Korkusuz, Y; Erbelding, C; Kohlhase, K; Luboldt, W; Happel, C; Grünwald, F
To determine the safety and efficacy of bipolar radiofrequency ablation (RFA) in benign thyroid nodules. 23 patients with 24 symptomatic benign thyroid nodules (21 regressive, 3 adenomas) ranging in volume from 0.5 to 112 ml (mean ± sd: 18 ± 24.4 ml) underwent bipolar RFA. Pain during the procedure was measured on a 10-point scale. Side-effects revealed by ultrasound or patients' complaints were documented. Periablative efficacy was measured 24 hours after RFA as change (Δ) in serum thyreoglobulin (Tg) and sonographic criteria (echogenity, Doppler blood flow and elasticity) categorized on a 3-point scale (echogenity, Doppler blood flow) or 4-point scale (elasticity). Efficacy in the 3 autonomous adenomas was measured as normalization of (99 m)Tc-pertechnate scintigraphy. Bipolar RFA was well tolerated by all patients with a median pain score of 3 ± 1.5 (range: 1 - 7). Side-effects were hematomas in 4 of 23 patients (17 %). Bipolar RFA resulted in a significant (p < 0.01) decrease in echogenity, blood flow, elasticity (Δ = 1 ± 0.28, 1 ± 0.46 and 1 ± 0.85 points, respectively), a median increase in Tg of 403 ± 2568 ng/ml as well as in a normalization of scintigraphy. Bipolar RFA is a safe and effective treatment option for symptomatic benign thyroid nodules. • Bipolar RFA is a safe and effective treatment for benign thyroid nodules.• Ultrasound imaging allows guidance during bipolar radiofrequency ablation.• (99 m)Tc-pertechnetate is able to detect the ablation area of autonomous adenomas. Citation Format: • Korkusuz Y, Erbelding C, Kohlhase K et al. Bipolar Radiofrequency Ablation of Benign Symptomatic Thyroid Nodules: Initial experience with Bipolar Radiofrequency. Fortschr Röntgenstr 2016; 188: 671 - 675. © Georg Thieme Verlag KG Stuttgart · New York.
Bernardi, S; Stacul, F; Zecchin, M; Dobrinja, C; Zanconati, F; Fabris, B
Benign thyroid nodules are an extremely common occurrence. Radiofrequency ablation (RFA) is gaining ground as an effective technique for their treatment, in case they become symptomatic. Here we review what are the current indications to RFA, its outcomes in terms of efficacy, tolerability, and cost, and also how it compares to the other conventional and experimental treatment modalities for benign thyroid nodules. Moreover, we will also address the issue of treating with this technique patients with cardiac pacemakers (PM) or implantable cardioverter-defibrillators (ICD), as it is a rather frequent occurrence that has never been addressed in detail in the literature.
Shahrzad, Mohammad Karim
Thermal ablation therapies for benign thyroid nodules have been introduced in recent years to avoid the complications of traditional methods such as surgery. Despite the little complications and the reportedly acceptable efficacy of thermal ablation methods, quite few medical centers have sought the potential benefits of employing them. This paper provides an introduction to the literature, principles and advances of Percutaneous Laser Ablation therapy of thyroid benign nodules, as well as a discussion on its efficacy, complications and future. Several clinical research papers evaluating the thermal effect of laser on the alleviation of thyroid nodules have been reviewed to illuminate the important points. The results of this research can help researchers to advance the approach and medical centers to decide on investing in these novel therapies. PMID:26705459
Shahrzad, Mohammad Karim
Thermal ablation therapies for benign thyroid nodules have been introduced in recent years to avoid the complications of traditional methods such as surgery. Despite the little complications and the reportedly acceptable efficacy of thermal ablation methods, quite few medical centers have sought the potential benefits of employing them. This paper provides an introduction to the literature, principles and advances of Percutaneous Laser Ablation therapy of thyroid benign nodules, as well as a discussion on its efficacy, complications and future. Several clinical research papers evaluating the thermal effect of laser on the alleviation of thyroid nodules have been reviewed to illuminate the important points. The results of this research can help researchers to advance the approach and medical centers to decide on investing in these novel therapies.
Prete, F; Di Ciaula, G; Sammarco, D; Parlati, C
On the basis of their experience acquired in the field of thyroid surgery the authors examine the problems related to extracapsular lobectomy from a tactical and technical point of view, starting with its principal indications: benign monolobar thyroid disease in a single or multiple nodular form. The validity of extemporary histological tests is also assessed on the basis of their experience of rare false negatives and the relative successive totalization programme. Lastly, the paper underlines the fundamental identification of the recurrent nerve as the central point of the operation, before which the authors emphasize that nothing should be cut or ligated apart from the superior vascular peduncle and vena media.
Nou, Eric; Kwong, Norra; Alexander, Lukas K.; Cibas, Edmund S.; Marqusee, Ellen
Introduction: The optimal timing for repeat evaluation of a cytologically benign thyroid nodule greater than 1 cm is uncertain. Arguably, the most important determinant is the disease-specific mortality resulting from an undetected thyroid cancer. Presently there exist no data that evaluate this important end point. Methods: We studied the long-term status of all patients evaluated in our thyroid nodule clinic between 1995 and 2003 with initially benign fine-needle aspiration (FNA) cytology. The follow-up interval was defined from the time of the initial benign FNA to any one of the following factors: thyroidectomy, death, or the most recent clinic visit documented anywhere in our health care system. We sought to determine the optimal timing for repeat assessment based on the identification of falsely benign malignancy and, most important, disease-related mortality due to a missed diagnosis. Results: One thousand three hundred sixty-nine patients with 2010 cytologically benign nodules were followed up for an average of 8.5 years (range 0.25–18 y). Thirty deaths were documented, although zero were attributed to thyroid cancer. Eighteen false-negative thyroid malignancies were identified and removed at a mean 4.5 years (range 0.3–10 y) after the initial benign aspiration. None had distant metastasis, and all are alive presently at an average of 11 years after the initial falsely benign FNA. Separate analysis demonstrates that patients with initially benign nodules who subsequently sought thyroidectomy for compressive symptoms did so an average of 4.5 years later. Conclusions: An initially benign FNA confers negligable mortality risk during long-term follow-up despite a low risk of identifying several such nodules as thyroid cancer. Because such malignancies appear adequately treated despite detection at a mean 4.5 years after falsely benign cytology, these data support a recommendation for repeat thyroid nodule evaluation 2–4 years after the initial benign FNA
el-Desouki, M. )
To evaluate the value of Tl-201 thyroid imaging in differentiating benign from malignant thyroid nodules, 58 patients with histologically proven thyroid masses were studied. The nature of the thyroid tumor was initially assessed by Tc-99m scans. Early and delayed Tl-201 thyroid imaging were performed in all patients, and thallium uptake and clearance in the cold nodules were assessed visually. Of the 20 patients with histologically proven malignant nodules, 19 showed increased Tl-201 activity in both the early and delayed images, indicating a sensitivity of 95%. On the other hand, 35 out of the 38 patients with benign nodules showed no increased thallium activity in the nodules on the delayed images, indicating a specificity of 92%. When early thallium images were analyzed separately, the sensitivity was 100% but the specificity was only 37%. By combining early and delayed Tl-201 images, differentiation between benign and malignant cold nodules is feasible. False-positive and false-negative cases will be discussed.
In, Hyun Sin; Kim, Dong Wook; Choo, Hye Jung; Jung, Soo Jin; Kang, Taewoo; Ryu, Ji Hwa
No study has so far investigated the relationship between aspirate color or degree of aspiration on the success of ethanol ablation (EA) of cystic thyroid nodules. We aimed to evaluate the efficacy of EA of benign cystic thyroid nodules and assess the relevant factors influencing the outcome. Over a 2-year period, 64 benign cystic thyroid nodules in 62 patients were treated with EA. Several factors related to EA efficacy were evaluated, including the cystic component volume, volume and color of aspirates, degree of aspiration, and volume of injected ethanol. In all cases, we performed ultrasound follow-up for at least 12 months after the last EA session to evaluate the collapsed cystic component. The 64 treated nodules had aspirate colors that were red bloody (n = 3), dark bloody (n = 31), brownish (n = 15), greenish-yellow (n = 13), and colorless (n = 2). The degrees of aspiration were scant (n = 8), mild (n = 3), moderate (n = 8), and complete (n = 45). There was successful collapse of the cystic component after initial EA in 52 cases, but a repeat EA was employed in 12 failed cases. Statistical analysis showed that the degree of aspiration and color of aspirates correlated significantly with the success of EA. The results of this study suggest that complete aspiration of cystic contents was the most important factor in the efficacy of EA of benign cystic thyroid nodules, and greenish-yellow contents were closely related to scant or mild aspiration.
van Ginhoven, T M; Massolt, E T; Bijdevaate, D C; Peeters, R P; Burgers, J W A; Moelker, A
Radiofrequency ablation (RFA) enables the ablation of selected tissue by means of heat. For the first time in the Netherlands, RFA is being used to treat patients with benign thyroid nodules. RFA is able to reduce the volume of a nodule that may be causing cosmetic complaints or problems due to mass effect. This avoids the need for surgery or treatment with radioactive iodine in this benign condition. The average reduction in size is 80% in the first year, leading to a considerable decrease in both symptomatic and cosmetic complaints. At Erasmus Medical Centre, Rotterdam, the Netherlands, this technique has been introduced in accordance with current guidelines, and it is expected that other centres of excellence will follow in implementing it. It is important that the initial experiences with this technique in the Netherlands in terms of effectiveness, risks and patient satisfaction should be monitored before RFA becomes routine treatment.
Ko, M-S; Jeong, K S; Shong, Y K; Gong, G Y; Baek, J H; Lee, J H
The US features of benign and malignant nodules overlap, and benign thyroid lesions can mimic thyroid malignancy on US. Benign cystic nodules after spontaneous collapse or needle aspiration, can mimic malignant thyroid nodules. Our aim was to evaluate the US features of CBCNs of the thyroid that distinguish such nodules from malignant thyroid nodules. US and clinical findings in 13 patients, each with a single CBCN, were evaluated to determine if they showed >50% cystic content on initial US or CT and >30% decrease in maximum diameter on follow-up US. We compared these findings with those of 26 patients, each with a single surgically confirmed PTMC. US scans were analyzed for internal content, shape, margin, echogenicity, presence of echogenic dots suggesting micro- and macrocalcification, inner isoechoic rim, and low-echoic halo. Six of the 13 (46%) CBCNs were classified as malignant on US due to their marked hypoechogenicity, microcalcification, or spiculated margins. US features that differed between CBCNs and PTMCs were shape (ovoid-to-round versus taller-than-wide, P = .016); margins (ill-defined versus spiculated, P < .000); low-echoic halo (P < .000); inner isoechoic rim (P < .000) with high negative predictive values (100%, 91%, 91%, and 89%, respectively); and clinically acceptable diagnostic accuracy (59%, 80%, 82%, and 85%, respectively). US features helpful for differential diagnosis of CBCNs from PTMCs include shape, margin, and the presence of an inner isoechoic rim and a low-echoic halo. Familiarity with US features suggesting CBCNs may be helpful in reducing unnecessary repeated FNABs.
Na, Dong Gyu; Lee, Jeong Hyun; Jung, So Lyung; Kim, Ji-hoon; Sung, Jin Yong; Shin, Jung Hee; Kim, Eun-Kyung; Lee, Joon Hyung; Kim, Dong Wook; Park, Jeong Seon; Kim, Kyu Sun; Baek, Seon Mi; Lee, Younghen; Chong, Semin; Sim, Jung Suk; Huh, Jung Yin; Bae, Jae-Ik; Kim, Kyung Tae; Han, Song Yee; Bae, Min Young; Kim, Yoon Suk
Thermal ablation using radiofrequency is a new, minimally invasive modality employed as an alternative to surgery in patients with benign thyroid nodules and recurrent thyroid cancers. The Task Force Committee of the Korean Society of Thyroid Radiology has developed recommendations for the optimal use of radiofrequency ablation for thyroid nodules. These recommendations are based on a comprehensive analysis of the current literature, the results of multicenter studies, and expert consensus. PMID:22438678
Makaridze, T; Mardaleishvili, K
The aim of the study is to establish the role of endocrine disturbances in development of malignant tumors in patients with thyroid gland and reproductive system pathology. We studied 207 patients with synchronic and metachronic development of thyroid gland and reproductive system benign tumors. The patients' average age was 35-58 years. According to study the following aspects were determined: clinical and hormonal aspect of thyroid gland and reproductive system benign tumor disease coincidence, analyses of thyroid gland and reproductive system pre-cancer disease pathogenesis, neuroendocrine relations-like increased thyrotrophic hormone secretion causes strengthening of prolactin secretion, which depresses luteinizing hormone release and increases production of follicular stimulating hormone. It has been proved that fibromyomas absolute hyperestrogenemia which develops during hypersecretion of follicular stimulating hormone (FSH) plays a role in etiology of uterine Gonadoliberin hypersecretion, especially follicular stimulating hormone FSH and corpus luteum deficiency is very important in development of ovarian pre-cancer and cancer diseases.
Zosin, Ioana; Balaş, Melania
The reported prevalence of chronic autoimmune thyroiditis associated with differentiated thyroid cancer (DTC) is heterogeneous.The aim of this study was to evaluate some epidemiological, clinical, sonographical and histological features of operated thyroidnodules with background diffuse autoimmune thyroiditis. The study included 411 cases with Hashimoto's thyroiditis (HT), of which 118 presented thyroid nodular disease(TND). Thyroidectomy was performed in 76 cases. Of these patients, 24 presented histologically confirmed DTC and 52 benign lesions.DTC types were as follows: papillary thyroid cancer (PTC) (n = 6), follicular variant of PTC (FVPTC) (n = 6), papillary microcarcinomas(n = 8), follicular thyroid carcinoma (n = 1) and the mixed form (classic PTC and FVPTC) (n = 3). The benign nodules were dominatedby: follicular adenoma (48%), and colloid goitre (40.3%). The sonographic features with predictive risk for malignancy in cases with HT associated with TND were represented by: solidcomposition, hypoechogenicity and microcalcifications. The characters of margins, the nodular shape and the type of vascularity do notseem to be as useful for identification of malignant nodules in HT. Fine needle-aspiration biopsy (FNAB) showed in DTC cases differentcytological smears: malignant (ten), indeterminate (eight), benign (two), and non-diagnostic (four). In the group of benign nodules, theindeterminate smears represented also a significant percentage (n = 12). The incidence of TND associated with HT was 28.7%. Among 76 operated cases, 31.5% presented DTC. The accuracyof FNAB in the preoperative diagnosis showed higher sensitivity (90.0%) and specificity (61.5%) compared to sonographic criteria.
Intenzo, Charles M; Dam, Hung Q; Manzone, Timothy A; Kim, Sung M
The thyroid gland was one of the first organs imaged in nuclear medicine, beginning in the 1940s. Thyroid scintigraphy is based on a specific phase or prelude to thyroid hormone synthesis, namely trapping of iodide or iodide analogues (ie, Tc99m pertechnetate), and in the case of radioactive iodine, eventual incorporation into thyroid hormone synthesis within the thyroid follicle. Moreover, thyroid scintigraphy is a reflection of the functional state of the gland, as well as the physiological state of any structure (ie, nodule) within the gland. Scintigraphy, therefore, provides information that anatomical imaging (ie, ultrasound, computed tomography [CT], magnetic resonance imaging) lacks. Thyroid scintigraphy plays an essential role in the management of patients with benign or malignant thyroid disease. In the former, the structure or architecture of the gland is best demonstrated by anatomical or cross-sectional imaging, such as ultrasound, CT, or even magnetic resonance imaging. The role of scintigraphy, however, is to display the functional state of the thyroid gland or that of a clinically palpable nodule within the gland. Such information is most useful in (1) patients with thyrotoxicosis, and (2) those patients whose thyroid nodules would not require tissue sampling if their nodules are hyperfunctioning. In neoplastic thyroid disease, thyroid scintigraphy is often standard of care for postthyroidectomy remnant evaluation and in subsequent thyroid cancer surveillance. Planar radioiodine imaging, in the form of the whole-body scan (WBS) and posttherapy scan (PTS), is a fundamental tool in differentiated thyroid cancer management. Continued controversy remains over the utility of WBS in a variety of patient risk groups and clinical scenarios. Proponents on both sides of the arguments compare WBS with PTS, thyroglobulin, and other imaging modalities with differing results. The paucity of large, randomized, prospective studies results in dependence on consensus
Colakoglu, Bulent; Yildirim, Duzgun; Alis, Deniz; Ucar, Gokhan; Samanci, Cesur; Ustabasioglu, Fethi Emre; Bakir, Alev; Ulusoy, Onur Levent
Aim: The aim of this study is to test the diagnostic success of strain elastography in distinguishing benign from malignant thyroid nodules. Materials and Methods: The size, echogenicity, and halo integrity of 293 thyroid nodules and the presence of microcalcification in these nodules were evaluated on gray-scale examination. Doppler characteristics and elastography patterns were also evaluated and recorded. Nodules were classified in four categories (patterns 1–4) based on elastographic examination. Results: According to the cytopathological findings, 222 nodules were benign, and 71 nodules were malignant. The risk of a nodule to be malignant was 3.8 times increased by hypoechogenicity, 7.7 times increased by the presence of microcalcification, and 11.5 times increased by the absence of halo. On Doppler patterns, the presence of central vascularity increased the malignancy risk of a nodule by 5.8 times. According to the receiver operating characteristic analysis, patterns 3 and 4 were malignant, and patterns 1 and 2 were benign. The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of elastography were 100%, 80.2%, 61.7%, 100%, and 85%, respectively. Conclusion: Strain elastography can be used as a noninvasive method in distinguishing benign from malignant thyroid nodules and in identifying the patients who would undergo surgery. PMID:28123841
Brandao, Mariana; Iwakura, Ricardo; Basilio, Fagne; Haleplian, Kaique; Ito, Amando; de Freitas, Luiz Carlos Conti; Bachmann, Luciano
Fine-needle aspiration cytology is the standard technique to diagnose thyroid pathologies. However, this method results in a high percentage of inconclusive and false negatives. The use of time-resolved fluorescence techniques to detect biochemical composition and tissue structure alterations could help to develop a portable, minimally invasive, and nondestructive method to assist during surgical procedures. This study aimed to use fluorescence lifetimes to differentiate healthy and benign tissues from malignant thyroid tissue. The thyroid tissue was excited at 298-300 nm and the fluorescence decay registered at 340 and 450 nm. We observed fluorescence lifetimes at 340 nm emission of 0.80±0.26 and 3.94±0.47 ns for healthy tissue; 0.90±0.24 and 4.05±0.46 ns for benign lesions; and 1.21±0.14 and 4.63±0.25 ns for malignant lesions. For 450 nm emissions, we obtain lifetimes of 0.25±0.18 and 3.99±0.39 ns for healthy tissue, 0.24±0.17 and 4.20±0.48 ns for benign lesions, 0.33±0.32 and 4.55±0.55 ns for malignant lesions. Employing analysis of variance, we differentiate malignant lesions from benign and healthy tissues. In addition, we use quadratic discriminant analysis to distinguish malignant from benign and healthy tissues with an accuracy of 76.1%, sensitivity of 74.7%, and specificity of 83.3%. These results indicate that time-resolved fluorescence can assist medical evaluation of thyroid pathologies during surgeries.
Brandao, Mariana; Iwakura, Ricardo; Basilio, Fagne; Haleplian, Kaique; Ito, Amando; de Freitas, Luiz Carlos Conti; Bachmann, Luciano
Fine-needle aspiration cytology is the standard technique to diagnose thyroid pathologies. However, this method results in a high percentage of inconclusive and false negatives. The use of time-resolved fluorescence techniques to detect biochemical composition and tissue structure alterations could help to develop a portable, minimally invasive, and nondestructive method to assist during surgical procedures. This study aimed to use fluorescence lifetimes to differentiate healthy and benign tissues from malignant thyroid tissue. The thyroid tissue was excited at 298-300 nm and the fluorescence decay registered at 340 and 450 nm. We observed fluorescence lifetimes at 340 nm emission of 0.80 ± 0.26 and 3.94 ± 0.47 ns for healthy tissue; 0.90 ± 0.24 and 4.05 ± 0.46 ns for benign lesions; and 1.21 ± 0.14 and 4.63 ± 0.25 ns for malignant lesions. For 450 nm emissions, we obtain lifetimes of 0.25 ± 0.18 and 3.99 ± 0.39 ns and for healthy tissue, 0.24 ± 0.17 and 4.20 ± 0.48 ns for benign lesions, 0.33 ± 0.32 and 4.55 ± 0.55 ns for malignant lesions. Employing analysis of variance, we differentiate malignant lesions from benign and healthy tissues. In addition, we use quadratic discriminant analysis to distinguish malignant from benign and healthy tissues with an accuracy of 76.1%, sensitivity of 74.7%, and specificity of 83.3%. These results indicate that time-resolved fluorescence can assist medical evaluation of thyroid pathologies during surgeries.
Liu, Yan; Cope, Leslie; Sun, Wenyue; Wang, Yongchun; Prasad, Nijaguna; Sangenario, Lauren; Talbot, Kristen; Somervell, Helina; Westra, William; Bishop, Justin; Califano, Joseph; Zeiger, Martha
Context: Fine-needle aspiration (FNA) is the best diagnostic tool for preoperative evaluation of thyroid nodules but is often inconclusive as a guide for surgical management. Objective: Our hypothesis was that thyroid tumor subtypes may show characteristic DNA copy number variation (CNV) patterns, which may further improve the preoperative classification. Design: Our study cohorts included benign follicular adenomas (FAs), classic papillary thyroid carcinomas (PTCs), and follicular variant PTCs (FVPTCs), the three subtypes most commonly associated with inconclusive preoperative cytopathology. Setting: Tissue and FNA samples were obtained at an academic tertiary referral center. Patients: Cases were identified that underwent partial or complete thyroidectomy for malignant or indeterminate thyroid lesions between 2000 and 2008 and had adequate snap-frozen tissue. Interventions: Pairs of tumor tissue and matching normal thyroid tissue-derived DNA were compared using 550K single-nucleotide polymorphism arrays. Main Outcome Measure: Statistically significant differences in CNV patterns between tumor subtypes were identified. Results: Segmental amplifications in chromosomes (Ch) 7 and 12 were more common in FAs than in PTCs or FVPTCs. Additionally, a subset of FAs and FVPTCs showed deletions in Ch22. We identified the 5 CNV-associated genes best at discriminating between FAs and PTCs/FVPTCs, which correctly classified 90% of cases. These 5 Ch12 genes were validated by quantitative genomic PCR and gene expression array analyses on the same patient cohort. The 5-gene signature was then successfully validated against an independent test cohort of benign and malignant tumor samples. Finally, we performed a feasibility study on matched FA-derived intraoperative FNA samples and were able to correctly identify FAs harboring the Ch12 amplification signature, whereas FAs without amplification showed a normal Ch12 signature. Conclusions: Thyroid tumor subtypes possess
Shin, J H; Jung, S L; Baek, J H; Kim, J-H
Rupture of benign thyroid tumors after RFA is very rare. We experienced 6 cases in 4 institutions. All patients presented with abrupt neck swelling and pain between 9 and 60 days after RFA. Imaging and clinical findings of the ruptured tumors were anterior subcapsular location, mixed composition, large size, and repeated ablations. Conservative treatment was sufficient in 3 cases, whereas surgical management was required in 3.
Askitis, D.; Efremidou, E. I.; Karanikas, M.; Mitrakas, A.; Tripsianis, G.; Polychronidis, A.; Liratzopoulos, N.
Objective. Currently, total thyroidectomy (TT) is widely used to treat benign thyroid diseases and thyroid carcinoma. The differential diagnosis between benign and malignant thyroid disorders and the potential identification of thyroid microcarcinomas with biochemical markers remain controversial. This retrospective study aimed to estimate the prognostic validity of thyroid autoantibodies, thyroglobulin (Tg), and the thyroid disease type in diagnostic approaches regarding the co-existence of incidental thyroid carcinoma (ITC) with benign thyroid diseases. Methods. A cohort of 228 patients was treated with TT for benign thyroid disorders between 2005 and 2010. Thyroid autoantibodies and Tg were preoperatively estimated. Patients were classified according to the preoperative and histologically established diagnoses, and the median values of the biochemical markers were compared between the groups. Results. ITC was detected in 33/228 patients and almost exclusively in the presence of nontoxic thyroid disorders (P = 0.014). There were no statistically significant differences in the median values of the biochemical markers between the benign and malignant groups. There was also no significant association between ITC and chronic lymphocytic thyroiditis. Conclusions. The co-existence of ITC with benign and especially nontoxic thyroid diseases is significant, and treatment of these disorders with TT when indicated can lead to the identification and definitive cure of microcarcinomas. Further studies are required to establish precise markers with prognostic validity for TC diagnosis. PMID:24348554
Reverter, Jordi L.; Fajardo, Carmen; Resmini, Eugenia; Salinas, Isabel; Mora, Mireia; Llatjós, Mariona; Sesmilo, Gemma; Rius, Ferran; Halperin, Irene; Webb, Susan M.; Ricart, Veronica; Riesgo, Pedro; Mauricio, Dídac; Puig-Domingo, Manel
Data on the prevalence of benign and malignant nodular thyroid disease in patients with acromegaly is a matter of debate. In the last decade an increasing incidence of thyroid cancer has been reported. The aim of this study was to evaluate the prevalence of goiter, thyroid nodules and thyroid cancer in a large series of patients with acromegaly with a cross-sectional study with a control group. Six Spanish university hospitals participated. One hundred and twenty three patients (50% men; mean age 59±13 years; disease duration 6.7±7.2 years) and 50 controls (51% males, mean age 58±15 years) were studied. All participants underwent thyroid ultrasound and fine needle aspiration. Cytological analysis was performed in suspicious nodules between 0.5 and 1.0 cm and in all nodules greater than 1.0 cm. Goiter was more frequently found in patients than in controls (24.9 vs. 8.3%, respectively; p<0.001). Nodular thyroid disease as well as nodules greater than 1 cm were also more prevalent in acromegalic patients (64.6%, vs. 28.6%, p<0.05 and 53.3 vs. 28.6%, respectively; p<0.05), and all underwent fine needle aspiration. Suspicious cytology was detected in 4 patients and in none of the controls. After thyroidectomy, papillary thyroid carcinoma was confirmed in two cases (3.3% of patients with thyroid nodules), representing 1.6% of the entire group of patients with acromegaly (2.4% including a case with previously diagnosed papillary thyroid carcinoma). These data indicated that thyroid nodular disease and cancer are increased in acromegaly, thus justifying its routine ultrasound screening. PMID:25127456
Reverter, Jordi L; Fajardo, Carmen; Resmini, Eugenia; Salinas, Isabel; Mora, Mireia; Llatjós, Mariona; Sesmilo, Gemma; Rius, Ferran; Halperin, Irene; Webb, Susan M; Ricart, Veronica; Riesgo, Pedro; Mauricio, Dídac; Puig-Domingo, Manel
Data on the prevalence of benign and malignant nodular thyroid disease in patients with acromegaly is a matter of debate. In the last decade an increasing incidence of thyroid cancer has been reported. The aim of this study was to evaluate the prevalence of goiter, thyroid nodules and thyroid cancer in a large series of patients with acromegaly with a cross-sectional study with a control group. Six Spanish university hospitals participated. One hundred and twenty three patients (50% men; mean age 59±13 years; disease duration 6.7±7.2 years) and 50 controls (51% males, mean age 58±15 years) were studied. All participants underwent thyroid ultrasound and fine needle aspiration. Cytological analysis was performed in suspicious nodules between 0.5 and 1.0 cm and in all nodules greater than 1.0 cm. Goiter was more frequently found in patients than in controls (24.9 vs. 8.3%, respectively; p<0.001). Nodular thyroid disease as well as nodules greater than 1 cm were also more prevalent in acromegalic patients (64.6%, vs. 28.6%, p<0.05 and 53.3 vs. 28.6%, respectively; p<0.05), and all underwent fine needle aspiration. Suspicious cytology was detected in 4 patients and in none of the controls. After thyroidectomy, papillary thyroid carcinoma was confirmed in two cases (3.3% of patients with thyroid nodules), representing 1.6% of the entire group of patients with acromegaly (2.4% including a case with previously diagnosed papillary thyroid carcinoma). These data indicated that thyroid nodular disease and cancer are increased in acromegaly, thus justifying its routine ultrasound screening.
Provatopoulou, Xeni; Georgiadou, Despoina; Sergentanis, Theodoros N; Kalogera, Eleni; Spyridakis, John; Gounaris, Antonia; Zografos, George N
Thyroid disorders, including thyroid cancer and autoimmune thyroid diseases, have been closely associated with inflammation. This study aims to investigate the role of inflammation in thyroid disease by assessing serum cytokine levels in patients with malignant and benign thyroid conditions. Serum levels of ten interleukins (IL-1β, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-10, IL-12 and IL-13) were quantitatively determined in 20 patients with thyroid cancer, 38 patients with benign thyroid disease and 50 healthy controls by multiplex technology. Serum IL-1β, IL-2, IL-4, IL-5 and IL-6 levels were strongly associated with each other. IL-10 and IL-12 correlated with IL-1β, IL-5, IL-6, and with each other. Age was inversely correlated with serum levels of IL-2, IL-4 and IL-13. A positive correlation between T3 and IL-13 levels was also observed. Significantly higher levels of IL-6, IL-7, IL-10 and IL-13, as well as significantly lower levels of IL-8 were observed in patients with benign and malignant thyroid disease compared to controls. The combination of IL-13 and IL-8 in a two-marker panel was highly efficient in discriminating thyroid disorders (AUC 0.90). Malignant and benign thyroid conditions are associated with altered expression levels of interleukins, supporting the association between thyroid disease and underlying inflammatory processes.
Purpose: The aim of this study was to evaluate the efficacy of radiofrequency (RF) ablation for benign thyroid nodules and assess the usefulness of internal factors (ultrasonographic findings) and external factors (treatment-related findings) in prediction of treatment efficacy. Methods: We evaluated 22 benign thyroid nodules from 19 patients treated with RF ablation between March 2010 and January 2013. The internal and external factors of these nodules were retrospectively reviewed and correlated with the therapeutic success and the volume reduction ratio (VRR). The volume and size of the nodules were determined before treatment, and the VRR was calculated at 6-month and 1-year follow-up examinations after RF ablation. Therapeutic success was defined as a >50% volume reduction. Results: The mean VRRs were 66.1±18.7% at 6 months and 74.3±16.7% at 1 year. The therapeutic success rate after 6 months and 1 year was 81.8% and 90.9%, respectively. At the 1-year follow-up, the margin of the nodule correlated with therapeutic success. Most of the successfully ablated nodules showed well-defined margins on initial ultrasonography (18/20, 90%) (P=0.026). In addition, nodules with ill-defined margins showed a tendency toward having a low VRR at the 6-month and 1-year follow-up examinations. Conclusion: RF ablation was effective in decreasing the volume of benign thyroid nodules. Thyroid nodules with well-defined margins tended to show successful outcomes at the 1-year follow-up examination after RF ablation. PMID:27101983
Krejbjerg, Anne; Brilli, Lucia; Pikelis, Arunas; Pedersen, Henrik Baymler; Laurberg, Peter
The purpose of this study was to evaluate the characteristics of benign thyroid nodules on sonography and ultrasound elastography in a population exposed to iodine deficiency. We conducted a prospective systematic evaluation of preoperative thyroid sonography and elastography in patients assigned for surgical excision of benign thyroid nodules. Two experienced sonographers performed all sonographic and elastographic examinations. Thyroid nodules were evaluated by 7 generally accepted sonographic malignancy risk markers and assigned an elasticity score on elastography. The final diagnosis of a benign thyroid nodule was based on histopathologic analysis of resected thyroid gland tissue. We evaluated 232 thyroid nodules in 105 patients (86 women and 19 men). In total, 57% of the examined nodules had 1 or 2 malignancy risk markers present, and 24% did not have any markers present. A solid nodule larger than 15 mm was the most common malignancy risk marker observed (63%), followed by low elasticity (33%), microcalcifications (26%), and hypoechogenicity (15%). In an analysis stratified according to the number of nodules (solitary versus multiple), low elasticity was described more frequently in solitary nodules (61.9% versus 30.4%; P= .004). A large nodular volume was a predictor (P < .05) of microcalcifications and intranodular vascularization, whereas an absent halo sign and a solid nodule were found less frequently in nodules with larger volumes. Our results show that routine preoperative malignancy risk evaluation of presumably benign thyroid nodules is of little value when performed on patients exposed to iodine deficiency. © 2015 by the American Institute of Ultrasound in Medicine.
M, Coskun; A, Aydogan; C, Gokce; O, Ilhan; Ov, Ozkan; H, Gokce; H, Oksuz
We are reporting an irreversible Horner Syndrome (HS) in a patient with benign thyroid gland nodule in which thyroidectomy was performed for treatment. A 37-year-old female was admitted to our clinic with a swelling in the left lobe of the thyroid gland and ptosis at the left eyelid. The clinical diagnosis of HS was confirmed pharmacologically by aproclonidine. Histopathologic examination of thyroidectomy specimen was reported as benign nodule. To the best of our knowledge, this is a very rare report in terms of thyroid benign nodule associated with irreversible HS due to cervical sympathetic chain compression.
M, Coskun; A, Aydogan; C, Gokce; O, Ilhan; OV, Ozkan; H, Gokce; H, Oksuz
We are reporting an irreversible Horner Syndrome (HS) in a patient with benign thyroid gland nodule in which thyroidectomy was performed for treatment. A 37-year-old female was admitted to our clinic with a swelling in the left lobe of the thyroid gland and ptosis at the left eyelid. The clinical diagnosis of HS was confirmed pharmacologically by aproclonidine. Histopathologic examination of thyroidectomy specimen was reported as benign nodule. To the best of our knowledge, this is a very rare report in terms of thyroid benign nodule associated with irreversible HS due to cervical sympathetic chain compression. PMID:24353546
Dilli, Alper; Ayaz, Umit Yasar; Cakir, Evrim; Cakal, Erman; Gultekin, Salih Sinan; Hekimoglu, Baki
To evaluate the efficacy of apparent diffusion coefficient (ADC) calculation in differentiation between malignant and benign thyroid nodules. A prospective study was conducted in 52 patients. Diffusion-weighted echoplanar imaging was performed and b factors were taken as 0 and 400 s/mm(2). The mean ADC value for malignant thyroid nodules was 0.829±0.179×10(-3) mm(2)/s and that for benign thyroid nodules was 1.984±0.482×10(-3) mm(2)/s. The mean ADC value for malignant nodules was significantly lower than that for benign nodules (P=.0001). ADC value calculation is an effective method in differentiation of malignant thyroid nodules from benign ones. Copyright © 2012 Elsevier Inc. All rights reserved.
Dietlein, Markus; Grünwald, Frank; Schmidt, Matthias; Schneider, Peter; Verburg, Frederik A; Luster, Markus
The version 5 of the guideline for radioiodine therapy of benign thyroid disorders is an update of the version 4, which was published by the German Society of Nuclear Medicine (Deutsche Gesellschaft für Nuklearmedizin, DGN) in co-ordination with the German Society of Endocrinology (Deutsche Gesellschaft für Endokrinologie, DGE, Sektion Schilddrüse) and the German Society of General- and Visceral-Surgery (Deutsche Gesellschaft für Allgemein- und Viszeralchirurgie, DGAV) in 2007. This guideline was harmonized with the recommendations of the European Association of Nuclear Medicine (EANM). According to the German "Directive on Radiation Protection in Medicine" the physician specialised in nuclear medicine ("Fachkunde in der Therapie mit offenen radioaktiven Stoffen") is responsible for the justfication to treat with radioiodine. Therefore, relevant medical indications for radioiodine therapy and alternative therapeutic options are discussed within the guideline. This procedure guideline is developed in the consensus of a representative expert group. This fulfils the level S1 (first step) within the German classification of Clinical Practice Guidelines.
Gimm, O; Perren, A; Weng, L P; Marsh, D J; Yeh, J J; Ziebold, U; Gil, E; Hinze, R; Delbridge, L; Lees, J A; Mutter, G L; Robinson, B G; Komminoth, P; Dralle, H; Eng, C
Germline mutations in PTEN (MMAC1/TEP1) are found in patients with Cowden syndrome, a familial cancer syndrome which is characterized by a high risk of breast and thyroid neoplasia. Although somatic intragenic PTEN mutations have rarely been found in benign and malignant sporadic thyroid tumors, loss of heterozygosity (LOH) has been reported in up to one fourth of follicular thyroid adenomas (FAs) and carcinomas. In this study, we examined PTEN expression in 139 sporadic nonmedullary thyroid tumors (55 FA, 27 follicular thyroid carcinomas, 35 papillary thyroid carcinomas, and 22 undifferentiated thyroid carcinomas) using immunohistochemistry and correlated this to the results of LOH studies. Normal follicular thyroid cells showed a strong to moderate nuclear or nuclear membrane signal although the cytoplasmic staining was less strong. In FAs the neoplastic nuclei had less intense PTEN staining, although the cytoplasmic PTEN-staining intensity did not differ significantly from that observed in normal follicular cells. In thyroid carcinomas as a group, nuclear PTEN immunostaining was mostly weak in comparison with normal thyroid follicular cells and FAs. The cytoplasmic staining was more intense than the nuclear staining in 35 to 49% of carcinomas, depending on the histological type. Among 81 informative tumors assessed for LOH, there seemed to be an associative trend between decreased nuclear and cytoplasmic staining and 10q23 LOH (P = 0.003, P = 0.008, respectively). These data support a role for PTEN in the pathogenesis of follicular thyroid tumors.
Gangappa, Rajashekara Babu; Chowdary, Prashanth Basappa; Patanki, Adithya Malolan; Ishwar, Mahalakshmi
Introduction Total thyroidectomy has been used to treat patients with malignant thyroid disease. But for patients with benign thyroid disease, the safety and efficacy of total thyroidectomy is a matter of debate. Subtotal thyroidectomy that was previously the treatment of choice for benign thyroid disease has been associated with high recurrence rates. The risk of permanent complications is greatly increased in patients who undergo surgery for recurrence of benign thyroid disease. Total thyroidectomy is an operation that can be safely performed, with low incidence of permanent complications, which allows one to broaden its indications in various benign thyroid diseases, thus avoiding future recurrences and reoperations. Aim To assess the benefits of total thyroidectomy for benign thyroid diseases. Materials and Methods This randomized prospective study was conducted between Feb 2013 and Nov 2014 in the Department of General Surgery at Bangalore Medical College and Research Institute. It included 116 patients undergoing total thyroidectomy procedure for benign thyroid disease. All cases were followed-up for a period of 6 months for incidence of RLN palsy, hypoparathyroidism, disease recurrence and number of incidental malignancies detected on postoperative histological analyses of the thyroid specimens. Results Most of the patients were in the third decade of their lives. The female to male ratio was 6.7:1. Total thyroidectomy was done for 116 benign thyroid diseases with multinodular goiter as the most common diagnosis. The incidence of postoperative hypocalcaemia was 16.37% (however, only 1 patient developed permanent hypocalcaemia) and that of wound infection was 2.58% and seroma formation was 2.58%. None of the patients included in this study had haematoma formation or RLN paralysis. An incidental malignancy was identified in 11.20% patients. Conclusion Total thyroidectomy shows benefits in eradicating multinodular goiter, alleviating Grave’s opthalmopathy
Surgical excision has traditionally been the treatment of choice for benign non-thyroid cystic neck masses, including lymphatic malformation, ranula, branchial cleft cyst, thyroglossal duct cyst, and parathyroid cyst. However, there is a tendency toward recurrence after surgery, and surgery may be accompanied by complications, including nerve injuries, vascular injuries, and scar formation. Ultrasound-guided sclerotherapy using various agents has been challenged and successfully applied as an alternative treatment for benign non-thyroid cystic neck masses. This report reviews the available sclerosing agents and describes the applications of sclerotherapy to the treatment of benign cystic masses in the neck. PMID:24936500
Feng, Xiaoxi; Milas, Mira; O'Malley, Margaret; LaGuardia, Lisa; Berber, Eren; Jin, Judy; Metzger, Rosemarie; Mitchell, Jamie; Shin, Joyce; Burke, Carol A; Kalady, Matthew; Church, James; Siperstein, Allan
Familial adenomatous polyposis (FAP) is a hereditary colon cancer syndrome that involves multiple extracolonic organs, including the thyroid. Several studies have estimated the rate of thyroid cancer in FAP to occur at five times the rate of the general population, but no current consensus defines screening for thyroid cancer in this cohort. This study seeks to define the features of benign and malignant thyroid disease in FAP patients, to compare thyroid cancer cases found through screening with those found incidentally, and to propose disease surveillance recommendations. Prospective screening for early thyroid cancer detection with thyroid ultrasound (US) was performed on FAP patients at the time of annual colonoscopy since November 2008. Clinical and US data were reviewed to characterize the observed thyroid nodules. Nonscreening-detected cases (NSD) were found through review of the colon cancer registry database. Eighteen NSD were found, compared with 15 screening-detected (SD) cases, out of 205 total patients screened (Mage=42 years; 55% female). The mean tumor size was larger in the NSD group than the SD group (p=0.04), and they tended to demonstrate more positive lymph nodes and more complications than the SD group. In the screened cohort, at least one thyroid nodule was detected in 106 (51.7%) patients, with 90% of these seen on initial exam. A total of 40/106 (37.7%) patients required fine-needle aspiration biopsy of a dominant nodule (Msize=14 mm), and 28/40 (70%) of these were performed at the first US visit. Suspicious US features were present in 16/40 (40%) patients, including five sub-centimeter nodules. Cytology and/or nodule US was abnormal in 15/205 screened patients, leading to surgery and revealing 14 papillary and one medullary thyroid cancer. Given the age and sex distribution of the screened cohort, this study reveals a higher-than-expected prevalence of both benign and malignant thyroid disease in the FAP population. Additionally, SD cases
Musholt, Thomas J; Clerici, Thomas; Dralle, Henning; Frilling, Andreja; Goretzki, Peter E; Hermann, Michael M; Kussmann, Jochen; Lorenz, Kerstin; Nies, Christoph; Schabram, Jochen; Schabram, Peter; Scheuba, Christian; Simon, Dietmar; Steinmüller, Thomas; Trupka, Arnold W; Wahl, Robert A; Zielke, Andreas; Bockisch, Andreas; Karges, Wolfram; Luster, Markus; Schmid, Kurt W
Benign thyroid disorders are among the most common diseases in Germany, affecting around 15 million people and leading to more than 100,000 thyroid surgeries per year. Since the first German guidelines for the surgical treatment of benign goiter were published in 1998, abundant new information has become available, significantly shifting surgical strategy towards more radical interventions. Additionally, minimally invasive techniques have been developed and gained wide usage. These circumstances demanded a revision of the guidelines. Based on a review of relevant recent guidelines from other groups and additional literature, unpublished data, and clinical experience, the German Association of Endocrine Surgeons formulated new recommendations on the surgical treatment of benign thyroid diseases. These guidelines were developed through a formal expert consensus process and in collaboration with the German societies of Nuclear Medicine, Endocrinology, Pathology, and Phoniatrics & Pedaudiology as well as two patient organizations. Consensus was achieved through several moderated conferences of surgical experts and representatives of the collaborating medical societies and patient organizations. The revised guidelines for the surgical treatment of benign thyroid diseases include recommendations regarding the preoperative assessment necessary to determine when surgery is indicated. Recommendations regarding the extent of resection, surgical techniques, and perioperative management are also given in order to optimize patient outcomes. Evidence-based recommendations for the surgical treatment of benign thyroid diseases have been created to aid the surgeon and to support optimal patient care, based on current knowledge. These recommendations comply with the Association of the Scientific Medical Societies in Germany requirements for S2k guidelines.
Moncayo, Roy; Moncayo, Helga
Background The aim of this study was to investigate the influence of a combined supplementation with magnesium, selenium and coenzyme Q10 on the morphology of the thyroid in patients with benign diseases. The clinical examination and treatment approach aims additionally at treating musculoskeletal and psychological stress. Methods A group of 8 patients (5 with hyperthyroidism, 3 with hypothyroidism) who initially attended a public institution received additional treatment at our private institution. The basic pharmacological treatment, i.e. substitution or thyreostatic, was kept unchanged. The inclusion of patients required good quality ultrasound images to be available. Results Initially the changes of the musculoskeletal system were corrected. Following this, stress components were also treated. After a period of 2–4 years of supplementation we observed a normalization of thyroid morphology as evidenced on ultrasound while at the same time there was a reduction of perfusion intensity. Thyroid antibody titers decreased in the majority of cases. Failure of the treatment was seen in 2 cases of chronic thyroiditis that was present for more than 10 years. The ultrasound images of these patients suggest a possible fibrosis. Conclusions In spite of the limitation due to the small number of cases, our observational study has delivered proof of concept for our examination and treatment model for benign thyroid disease. General significance Our results challenge validity of the prevailing dogma of a destructive unstoppable “autoimmune” destructive process of the gland. At the same time it shows new therapeutic options for patients with thyroid disease. PMID:26672672
Seo, Young Lan; Yoon, Dae Young; Yoon, Soo Jeong; Lim, Kyoung Ja; Yun, Eun Joo; Choi, Chul Soon; Bae, Sang Hoon
The purpose of this study was to assess the manual compressibility of thyroid masses with an ultrasound probe and to determine whether this ultrasound feature can be used to differentiate benign from malignant thyroid lesions. We prospectively compared images obtained during compression with an ultrasound probe and noncompressed ultrasound images of 180 pathologically proven thyroid masses (51 malignant, 129 benign) smaller than 2 cm in 169 patients (127 women, 42 men; mean age, 51.2 years). The size (anteroposterior and transverse dimensions) and shape (ratio of anteroposterior to transverse dimension) of the selected lesions were measured on both noncompressed and compressed ultrasound images at a computer workstation, and the compressibility (anteroposterior-to-transverse ratio on noncompressed images minus anteroposterior-to-transverse ratio on compressed images) was calculated. Compressibility was analyzed to determine its association with histopathologic results (benign versus malignant) and the characteristics of the thyroid mass (involved lobe, location in lobe, halo, and composition). The area under the receiver operating characteristic curve was used as an indicator of performance. The mean anteroposterior-to-transverse ratio of a thyroid mass on compressed ultrasound images was significantly lower than that on noncompressed images (0.78 ± 0.28 vs 0.92 ± 0.30; p < 0.001). The compressibility of masses was greater for benign than for malignant lesions (0.19 ± 0.16 vs 0.05 ± 0.12; p < 0.001). No statistically significant association was identified between compressibility and other characteristics of a lesion. The area under the receiver operating characteristic curve for compressibility of thyroid masses was 0.78. On the basis of a cutoff value for malignancy of compressibility less than 0.10, the sensitivity, specificity, and accuracy were 72.5%, 72.9%, and 72.8%. Compressibility with an ultrasound probe is a useful criterion for differentiating benign
Khatri, Pallavi; Choudhury, Monisha; Jain, Manjula; Thomas, Shaji
Context: Thyroid nodules represent a common problem, with an estimated prevalence of 4–7%. Although fine needle aspiration cytology (FNAC) has been accepted as a first line diagnostic test, the rate of false negative reports of malignancy is still high. Nuclear morphometry is the measurement of nuclear parameters by image analysis. Image analysis can merge the advantages of morphologic interpretation with those of quantitative data. Aims: To evaluate the nuclear morphometric parameters in fine needle aspirates of thyroid lesions and to study its role in differentiating benign from malignant thyroid lesions. Material and Methods: The study included 19 benign and 16 malignant thyroid lesions. Image analysis was performed on Giemsa-stained FNAC slides by Nikon NIS-Elements Advanced Research software (Version 4.00). Nuclear morphometric parameters analyzed included nuclear size, shape, texture, and density parameters. Statistical Analysis: Normally distributed continuous variables were compared using the unpaired t-test for two groups and analysis of variance was used for three or more groups. Tukey or Tamhane's T2 multiple comparison test was used to assess the differences between the individual groups. Categorical variables were analyzed using the chi square test. Results and Conclusion: Five out of the six nuclear size parameters as well as all the texture and density parameters studied were significant in distinguishing between benign and malignant thyroid lesions (P < 0.05). Cut-off values were derived to differentiate between benign and malignant cases. PMID:28182069
Tang, Xiaoyin; Cui, Dan; Chi, Jiachang; Wang, Zhi; Wang, Tao; Zhai, Bo; Li, Ping
Background: Radiofrequency ablation (RFA) is a relatively new procedure for treating benign thyroid nodules. The purpose of this study was to evaluate the safety and efficacy of RFA for treating benign thyroid nodules so as to serve as a reference for future clinical practice. Methods: This study retrospectively analyzed the clinical data of patients receiving percutaneous RFA for treating thyroid nodules from November 2014 to July 2015 in our medical center. One hundred and eight patients with a total of 380 nodules received ultrasound-guided RFA for treating thyroid nodules. Comparisons of the volume change of thyroid nodules before and after RFA treatment, post-treatment complication, and change of thyroid function, were carried out afterwards. Results: Before treatments, all patients received fine needle aspiration biopsy (FNA) which supported the diagnosis of benign tumor. There were 13 males and 95 females included in the study. Twenty-six cases (24.07%) had single nodule, and 82 cases (75.93%) had multiple nodules. Before treatments, the thyroid functions (FT3, FT4, and TSH) were normal originally or adjusted to normal range by endocrinology treatment. The preoperative nodules had minimum volume of 0.01mL, maximum volume of 70.89 mL, and mean volume of 1.02 ± 4.24mL. The volume of nodules one month and three months after RFA were 0.29 ± 0.72mL and 0.15 ± 0.87mL, respectively. In addition, volume reduction ratio (VRR) of nodules one month and three months after RFA were 64.12% and 85.54%, respectively. Both volume of nodules and VRR had statistically significant differences for pre-operative and post-operative comparison (P<0.05). Thyroid functions were in normal range after treatments, and there was no serious complications. Conclusions: Ultrasound-guided RFA treating benign thyroid nodules had the advantages of definite efficacy, safety, strong in control ability, no incision, less damage to surrounding normal tissues and no effect on thyroid function
Mamaev, N N; Grynyeva, E N; Blagosklonnaya, Y V
Aim—To evaluate the expression of ribosomal cistrons in human thyroid epithelial cells (TECs) of patients with Grave's disease, Hashimoto's thyroiditis and benign and malignant tumours of the thyroid gland. Methods—TEC nucleoli were investigated in fine needle biopsy specimens from 10 controls, 39 patients with Grave's disease, 15 with Hashimoto's thyroiditis, 56 with benign, and 15 with malignant tumours of the thyroid. A one step silver staining method was applied. In most cases serum concentrations of thyroxine and triiodothyronine as well as goitre size were determined. In every case 100 TECs were evaluated for the mean numbers of nucleoli and for the average number of argyrophilic nucleolar organiser regions (AgNORs) per nucleus. Results—NORs were activated in all patients, but not in controls. The numbers of AgNORs in patients with Grave's disease were closely correlated with thyroxine or triiodothyronine, or both, concentrations and with the size of the thyroid. In patients with Hashimoto's thyroiditis about 30% of TECs nucleoli did not contain AgNORs, whereas others were heavily impregnated with silver. Compared with controls and benign tumours, the nucleoli of carcinomatous TECs were larger and irregular in shape. The mean number of AgNORs per nucleus in malignant cells was higher than that in their benign counterparts. Conclusions—The mechanism by which NORs are activated in TECs varies depending on the type of lesion. The higher AgNOR score in TECs from malignant tumours can be used to distinguish them from their benign counterparts. Images PMID:16696083
Esfahanian, Fatemeh; Aryan, Arvin; Ghajarzadeh, Mahsa; Yazdi, Meisam Hosein; Nobakht, Nasir; Burchi, Mehdi
Background: Sonoelastography is a new ultrasound method which could be helpful to determine which thyroid nodule is malignant. We designed this study to evaluate the accuracy of sonoelastography in differentiating of benign and malignant thyroid nodules in Iranian patients. Methods: Forty thyroid nodules in forty consecutive patients who had been referred for sonography-guided fine-needle aspiration biopsy were evaluated. Gray scale ultrasound and elastosonography by real-time, freehand technique applied for all patients. Elastography findings were classified into four groups. Nodules which were classified as patterns 1 or 2 in elastogram evaluation were classified as benign and probably malignant if elastogram scans were patterns 3 and 4 of elastogram scan. Results: Mean age ± standard deviation (SD) was 42.2 ± 12.6 years, and mean ± SD thyroid-stimulating hormone level was 1.4 ± 1.9 IU/ml. Thirty-five cases (87.5%) were female and 5 (12.5%) were male. Histological examination indicated 27 (67.5%) benign and 13 (32.5%) malignant nodules. The most elastogram score was 2 (50%) followed by score 3. The cut-off point of 2 considered as the best value to differentiate benign and malignant thyroid nodules with sensitivity and specificity of 61% and 78% (area under the curve = 0.76, 95% confidence interval: 0.6–0.92, P = 0.007). Conclusions: Sonoelastography could help to differentiate benign and malignant thyroid nodules. As our sample size was limited, larger studies are recommended. PMID:27076893
Valentini, Raisa Bressan; Macedo, Bruno Mussoi de; Izquierdo, Rogério Friedrich; Meyer, Erika Laurini Souza
Even though it is a rare event, most associations of thyroid carcinoma with subacute thyroiditis described in the literature are related to its granulomatous form (Quervain's thyroiditis). We present a patient with subacute lymphocytic thyroiditis (painless thyroiditis) and papillary thyroid cancer that was first suspected in an initial ultrasound evaluation. A 30-year old female patient who was referred to the emergency room due to hyperthyroidism symptoms was diagnosed with painless thyroiditis established by physical examination and laboratory findings. With the presence of a palpable painless thyroid nodule an ultrasound was prescribed and the images revealed a suspicious thyroid nodule, microcalcification focus in the heterogeneous thyroid parenquima and cervical lymphadenopathy. Fine needle aspiration biopsy was taken from this nodule; cytology was assessed for compatibility with papillary thyroid carcinoma. Postsurgical pathology evaluation showed a multicentric papillary carcinoma and lymphocytic infiltration. Subacute thyroiditis, regardless of type, may produce transitory ultrasound changes that obscure the coexistence of papillary carcinoma. Due to this, initial thyroid ultrasound evaluation should be delayed until clinical recovery. We recommended a thyroid ultrasound exam for initial evaluation of painless thyroiditis, particularly in patients with palpable thyroid nodule. Further cytological examination is recommended in cases presenting with suspect thyroid nodule and/or non-nodular hypoechoic (> 1 cm) or heterogeneous areas with microcalcification focus.
Pandey, Niraj Nirmal; Pradhan, Gaurav Shanker; Manchanda, Alpana; Garg, Anju
The objective of this study was to evaluate the role of ultrasound elastography using acoustic radiation force impulse (ARFI) quantification in characterizing and differentiating malignant versus benign thyroid nodules. A total of 40 thyroid nodules were evaluated with conventional sonography and ultrasound elastography using ARFI quantification. The final diagnosis was obtained from histologic findings. A total of 14 malignant and 26 benign nodules were diagnosed on the basis of histologic examination. Majority of the malignant thyroid nodules demonstrated presence of intranodular vascular flow, hypoechoic echotexture, absent halo, irregular margins and microcalcifications. However, a considerable overlap was noted in the sonographic features of malignant and benign thyroid nodules. On ARFI quantification, the mean shear wave speed (SWS) values ( M ± SD) of malignant and benign thyroid nodules were 3.131 ± 0.921 m/s and 1.691 ± 0.513 m/s, respectively. A significant difference was observed between the mean SWS values of malignant thyroid nodules and benign thyroid nodules ( p < 0.0001). Applying a cutoff value of 2.53 m/s, the sensitivity, specificity, and the area under the receiver operating characteristic curve for the differentiation were 85.71%, 96.15%, and 0.922, respectively. ARFI quantification is a promising elastography technique that provides quantitative information about tissue stiffness. It provides additional information and complements sonography as an effective diagnostic tool in characterizing and differentiating benign from malignant thyroid nodules.
Zhu, Caisong; Liu, Wei; Yang, Jun; Yang, Jing; Shao, Kangwei; Yuan, Lixin; Chen, Hairong; Lu, Wei; Zhu, Ying
The aim of the present study was to compare the multidetector computed tomography (MDCT) features of benign and malignant nodules in patients with chronic lymphocytic thyroiditis (CLT). MDCT findings, including the size, solid percentage, calcification, margin, capsule, anteroposterior-transverse diameter ratio as well as the mode and the degree of enhancement of 137 thyroid nodules in 127 CLT cases were retrospectively analyzed. Furthermore, the correlation between MDCT findings and pathological results combined with the CT perfusion imaging was analyzed for the differences between benign and malignant nodules. A total of 77.5% (31/40) of malignant nodules were completely solid, and 33% (32/97) of benign nodules were predominantly cystic. Compared with the benign nodules, micro-calcification and internal calcification were more frequently observed in the malignant nodules (P<0.05). MDCT features such as ill-defined margin, absence of capsule or incomplete capsule or homogeneous enhancement were more likely to be present in the malignant nodules (P<0.05). Nevertheless, no significant difference was observed in the enhancement degree at arterial or venous phase between benign and malignant nodules (P>0.05). MDCT features are useful in differentiating the benign and malignant nodules in CLT patients, and it may be essential for a radiologist to review the MDCT characteristics of nodules in the clinical practice.
Turtulici, Giovanni; Orlandi, Davide; Corazza, Angelo; Sartoris, Riccardo; Derchi, Lorenzo Egildo; Silvestri, Enzo; Baek, Jung Hwan
Our aim was to assess the feasibility and outcome of ultrasound (US)-guided percutaneous radiofrequency (RF) ablation of benign thyroid nodules assisted by a real-time virtual needle tracking (VT) system. Forty-five patients (34 females, mean age ± standard deviation (SD): 44 ± 16 y, range: 29-68 y) with 45 benign non-functioning thyroid nodules (mean volume ± SD: 13.5 ± 6.7 mL, range: 12-22 mL) underwent VT-assisted US-guided RF ablation. Nodule volume was evaluated before treatment and during 6-mo of follow-up. Complication rates and patient satisfaction after treatment were also evaluated. By use of the VT system, the tip of the RF electrode was identified during all ablation procedures. The overall mean volume reduction and complication rate were 72.6 ± 11.3% and 2.5%, respectively. Overall satisfaction at the 6-mo follow-up was rated by patients as positive in 42 cases (93%). The VT system could be useful in thyroid nodule ablation procedures because it is able to track the RF electrode tip even when the tip is obscured by the bubbles produced by the ablative process. VT-assisted RF ablation can be a tolerable, non-surgical treatment for patients with benign non-functioning thyroid nodules.
Li, Xiao-long; Lu, Feng; Yue, Wen-wen; Sun, Li-ping; Bo, Xiao-wan; Guo, Le-hang; Xu, Jun-mei; Liu, Bo-ji; Li, Dan-dan; Qu, Shen
Objective: To evaluate the therapeutic efficacy and safety of ultrasound-guided percutaneous bipolar radiofrequency ablation (BRFA) of benign thyroid nodules by comparison with a matched untreated control group. Methods: The therapeutic efficacy and safety in 35 patients who were subjected to a single session of ultrasound-guided percutaneous BRFA (Group A) for benign thyroid nodules were compared with those in 35 untreated patients (Group B) with benign nodules. The benign nature of all the nodules was confirmed by ultrasound-guided fine-needle aspiration biopsy (FNAB), and all the patients had normal thyroid functions. BRFA was performed with a bipolar electrode (CelonProSurge 150–T20) with an output power of 20 W. Nodule volume, thyroid function and clinical symptoms of all the patients were compared before treatment and during follow-up. Results: In Group A, the BRFA procedures were completed with a mean time of 10.02 ± 3.30 min (range, 5.47–16.03 min) and with a mean total energy deposition of 10.747 ± 3704 J (range, 5510–17.770 J). The procedures were tolerated well in all the patients without causing any major complications. At the 6-month follow-up, all of the nodule volume decreased significantly (from 8.81 ± 8.66 to 1.59 ± 1.55 ml, p < 0.001) in Group A, whereas the nodule volume increased from 6.90 ± 3.77 to 7.87 ± 3.95 ml in Group B (p < 0.001). All (100%) the 35 nodules in Group A had volume reduction ratios (VRRs) of >50%, among which 3 (8.57%) had VRRs >90%. In Group A, the clinical symptoms of the patients who had symptoms before BRFA disappeared, whereas in Group B, the patients had no resolution of clinical symptoms at the 6-month follow-up. Conclusion: Ultrasound-guided percutaneous BRFA seems to be an effective and safe method for the treatment of benign thyroid nodules. It may gain a wide use in clinical practice. Advances in knowledge: Based on the comparable efficacy and clinical
Krisch, K; Jakesz, R; Erd, W; Klement, M B; Feigl, W; Sinzinger, H; Laczkovics, A
80 thyroid gland aspirates obtained post-operatively were compared with 69 clinically punctured cases. The results suggest that the vast majority of cytological misdiagnoses are caused by a faulty withdrawal technique. As a contribution to the differential diagnosis of "follicular neoplasia" an attempt was made to introduce the diameter of the nucelus obtained morphometrically as a parameter of malignancy. In aspirates of highly differentiated follicular carcinomas a significantly higher percentage of thyrocytes with larger nuclear diameters are found than in benign nodular changes in the thyroid gland.
We report a case of benign schwannoma mimicking metastatic carcinoma. A 55-year-old female with papillary thyroid carcinoma underwent total thyroidectomy. F-18 fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) demonstrated a focal hypermetabolic lesion with maximum standardized uptake value (SUVmax) 5.3 at the right chest wall. Conventional chest CT demonstrated a 5.4 cm ovoid mass lesion between the intercostal muscles and liver. Pathology revealed a schwannoma by tumor excision. This case demonstrates that benign schwannoma may demonstrate FDG uptake mimicking metastatic carcinoma.
Braganza, Melissa Z; de González, Amy Berrington; Schonfeld, Sara J; Wentzensen, Nicolas; Brenner, Alina V; Kitahara, Cari M
The higher incidence of thyroid cancer in women compared with men suggests an influence of sex steroid hormones in the etiology of this malignancy. We investigated a comprehensive set of potential indicators of lifetime sex steroid hormone exposure in relation to thyroid cancer risk. Using data from the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial, which enrolled 70,047 women, 50 to 78 years old, we prospectively examined associations of self-reported history of benign breast and gynecologic conditions, reproductive factors, and exogenous sex hormone use with thyroid cancer risk. Multivariable-adjusted HRs and 95% confidence intervals (CI) were calculated in models using age as the time metric. During follow-up (median, 11 years), 127 women were diagnosed with first primary thyroid cancer. Older age at natural menopause (≥55 vs. <50 years; HR, 2.24; 95% CI, 1.20-4.18), greater estimated lifetime number of ovulatory cycles (≥490 vs. <415 cycles; HR, 2.40; 95% CI, 1.33-4.30), greater number of live births (≥5 vs. 1-2; HR, 1.72; 95% CI, 1.05-2.82), and history of uterine fibroids (HR, 1.72; 95% CI, 1.18-2.50) were associated with an increased risk of thyroid cancer. Earlier age at menarche, greater number of reproductive years, history of a tubal ligation, and history of ovarian cysts were nonsignificantly associated with increased thyroid cancer risk. No associations were observed for oral contraceptive use, menopausal hormone therapy, or history of benign breast disease or endometriosis. In general, we found that factors reflecting a greater length of exposure to endogenous hormones, particularly during the reproductive years, were associated with risk of postmenopausal thyroid cancer.
Braganza, Melissa Z.; de González, Amy Berrington; Schonfeld, Sara J.; Wentzensen, Nicolas; Brenner, Alina V.; Kitahara, Cari M.
The higher incidence of thyroid cancer in women compared to men suggests an influence of sex steroid hormones in the etiology of this malignancy. We investigated a comprehensive set of potential indicators of lifetime sex steroid hormone exposure in relation to thyroid cancer risk. Using data from the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial, which enrolled 70,047 women, 50–78 years old, we prospectively examined associations of self-reported history of benign breast and gynecological conditions, reproductive factors, and exogenous sex hormone use with thyroid cancer risk. Multivariable-adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) were calculated in models using age as the time metric. During follow-up (median=11 years), 127 women were diagnosed with first primary thyroid cancer. Older age at natural menopause (≥55 vs. <50 years: HR=2.24, 95% CI:1.20–4.18), greater estimated lifetime number of ovulatory cycles (≥490 vs. <415 cycles: HR= 2.40, 95% CI:1.33–4.30), greater number of live births (≥5 vs. 1–2: HR=1.72, 95% CI:1.05–2.82), and history of uterine fibroids (HR=1.72, 95% CI:1.18–2.50) were associated with an increased risk of thyroid cancer. Earlier age at menarche, greater number of reproductive years, history of a tubal ligation, and history of ovarian cysts were non-significantly associated with increased thyroid cancer risk. No associations were observed for oral contraceptive use, menopausal hormone therapy, or history of benign breast disease or endometriosis. In general, we found that factors reflecting a greater length of exposure to endogenous hormones, particularly during the reproductive years, were associated with risk of postmenopausal thyroid cancer. PMID:24449056
Kohlhase, Konstantin David; Korkusuz, Yücel; Gröner, Daniel; Erbelding, Christian; Happel, Christian; Luboldt, Wolfgang; Grünwald, Frank
Purpose The aim of this study was to evaluate the decrease of benign thyroid nodules after bipolar radiofrequency ablation (RFA) in a 3-month follow-up using a multiple overlapping shot technique ('MOST'). Methods A total of 18 patients with 20 symptomatic benign thyroid nodules (17 cold nodules, 3 hyperfunctioning nodules) were treated in one single session by bipolar RFA. Bipolar ablation was performed using MOST. The nodule volumes were measured prior to ablation and 3 months after the procedure using ultrasound. The population consisted of either solid (>80% solid tissue within the volume of interest), complex, or cystic nodules (<20% solid tissue within the volume of interest). Results Bipolar RFA resulted in a highly significant (p < 0.0001) decrease of nodule volume (ΔV), median 5.3 mL (range 0.13-43.1 mL), corresponding to a relative reduction in mean of 56 ± 17.9%. Median initial volume was 8 mL (range 0.48-62 mL); 3 months after ablation a median volume of 2.3 mL (range 0.3-32 mL) was measured. Nodule growth ≥50% occurred in 70% (14 nodules). At the follow-up no complications such as infections, persisting pain, nerve injuries or immunogen stimulation occurred. Patients with cold nodules (15) remained euthyroid, with hyperfunctioning nodules either euthyroid (2) or latent hypofunctional (1). Conclusion The use of bipolar RFA is an effective, safe and suitable thermoablative technique to treat benign thyroid nodules. Combined with the multiple overlapping shot technique it allows sufficient ablation.
Medici, Marco; Liu, Xiaoyun; Kwong, Norra; Angell, Trevor E; Marqusee, Ellen; Kim, Matthew I; Alexander, Erik K
Thyroid nodules are common, and most are benign. Given the risk of false-negative cytology (i.e. malignancy), follow-up is recommended after 1-2 years, though this recommendation is based solely on expert opinion. Sonographic appearance may assist with planning, but is limited by large inter-observer variability. We therefore compared the safety and efficacy of long- versus short-interval follow-up after a benign initial aspiration, regardless of sonographic appearance. This study evaluated all patients referred to the Brigham and Women's Hospital Thyroid Nodule Clinic, between 1999 and 2010, with a cytologically benign nodule >1 cm and who had returned for follow-up sonographic evaluation. Despite standard clinical recommendations, variation in patient compliance resulted in variable follow-up intervals from time of initial aspiration to the first repeat evaluation. Main outcome measures included nodule growth, repeat fine needle aspiration (FNA), thyroidectomy, malignancy, and disease-specific mortality. We evaluated 1,254 patients with 1,819 cytologically benign nodules, with a median time to first follow-up of 1.4 years (range, 0.5-14.1 years). The longer the follow-up interval, the more nodules grew and the more repeat FNAs were performed (P <0.001). The most clinical meaningful endpoints of malignancy or mortality, however, did not differ between the various follow-up intervals. The risk of a thyroidectomy (usually because of compressive symptoms) increased when time to first follow-up exceeded >3 years (4.9% vs. 1.2%, P = 0.0001), though no difference in malignancy risk was identified (0.2-0.8%, P = 0.77). No (0%) thyroid cancer-specific deaths were identified in either cohort. While expert opinion currently recommends repeat evaluation of a cytologically benign nodule at 1-2 years, these are the first data to demonstrate that this interval can be safely extended to 3 years without increased mortality or patient harm. Nodule growth can be expected
Che, Y; Jin, S; Shi, C; Wang, L; Zhang, X; Li, Y; Baek, J H
Nodular goiter is one of the most common benign lesions in thyroid nodule. The main treatment of the disease is still the traditional surgical resection, however there are many problems such as general anesthesia, surgical scar, postoperative thyroid or parathyroid function abnormalities, and high nodules recurrence rate in residual gland. The purpose of this study was to compare the efficacy, safety, and cost-effectiveness of 2 treatment methods, surgery and radiofrequency ablation, for the treatment of benign thyroid nodules. From May 2012 to September 2013, 200 patients with nodular goiters who underwent surgery (group A) and 200 patients treated by radiofrequency ablation (group B) were enrolled in this study. Inclusion criteria were the following: 1) cosmetic problem, 2) nodule-related symptoms, 3) hyperfunctioning nodules related to thyrotoxicosis, and 4) refusal of surgery (for group B). An internally cooled radiofrequency ablation system and an 18-ga internally cooled electrode were used. We compared the 2 groups in terms of efficacy, safety, and cost-effectiveness during a 1-year follow-up. After radiofrequency ablation, the nodule volume decreased significantly from 5.4 to 0.4 mL (P = .002) at the 12-month follow-up. The incidence of complications was significantly higher from surgery than from radiofrequency ablation (6.0% versus 1.0%, P = .002). Hypothyroidism was detected in 71.5% of patients after surgery but in none following radiofrequency ablation. The rate of residual nodules (11.9% versus 2.9%, P = .004) and hospitalization days was significantly greater after surgery (6.6 versus 2.1 days, P < .001), but the cost difference was not significant. Surgical resection and radiofrequency ablation are both effective treatments of nodular goiter. Compared with surgery, the advantages of radiofrequency ablation include fewer complications, preservation of thyroid function, and fewer hospitalization days. Therefore, radiofrequency ablation should be
Jeong, Woo Kyoung; Baek, Jung Hwan; Rhim, Hyunchul; Kim, Yoon Suk; Kwak, Min Sook; Jeong, Hyun Jo; Lee, Ducky
This study evaluated the safety and volume reduction of ultrasonography (US)-guided radiofrequency ablation (RFA) for benign thyroid nodules, and the factors affecting the results obtained. A total of 302 benign thyroid nodules in 236 euthyroid patients underwent RFA between June 2002 and January 2005. RFA was carried out using an internally cooled electrode under local anesthesia. The volume-reduction ratio (VRR) was assessed by US and safety was determined by observing the complications during the follow-up period (1-41 months). The correlation between the VRR and several factors (patient age, volume and composition of the index nodule) was evaluated. The volume of index nodules was 0.11-95.61 ml (mean, 6.13 +/- 9.59 ml). After ablation, the volume of index nodules decreased to 0.00-26.07 ml (mean, 1.12 +/- 2.92 ml) and the VRR was 12.52-100% (mean, 84.11 +/- 14.93%) at the last follow-up. A VRR greater than 50% was observed in 91.06% of nodules, and 27.81% of index nodules disappeared. The complications encountered were pain, hematoma and transient voice changes. In conclusion, RFA is a safe modality effective at reducing volume in benign thyroid nodules.
Bernardi, Stella; Dobrinja, Chiara; Fabris, Bruno; Bazzocchi, Gabriele; Sabato, Nicoletta; Ulcigrai, Veronica; Giacca, Massimo; Barro, Enrica; De Manzini, Nicolò; Stacul, Fulvio
Objective. Benign thyroid nodules are a common occurrence whose only remedy, in case of symptoms, has always been surgery until the advent of new techniques, such as radiofrequency ablation (RFA). This study aimed at evaluating RFA efficacy, tolerability, and costs and comparing them to hemithyroidectomy for the treatment of benign thyroid nodules. Design and Methods. 37 patients who underwent RFA were retrospectively compared to 74 patients surgically treated, either in a standard inpatient or in a short-stay surgical regimen. Efficacy, tolerability, and costs were compared. The contribution of final pathology was also taken into account. Results. RFA reduced nodular volume by 70% after 12 months and it was an effective method for treating nodule-related clinical problems, but it was not as effective as surgery for the treatment of hot nodules. RFA and surgery were both safe, although RFA had less complications and pain was rare. RFA costed €1,661.50, surgery costed €4,556.30, and short-stay surgery costed €4,139.40 per patient. RFA, however, did not allow for any pathologic analysis of the nodules, which, in 6 patients who had undergone surgery (8%), revealed that the nodules harboured malignant cells. Conclusions. RFA might transform our approach to benign thyroid nodules.
Bernardi, Stella; Dobrinja, Chiara; Fabris, Bruno; Bazzocchi, Gabriele; Sabato, Nicoletta; Ulcigrai, Veronica; Giacca, Massimo; Barro, Enrica; De Manzini, Nicolò; Stacul, Fulvio
Objective. Benign thyroid nodules are a common occurrence whose only remedy, in case of symptoms, has always been surgery until the advent of new techniques, such as radiofrequency ablation (RFA). This study aimed at evaluating RFA efficacy, tolerability, and costs and comparing them to hemithyroidectomy for the treatment of benign thyroid nodules. Design and Methods. 37 patients who underwent RFA were retrospectively compared to 74 patients surgically treated, either in a standard inpatient or in a short-stay surgical regimen. Efficacy, tolerability, and costs were compared. The contribution of final pathology was also taken into account. Results. RFA reduced nodular volume by 70% after 12 months and it was an effective method for treating nodule-related clinical problems, but it was not as effective as surgery for the treatment of hot nodules. RFA and surgery were both safe, although RFA had less complications and pain was rare. RFA costed €1,661.50, surgery costed €4,556.30, and short-stay surgery costed €4,139.40 per patient. RFA, however, did not allow for any pathologic analysis of the nodules, which, in 6 patients who had undergone surgery (8%), revealed that the nodules harboured malignant cells. Conclusions. RFA might transform our approach to benign thyroid nodules. PMID:25045352
Park, Hye Sun; Choi, Young Jun; Lee, Jeong Hyun
In the treatment of benign thyroid nodules, ethanol ablation (EA), and radiofrequency ablation (RFA) have been suggested for cystic and solid thyroid nodules, respectively. Although combining these ablation techniques may be effective, no guidelines for or reviews of the combination have been published. Currently, there are three ways of combining EA and RFA: additional RFA is effective for treatment of incompletely resolved symptoms and solid residual portions of a thyroid nodule after EA. Additional EA can be performed for the residual unablated solid portion of a nodule after RFA if it is adjacent to critical structures (e.g., trachea, esophagus, and recurrent laryngeal nerve). In the concomitant procedure, ethanol is injected to control venous oozing after aspiration of cystic fluid prior to RFA of the remaining solid nodule. PMID:28458598
Chung, Jin; Youk, Ji Hyun; Kim, Jeong-Ah; Kwak, Jin Young; Kim, Eun-kyung; Ryu, Young Hoon; Son, Eun Ju
Ultrasound (US)-guided fine needle aspiration cytology (FNAC) is an accurate, reliable, and simple method to identify a thyroid nodule as benign or malignant. However, non-diagnostic cytology results for thyroid nodules are a major limitation of US-guided FNAC. To investigate the incidence of thyroid cancer among cases with non-diagnostic results on FNAC and to provide suggestions for the management of thyroid nodules that are initially non-diagnostic by FNAC according to ultrasonographic findings. From July 2006 to December 2009, 10,317 thyroid nodules in 6684 consecutive patients underwent US-guided FNAC at our institute. Among these, 871 thyroid nodules (8.4%) were diagnosed as non-diagnostic on initial cytologic evaluation and 196 underwent a second or third FNAC. Twenty-seven thyroid nodules (18.9%) underwent surgery, while 116 thyroid nodules were cytologically confirmed as benign with no remarkable change on follow-up US were included. We retrospectively reviewed the US findings for a total of 143 thyroid nodules (123 benign nodules and 20 malignant nodules). The US features that we compared included composition, echogenicity, margin, calcifications, shape, and underlying echogenicity. In total, thyroid cancer was diagnosed in 20 nodules (14.0%). The size of the nodule was significantly associated with malignancy (P < 0.05). Most of the sonographically probable benign nodules were found to be benign (97.6%). Suspicious nodules on US were thyroid cancer in 43.2% of cases. Marked hypoechogenicity, microlobulated or irregular margin, microcalcifications, and taller-than-wide shape were significant US findings that correlated with malignancy (P < 0.05). The diagnostic performance of ultrasound for initially non-diagnostic thyroid nodules was as follows: sensitivity of 90.0%, specificity of 65.0%, positive predictive value of 29.5%, and negative predictive value of 97.6%. In terms of management of thyroid nodules with non-diagnostic FNAC cytology, US evaluation
Background Estrogen metabolism may be associated with the pathophysiological development of papillary thyroid carcinoma (PTC). Methods To evaluate the differential estrogen metabolism between benign and malignant PTCs, estrogen profiling by gas chromatography–mass spectrometry was applied to urine samples from postmenopausal patients with 9 benign tumors and 18 malignant stage I and III/IV PTCs. Results The urinary concentration of 2-methoxyestradiol was significantly lower in the stage I malignant patients (3.5-fold; P < 0.025) than in the benign group. The metabolic ratios of 16α-OH-estrone/estrone and estriol/estradiol, which are responsible for 16α-hydroxylase activity, were increased more than 2.5-fold in the advanced-stage malignant PTC (P < 0.02 each). The more than 6.2-fold decrease in the urinary 2-/16α-hydroxylase ratio in stage III/IV malignant PTC was consistent with the ratio in postmenopausal patients with endocrine gland cancers. In addition, reductive 17β-hydroxysteroid dehydrogenase (17β-HSD; estradiol/estrone or estriol/16α-OH-estrone) was present at significantly higher levels in subjects with stage III/IV malignant PTCs than in benign subjects (>3.5-fold difference; P < 0.002). In particular, the estriol/16α-OH-estrone ratio differentiated between the benign and early-stage malignant patients (P < 0.01). Conclusions Increased 16α-hydroxylation and/or a decreased 2-/16α-ratio, as well increased reductive 17β-HSD, with regard to estrogen metabolism could provide potential biomarkers. The devised profiles could be useful for differentiating malignant thyroid carcinomas from benign adenomas in postmenopausal women. PMID:24156385
Leux, Christophe; Truong, Thérèse; Petit, Claire; Baron-Dubourdieu, Dominique; Guénel, Pascal
Exceptionally high incidence rates of thyroid cancer have been observed in New Caledonia, particularly in Melanesian women, but familial aggregation of thyroid diseases in this population is unknown. We study the association between family history of malignant or benign thyroid diseases and non-medullary thyroid cancer in this country. We conducted a population-based case-control study including 332 cases with papillary or follicular carcinoma diagnosed in 1993-1999 and 412 controls, matched by sex and 5-year age-group. Thyroid cancer was associated with a history of thyroid cancer in first-degree relatives (odds ratio (OR), 3.2; 95 % CI, 1.6-6.2) and with a family history of multinodular goiter (OR, 3.6; 95 % CI, 1.9-7.0). The ORs did not change by age at diagnosis and with the number of affected relatives. The study provides evidence that the familial component of thyroid cancer is particularly strong in men. Thyroid cancer was not associated with a family history of thyroid diseases in Melanesians from the Loyalty Islands, the area with the highest incidence rates for thyroid cancer, possibly indicating a high frequency of genetic susceptibility variants and lack of genetic variation in this population subgroup. Overall our findings confirm an elevated risk of thyroid cancer in individuals with a family history of malignant or benign thyroid diseases, particularly in Melanesians where familial aggregation of thyroid cancer had never been investigated before. The study of genetic variants in candidate susceptibility genes for thyroid cancer may help clarifying the absence of an association in the subgroup of Melanesians from the Loyalty Islands.
Witt, Robert L
The rapid increase in the rate of papillary thyroid cancer is likely caused by improved surveillance. A significant trend toward total thyroidectomy for low-risk differentiated thyroid cancer is present in the United States after a paradigm shift from treatment of macroscopic disease to the treatment of macroscopic and microscopic disease by increasingly sensitive tests. Compelling arguments for thyroid lobectomy and total thyroidectomy for low-risk thyroid cancer remain. The relatively small number of deaths from thyroid cancer, the small number of clinical thyroid cancers, and the huge number of incidental thyroid cancers are indicative of how little we understand the biology of this disease. Clinical medicine awaits biologic markers to refine treatment recommendations.
Yue, Wen-Wen; Wang, Shu-Rong; Lu, Feng; Sun, Li-Ping; Guo, Le-Hang; Zhang, Yong-Lin; Li, Xiao-Long; Xu, Hui-Xiong
To compare the efficacy and the safety of radiofrequency ablation and microwave ablation for treatment of benign thyroid nodules using a propensity score matching study design. Two hundred and sixty patients with benign thyroid nodules were studied retrospectively, including 102 patients treated with radiofrequency ablation and 158 treated with microwave ablation. To reduce confounding bias due to retrospective assignment, propensity score matching was performed to balance the preablation data of the two groups. After matching, a total of 102 patient pairs (1:1) were created. The volume reduction ratio, therapeutic success rate, symptom and cosmetic score, and major complication were compared between the two groups at 1, 3, 6, and 12 months after treatment. Between the well-matched groups, no significant differences were found in all nodule volume-related end points at 6 months (volume reduction ratio: 79.4 vs. 77.2 %, P = 0.108; symptom score: 2.1 vs. 1.9, P = 0.456; cosmetic score: 2.1 vs. 2.3, P = 0.119; therapeutic success rate: 99 vs. 97 %, P = 0.621) and 12 months (volume reduction ratio: 83.6 vs. 81.6 %, P = 0.144; symptom score: 1.5 vs. 1.5, P = 0.869; cosmetic score: 1.6 vs. 1.7, P = 0.409; therapeutic success rate: 100 vs. 100 %, P > 0.99) after treatment. No major complications occurred in either group (P > 0.99). With well-matched groups and consistent procedure design, our results demonstrated that the volume reduction ratio, therapeutic success rate, symptom and cosmetic score, and complications related to treatment for the two techniques are equivalent. Radiofrequency ablation and microwave ablation are both effective and safe methods in treating benign thyroid nodules.
Yoruker, Ebru Esin; Terzioglu, Duygu; Teksoz, Serkan; Uslu, Fatma Ezel; Gezer, Ugur; Dalay, Nejat
MicroRNAs (miRNAs) represent a class of short endogenous non-coding RNAs that negatively regulate gene expression at the post-transcriptional level in many biological processes, including proliferation, differentiation, stress response and apoptosis. In this study we analyzed a set of seven miRNA molecules in sera of patients with papillary thyroid cancer, multinodular goiter and healthy controls to identify miRNA molecules that may have utility as markers for PTC. MiR-21 serum levels in the preoperative PTC and MG groups were significantly higher than the control group. Likewise, postoperative levels of miR-151-5p, miR-221 and miR-222 were significantly lower in patients with PTC. When serum miRNA levels were evaluated according to stage, postoperative levels of miR-151-5p and miR-222 were significantly lower in patients with advanced stages of the disease. The miRNA levels were also found associated with the size of the primary tumor. Our data imply that specific miRNA molecules which are differentially expressed in thyroid tumors may play role in the development of papillary thyroid carcinoma. PMID:27162538
Donangelo, Ines; Walts, Ann E; Bresee, Catherine; Braunstein, Glenn D
Whether or not autoimmune thyroid disease influences the progression of differentiated thyroid cancer (DTC) remains controversial. Findings of previous studies are influenced by lead time bias and/or procedure bias selection. These biases can be reduced by studying a single-institution patient population that underwent a similar extent of surgical resection. From a cohort of 660 patients with DTC who underwent thyroidectomy, we retrospectively studied 357 patients who underwent total thyroidectomy and central compartment node dissection (CCND) for DTC between 2003 and 2013. Forty-one percent (140/345) of study patients had lymphocytic thyroiditis (LT), and 30% (91/301) had serum positive for thyroglobulin antibody (TgAb). LT was reported in 78% of the TgAb-positive cases. Sixty percent (213/357) of cases had metastatic thyroid carcinoma in 1 or more neck lymph nodes (55% [198/357] central compartment, and 22% [77/356] lateral compartment). Patients with LT had fewer metastatic cervical lymph nodes than those with no LT (2.7 ± 4.7 vs 3.5 ± 4.8, respectively, P = .0285). Patients with positive TgAb and thyroiditis had a larger number of benign cervical lymph nodes removed than those with negative TgAb or no LT. No significant difference was observed in age, tumor size, multifocality, extrathyroidal extension, vascular invasion, or frequency of cervical lymph node metastasis between TgAb-negative and -positive cases or between cases with and without LT. Lymphocytic thyroiditis is associated with fewer central neck compartment metastatic lymph nodes and a larger number of excised reactive benign cervical lymph nodes. Whether this association indicates a protective role of thyroid autoimmunity in lymph node spreading remains unclear. CCND = central compartment node dissection DTC = differentiated thyroid cancer HT = Hashimoto thyroiditis LT = lymphocytic thyroiditis TgAb = thyroglobulin antibody TPO = thyroid peroxidase.
Bonnema, Steen Joop; Hegedüs, Laszlo
Radioiodine ((131)I) therapy of benign thyroid diseases was introduced 70 yr ago, and the patients treated since then are probably numbered in the millions. Fifty to 90% of hyperthyroid patients are cured within 1 yr after (131)I therapy. With longer follow-up, permanent hypothyroidism seems inevitable in Graves' disease, whereas this risk is much lower when treating toxic nodular goiter. The side effect causing most concern is the potential induction of ophthalmopathy in predisposed individuals. The response to (131)I therapy is to some extent related to the radiation dose. However, calculation of an exact thyroid dose is error-prone due to imprecise measurement of the (131)I biokinetics, and the importance of internal dosimetric factors, such as the thyroid follicle size, is probably underestimated. Besides these obstacles, several potential confounders interfere with the efficacy of (131)I therapy, and they may even interact mutually and counteract each other. Numerous studies have evaluated the effect of (131)I therapy, but results have been conflicting due to differences in design, sample size, patient selection, and dose calculation. It seems clear that no single factor reliably predicts the outcome from (131)I therapy. The individual radiosensitivity, still poorly defined and impossible to quantify, may be a major determinant of the outcome from (131)I therapy. Above all, the impact of (131)I therapy relies on the iodine-concentrating ability of the thyroid gland. The thyroid (131)I uptake (or retention) can be stimulated in several ways, including dietary iodine restriction and use of lithium. In particular, recombinant human thyrotropin has gained interest because this compound significantly amplifies the effect of (131)I therapy in patients with nontoxic nodular goiter.
Yue, Wenwen; Wang, Shurong; Wang, Bin; Xu, Qingling; Yu, Shoujun; Yonglin, Zhang; Wang, Xiju
Microwave ablation is a minimally invasive technique that has been used to treat benign and malignant tumors of liver, lung and kidney. Towards thyroid nodules, only a few cases are reported so far. The aim of the study was to investigate the effectiveness and safety of ultrasound-guided percutaneous microwave ablation in the treatment of benign thyroid nodules with a large sample. A total of 477 benign thyroid nodules in 222 patients underwent microwave ablation in our department from July 2009 to March 2012. Microwave ablation was carried out using microwave antenna (16G) under local anesthesia. Nodule volume, thyroid function and clinical symptoms were evaluated before treatment and at 1, 3, more than 6 months. The study was ethics committee approved and written informed consents were obtained from all patients. All thyroid nodules significantly decreased in size after microwave ablation. A 6-month follow-up was achieved in 254 of 477 nodules, and the mean decrease in the volume of thyroid nodules was from 2.13 ± 4.42 ml to 0.45 ± 0.90 ml, with a mean percent decrease of 0.65 ± 0.65. A volume-reduction ratio greater than 50% was observed in 82.3% (209/254) of index nodules, and 30.7% (78/254) of index nodules disappeared 6-month after the ablation. The treatment was well tolerated and no major complications were observed except pain and transient voice changes. Microwave ablation seems to be a safe and effective technique for the treatment of benign thyroid nodules. Further prospective randomized studies are needed to define the role of the procedure in the treatment of thyroid nodules. Crown Copyright © 2012. Published by Elsevier Ireland Ltd. All rights reserved.
Shao, Jun; Shen, Ye; Lü, Jieqiong; Wang, Jianming
The aim of this study was to evaluate the value of ultrasound scores obtained by conventional ultrasonography and ultrasound elastography in the differentiation of benign and malignant thyroid nodules in Chinese patients. This study included 297 patients who were referred for surgery for compressive symptoms or suspicion of malignancy. Five hundred and twelve thyroid nodules were examined by ultrasonography. The final diagnosis was based on histological findings. A seven-point ultrasound scoring system based on conventional ultrasonography and a five-point scoring system based on ultrasound elastography were applied independently or in combination. The receiver operating characteristic (ROC) curves were graphed, and the areas under the curves (AUCs) were compared using the χ(2) -test. Solid composition, hypo-echoic appearance, an irregular or blurred margin, an aspect ratio ≥1, intranodular blood flow and presence of microcalcifications were significant predictors of malignant thyroid nodules. The AUC (95% CI) was 0·9067 (0·8817-0·9318) for the ultrasound scores based on conventional ultrasonography and 0·9080 (0·8842-0·9317) for the elasticity scores. The combination of these two scoring systems provided good accuracy with an AUC (95% CI) of 0·9415 (0·9223-0·9606), which was significantly higher than that obtained with the conventional ultrasound scores (χ(2) = 36·03, P < 0·001) or the elasticity scores (χ(2) = 12·80, P < 0·001) individually. When we set the cut-point to ≥5, the sensitivity and specificity were 85·22% and 87·38%, respectively. Elastography in combination with conventional ultrasonography is a promising imaging-based approach that can assist in the differential diagnosis of thyroid cancer. © 2014 John Wiley & Sons Ltd.
Sebag, F.; Henry, J. F.
Background Endoscopic thyroidectomy (ET) is a demanding surgical technique in which dissection of the gland is entirely performed with an endoscope, in a closed area maintained by insufflation or mechanical retraction. ET by direct cervical approach (anterior or lateral) is minimally invasive, but ET using an extracervical access (chest wall, breast, or axillary) is not. No technique seems to be universally accepted yet. This review was designed to clarify the existing evidence for performing endoscopic thyroid resections in the management of benign thyroid nodules. Methods A database search was conducted in PubMed and Embase from which summaries and abstracts were screened for relevant data, matching our definition. Publications were further assessed and assigned their respective levels of evidence. Additional data derived from our own unit’s experience with endoscopic thyroidectomy were included. Results Thirty mainly retrospective cohort studies have been published in which morbidity, such as unilateral vocal cord palsy, is poorly evaluated. ET takes from 90 to 280 minutes for lobectomy by cervical access and total thyroidectomy by chest wall approach, respectively. Cosmetic outcome in extracervical approach is less troubled by size of the resected specimen compared with direct cervical approach. Extracervical approach avoids a neck scar but implies invasiveness in terms of dissection and postoperative discomfort. Long-term cosmetic outcome comparisons with conventional thyroidectomy have not been published. Conclusions Currently it is not possible to recommend the application of ET based on evidence. Reported complications stress the importance of advanced endoscopic skills. ET should only be offered to carefully selected patients and, therefore, a high volume of patients requiring thyroid surgery is needed. Superiority of endoscopic to conventional thyroidectomy has yet to be demonstrated. Possible advantages of endoscopic thyroid techniques and our
Lakiotaki, Eleftheria; Giaginis, Constantinos; Tolia, Maria; Alexandrou, Paraskevi; Delladetsima, Ioanna; Giannopoulou, Ioanna; Kyrgias, George; Patsouris, Efstratios; Theocharis, Stamatios
The endocannabinoid system is comprised of cannabinoid receptors (CB1 and CB2), their endogenous ligands (endocannabinoids), and proteins responsible for their metabolism participate in many different functions indispensable to homeostatic regulation in several tissues, exerting also antitumorigenic effects. The present study aimed to evaluate the clinical significance of CB1 and CB2 expression in human benign and malignant thyroid lesions. CB1 and CB2 proteins' expression was assessed immunohistochemically on paraffin-embedded thyroid tissues obtained from 87 patients with benign (n = 43) and malignant (n = 44) lesions and was statistically analyzed with clinicopathological parameters, follicular cells' proliferative capacity, and risk of recurrence rate estimated according to the American Thyroid Association (ATA) staging system. Enhanced CB1 and CB2 expression was significantly more frequently observed in malignant compared to benign thyroid lesions (p = 0.0010 and p = 0.0005, resp.). Enhanced CB1 and CB2 expression was also significantly more frequently observed in papillary carcinomas compared to hyperplastic nodules (p = 0.0097 and p = 0.0110, resp.). In malignant thyroid lesions, elevated CB2 expression was significantly associated with the presence of lymph node metastases (p = 0.0301). Enhanced CB2 expression was also more frequently observed in malignant thyroid cases with presence of capsular (p = 0.1165), lymphatic (p = 0.1989), and vascular invasion (p = 0.0555), as well as in those with increased risk of recurrence rate (p = 0.1165), at a nonsignificant level though, whereas CB1 expression was not associated with any of the clinicopathological parameters examined. Our data suggest that CB receptors may be involved in malignant thyroid transformation and especially CB2 receptor could serve as useful biomarker and potential therapeutic target in thyroid neoplasia. PMID:26539529
Mauri, Giovanni; Cova, Luca; Monaco, Cristian Giuseppe; Sconfienza, Luca Maria; Corbetta, Sabrina; Benedini, Stefano; Ambrogi, Federico; Milani, Valentina; Baroli, Alberto; Ierace, Tiziana; Solbiati, Luigi
To evaluate the reduction over time of benign thyroid nodules treated using percutaneous laser ablation (PLA) and radiofrequency ablation (RFA) by the same equipe. Ninety patients (age 55.6 ± 14.1 years) underwent ablation for benign thyroid nodule causing compression/aesthetic dissatisfaction from 2011. Fifty-nine (age 55.8 ± 14.1 years) underwent RFA and 31 (age 55.2 ± 14.2 years) PLA, ultrasound guided. Technical success, complications, duration of ablation and treatment, energy deployed, volumetric percentage reduction at 1, 6 and 12 months were derived. A regression model for longitudinal measurements was used with random intercept and random slope. Values are expressed as mean ± standard deviation or N (%). Technical success was always obtained. No major complications occurred. Mean ablation time was 30.1 ± 13.8 vs. 13.9 ± 5.9 min (p < .0001) and mean energy deployment was 5422.3 ± 2484.5 J vs. 34 662.7 ± 15 812.3 J in PLA vs. RFA group. Mean volume reduced from 20.3 ± 16.4 ml to 13.17 ± 10.74 ml (42% ± 17% reduction) at 1st month, 8.7 ± 7.4 ml (60% ± 15% reduction) at 6th month and 7.1 ± 7.7 ml (70%% ± 16% reduction) at 12th month, in PLA group, and from 32.7 ± 19.5 ml to 17.2 ± 12.9 ml (51%±15% reduction) at 1st month, 12.8 ± 9.6 ml (64 ± 14% reduction) at 6th month and 9.9 ± 9.2 ml (74% ± 14% reduction) at 12th month in RFA group. No difference in time course of the relative volume reduction between the two techniques was found. RFA and PLA are similarly feasible, safe and effective in treating benign thyroid nodules when performed by the same equipe. RFA is faster than PLA but require significantly higher energy.
Su, Xuan; He, Caiyun; Ma, Jiangjun; Tang, Tao; Zhang, Xiao; Ye, Zulu; Long, Yakang; Shao, Qiong
RET/PTC rearrangements, resulting in aberrant activity of the RET protein tyrosine kinase receptor, occur exclusively in papillary thyroid cancer (PTC). In this study, we examined the association between RET/PTC rearrangements and thyroid hormone homeostasis, and explored whether concomitant diseases such as nodular goiter and Hashimoto's thyroiditis influenced this association. A total of 114 patients diagnosed with PTC were enrolled in this study. Thyroid hormone levels, clinicopathological parameters and lifestyle were obtained through medical records and surgical pathology reports. RET/PTC rearrangements were detected using TaqMan RT-PCR and validated by direct sequencing. No RET/PTC rearrangements were detected in benign thyroid tissues. RET/PTC rearrangements were detected in 23.68% (27/114) of PTC tissues. No association between thyroid function, clinicopathological parameters and lifestyle was observed either in total thyroid cancer patients or the subgroup of patients with concomitant disease. In the subgroup of PTC patients without concomitant disease, RET/PTC rearrangement was associated with multifocal cancer (P = 0.018). RET/PTC rearrangement was also correlated with higher TSH levels at one month post-surgery (P = 0.037). Based on likelihood-ratio regression analysis, the RET/PTC-positive PTC cases showed an increased risk of multifocal cancers in the thyroid gland (OR = 5.57, 95% CI, 1.39–22.33). Our findings suggest that concomitant diseases such as nodular goiter and Hashimoto's thyroiditis in PTC may be a confounding factor when examining the effects of RET/PTC rearrangements. Excluding the potential effect of this confounding factor showed that RET/PTC may confer an increased risk for the development of multifocal cancers in the thyroid gland. Aberrantly increased post-operative levels of TSH were also associated with RET/PTC rearrangement. Together, our data provides useful information for the treatment of papillary thyroid cancer. PMID
Su, Xuan; He, Caiyun; Ma, Jiangjun; Tang, Tao; Zhang, Xiao; Ye, Zulu; Long, Yakang; Shao, Qiong; Shao, Jianyong; Yang, Ankui
RET/PTC rearrangements, resulting in aberrant activity of the RET protein tyrosine kinase receptor, occur exclusively in papillary thyroid cancer (PTC). In this study, we examined the association between RET/PTC rearrangements and thyroid hormone homeostasis, and explored whether concomitant diseases such as nodular goiter and Hashimoto's thyroiditis influenced this association. A total of 114 patients diagnosed with PTC were enrolled in this study. Thyroid hormone levels, clinicopathological parameters and lifestyle were obtained through medical records and surgical pathology reports. RET/PTC rearrangements were detected using TaqMan RT-PCR and validated by direct sequencing. No RET/PTC rearrangements were detected in benign thyroid tissues. RET/PTC rearrangements were detected in 23.68% (27/114) of PTC tissues. No association between thyroid function, clinicopathological parameters and lifestyle was observed either in total thyroid cancer patients or the subgroup of patients with concomitant disease. In the subgroup of PTC patients without concomitant disease, RET/PTC rearrangement was associated with multifocal cancer (P = 0.018). RET/PTC rearrangement was also correlated with higher TSH levels at one month post-surgery (P = 0.037). Based on likelihood-ratio regression analysis, the RET/PTC-positive PTC cases showed an increased risk of multifocal cancers in the thyroid gland (OR = 5.57, 95% CI, 1.39-22.33). Our findings suggest that concomitant diseases such as nodular goiter and Hashimoto's thyroiditis in PTC may be a confounding factor when examining the effects of RET/PTC rearrangements. Excluding the potential effect of this confounding factor showed that RET/PTC may confer an increased risk for the development of multifocal cancers in the thyroid gland. Aberrantly increased post-operative levels of TSH were also associated with RET/PTC rearrangement. Together, our data provides useful information for the treatment of papillary thyroid cancer.
Chen, Fen; Tian, Guo; Kong, Dexing; Zhong, Liyun; Jiang, Tian'an
Thyroid nodules (TNs) usually appearing in the general population have the potential possibility of malignant transformation and common problems of jugular oppression such as dyspnea and hoarseness. We performed this meta-analysis to evaluate the efficiency of radiofrequency ablation (RFA) for the treatment of benign TNs in accord with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statements. Published literatures were retrieved from PubMed, Embase, Web of Science, and Scopus up to January 27, 2016. Pooled standard mean difference with 95% confidence interval was estimated by fixed- or random-effects model depending on heterogeneity, which was calculated using the Cochran Q, τ, and I statistics. The quality of the articles was evaluated by the Newcastle-Ottawa scale. Meta-analysis of data from 1090 patients with 1406 benign TNs in 20 articles showed that with the subgroup stratified by nodule volume, they were significantly decreased at 1, 3, 6, 12, and the last follow-up months, when comparing post-RFA with the initial nodule volume. In addition, the volume also notably declined by cold and hot nodules. By subgrouping into the largest diameter, symptom score, cosmetic score, thyrotropin, triiodothyronine, free thyroxine level, and vascularity, the pooled data indicated that there was a decrease in largest diameter, symptom score, cosmetic score, triiodothyronine level, and vascular scale, an unchanged free thyroxine, and an increased thyrotropin level after RFA. The publication bias for this particular study is presented in the following groups: nodule volume reduction at 6 months and last follow-up month after RFA and symptom score. In summary, by pooling of these studies we recommended that RFA indeed has the advantages in improving outcomes and providing better prognosis for patients with benign TNs.
Donangelo, Ines; Walts, Ann E; Bresee, Catherine; Braunstein, Glenn D
Whether or not autoimmune thyroid disease influences progression of differentiated thyroid cancer (DTC) remains controversial. Findings of previous studies are influenced by lead time bias and/or procedure bias selection These biases can be reduced by studying a single-institution patient population that underwent similar extent of surgical resection. From a cohort of 660 patients with DTC who underwent thyroidectomy, we retrospectively studied 357 patients who underwent total thyroidectomy and central compartment node dissection (CCND) for DTC between 2003 and 2013. Forty-one percent (140/345) of study patients had lymphocytic thyroiditis (LT) and 30% (91/301) had positive serum anti-thyroglobulin antibody (TgAb). LT was reported in 78% of the TgAb-positive cases. Sixty percent (213/357) of cases had metastatic thyroid carcinoma in one or more neck lymph nodes [55% (198/357) central compartment, and 22% (77/356) lateral compartment]. Patients with LT had fewer metastatic cervical lymph nodes than those with no LT (2.7+/-4.7 vs 3.5+/-4.8, respectively, p=0.0285). Patients with positive TgAb and thyroiditis had a larger number of benign cervical lymph nodes removed than those with negative TgAb or no LT. No significant difference was observed in age, tumor size, multifocality, extra-thyroidal extension, vascular invasion or frequency of cervical lymph node metastasis between TgAb-negative and TgAb-positive cases or between cases with and without LT. Lymphocytic thyroiditis is associated with fewer central neck compartment metastatic lymph nodes, and with larger number of excised reactive benign cervical lymph nodes Whether this association indicates protective role of thyroid auto-immunity in lymph node spreading remains unclear.
Korkusuz, Yücel; Mader, Oscar Maximilian; Kromen, Wolfgang; Happel, Christian; Ahmad, Shadi; Gröner, Daniel; Koca, Mithat; Mader, Alexander; Grünwald, Frank; Korkusuz, Hüdayi
To evaluate if internally cooled microwave ablation (cMWA) is a safe and effective method for treatment of benign and malign thyroid nodules. 9 patients with 11 symptomatic cold benign thyroid nodules and 1 recurrent thyroid carcinoma ranging in volume from 9.1 to 197ml (mean size 52± 57ml) were treated with cMWA. The mean age of the patients was 59 years. Pain during the treatment was measured on a 10-point scale. Side effects revealed by ultrasound or patients' complaints were documented. Periablative efficacy was measured 24h after cMWA as change (Δ) in serum thyreoglobulin (Tg). Nodule elasticity was measured on a 4-point scale, blood circulation and echogenicity on a 3-point scale. All patients tolerated cMWA well. Median pain intensity averaged 2.1±0.8 (range: 1-3). Postablative hematoma was observed in all cases. In no cases ablation led to hoarseness, superficial burns, nodule ruptures, vagal reactions or dysphagia. cMWA lead to a significant decrease of blood circulation, nodule echogenicity and a significant increase of elasticity (Δ = 1.1 ± 0.33; 0.8 ± 0.4 and 1.1 ± 0.6 points)(p<0.05). An average increase of 4495ng/ml Tg was measured (p<0.05). cMWA is an effective and secure method for treatment of thyroid nodules. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.
Ramli, Nur Siti Fatimah; Mat Junit, Sarni; Leong, Ng Khoon; Razali, Nurhanani; Jayapalan, Jaime Jacqueline; Abdul Aziz, Azlina
Synthesis of thyroid hormones and regulation of their metabolism involve free radicals that may affect redox balance in the body. Thyroid disorders causing variations in the levels of thyroid hormones may alter cellular oxidative stress. The aim of this study was to measure the antioxidant activities and biomarkers of oxidative stress in serum and red blood cells (RBC) of patients with benign and malignant thyroid disorders and to investigate if changes in the antioxidant activities in these patients were linked to alterations in genes encoding the antioxidant enzymes. Forty-one patients with thyroid disorders from University of Malaya Medical Centre were recruited. They were categorised into four groups: multinodular goitre (MNG) (n = 18), follicular thyroid adenoma (FTA) (n = 7), papillary thyroid cancer (PTC) (n = 10), and follicular thyroid cancer (FTC) (n = 6). Serum and RBC of patients were analysed for antioxidant activities, antioxidant enzymes, and biomarkers of oxidative stress. Alterations in genes encoding the antioxidant enzymes were analysed using whole exome sequencing and PCR-DNA sequencing. Patients with thyroid disorders had significantly higher serum superoxide dismutase (SOD) and catalase (CAT) activities compared to control, but had lower activities in RBC. There were no significant changes in serum glutathione peroxidase (GPx) activity. Meanwhile, GPx activity in RBC was reduced in PTC and FTC, compared to control and the respective benign groups. Antioxidant activities in serum were decreased in the thyroid disorder groups when compared to the control group. The levels of malondialdehyde (MDA) were elevated in the serum of FTA group when compared to controls, while in the RBC, only the MNG and PTC groups showed higher MDA equivalents than control. Serum reactive oxygen species (ROS) levels in PTC group of both serum and RBC were significantly higher than control group. Whole exome sequencing has resulted in identification of 49 single
Giaginis, Constantinos; Alexandrou, Paraskevi; Poulaki, Elpida; Delladetsima, Ioanna; Troungos, Constantinos; Patsouris, Efstratios; Theocharis, Stamatios
Ephrin receptors (Ephs) are frequently overexpressed in a wide variety of human malignant tumors, being associated with tumor growth, invasion, angiogenesis and metastasis. The present study aimed to evaluate the clinical significance of EphB4 and EphB6 protein expression in human malignant and benign thyroid lesions. EphB4 and EphB6 protein expression was assessed immunohistochemically on paraffin-embedded thyroid tissues obtained from 127 patients with benign (n = 71) and malignant (n = 56) thyroid lesions. Enhanced EphB4 and EphB6 expression was more frequently observed in malignant compared to benign thyroid lesions (p = 0.0508 and p = 0.0006, respectively). EphB4 and EphB6 expression also provided a distinct discrimination between papillary carcinoma and hyperplastic nodules (p = 0.0302 and p = 0.0013, respectively). In malignant thyroid lesions, enhanced EphB4 expression was significantly associated with larger tumor size (p = 0.0366). Enhanced EphB6 expression was significantly associated with larger tumor size (p = 0.0366), the presence of lymph node metastases (p = 0.0023), the presence of capsular (p = 0.0038), lymphatic (p = 0.0053) and vascular invasion (p = 0.0018) and increased risk of recurrence rate (p = 0.0038). The present study supported evidence that EphB4 and mainly EphB6 may participate in the malignant thyroid transformation, reinforcing their utility as useful biomarkers and possible therapeutic targets in this type of neoplasia.
Berger, K; Wissmann, D; Ihling, C; Kalkhof, S; Beck-Sickinger, A; Sinz, A; Paschke, R; Führer, D
Thyroid tumorigenesis involves qualitative and quantitative changes in protein expression, which can be comprehensively studied by proteome analysis. However, one of the technical bottlenecks of proteomics remains a reliable, sensitive and inexpensive method for quantification of differentially expressed proteins. This is due to the limited linear range of most available protein stains, i.e. silver and Coomassie blue, and high costs of commercially available fluorescent stains. In this paper we describe our experience with a lab-made ruthenium based fluorescent stain (ruthenium II tris(bathophenanthroline disulfonate) (RuBPs)) to perform proteome analysis of nodular thyroid disease. We first compared the properties of RuBPs with two highly sensitive protein stains: (1) silver staining and (2) the commercially available fluorescent dye Sypro Ruby. We show that in addition to its highly sensitive staining capabilities similar to Sypro Ruby and silver (2 ng), RuBPs offers several advantages such as a broad dynamic range (similar to Sypro Ruby and 500 times broader than the dynamic range of silver stain), low costs ( 0.03 per gel) and excellent compatibility with mass spectrometry. We then applied the inexpensive RuBPs stain to 2D gels (pH 4-7) of four benign thyroid nodules and normal thyroid tissue. We were able to detect approximately 1800 protein spots/gel in our thyroid samples. Quantitative changes in protein expression levels of at least 20-42 proteins were noted in the benign nodules compared with the normal thyroid tissue of the same patient. Differentially expressed spots were further characterised by nano-LC-FTICR and MALDI-TOF mass spectrometry. In summary we demonstrate, that the novel fluorescent ruthenium II tris(bathophenanthroline disulfonate) stain is a highly sensitive, reliable and inexpensive tool for quantitative proteome analysis in thyroid nodular disease.
Korkusuz, Y; Kohlhase, K; Gröner, D; Erbelding, C; Luboldt, W; Happel, C; Ahmad, S; Vogl, T J; Gruenwald, F
Purpose: Microwave ablation (MWA) represents a novel thermal ablative treatment of benign thyroid nodules. The aim was to determine the energy required per ml volume reduction in order to match the required energy to the volume-of-interest (VOI). Materials and Methods: 25 patients with 25 nodules (6 solid, 13 complex and 6 cystic) were treated by microwave ablation (MWA). The transmitted energy (E) was correlated with the volume change (∆ V) after 3 months. The energy required per ml volume reduction after 3 months was calculated by E/∆ V. Results: MWA resulted in a significant (p < 0.0001) volume reduction (∆ V) with a mean of 12.4 ± 13.0 ml (range: 1.5 - 63.2 ml) and relative reduction of 52 ± 16 % (range: 22 - 77 %). There was a positive correlation between E and ∆ V (r = 0.82; p < 0.05). The mean E/∆ V was 1.52 ± 1.08 (range: 0.4 - 4.6) kJ/ml for all nodules and 2.30 ± 1.5 (0.9 - 4.6), 1.5 ± 0.9 (0.4 - 3.6), 0.75 ± 0.25 (0.4 - 1.2) kJ/ml, respectively, for solid, complex and cystic nodules with a significant difference in E/∆ V for solid and cystic (p < 0.03). Conclusion: The energy required per volume depends on the nodule consistency. Solid nodules require more energy than cystic ones. The estimation of the energy needed per volume-of-interest as an additional parameter should help to avoid under- or overtreatment. Key Points: • The estimated required energy for a volume-of-interest depends on the nodule consistency• In solid nodules a higher energy transmission than in cystic nodules is recommended• The energy transmission as an additional marker to ultrasound is helpful for improving periprocedural monitoring Citation Format: • Korkusuz Y, Kohlhase K, Gröner D et al. Microwave Ablation of Symptomatic Benign Thyroid Nodules: Energy Requirement per ml Volume Reduction. Fortschr Röntgenstr 2016; 188: 1054 - 1060.
Zhan, Jia; Jin, Jia-Mei; Diao, Xue-Hong; Chen, Yue
Work-up of thyroid nodules remains challenging. Acoustic radiation force impulse imaging (ARFI)-generated shear wave elastography, which can measure quantitatively tissue stiffness (virtual touch tissue quantification) is used as a complement to conventional sonography for improving the diagnosis of thyroid nodules. This meta-analysis was performed to expand on a previous meta-analysis to assess the diagnostic power of ARFI in differentiating benign and malignant thyroid nodules. The MEDLINE, PubMed, SpringerLink databases up to December 31, 2014, were searched. The pooled sensitivity, specificity, and summary receiver operating characteristic curve were obtained from individual studies with a random effects model. Sixteen studies that included a total of 2436 nodules in 2147 patients for ARFI studies were analyzed. The overall mean sensitivity and specificity of ARFI for differentiation of thyroid nodules were 0.80 (95% confidence interval [CI], 0.73-0.87) and 0.85 (95% CI, 0.80-0.90), respectively. A significant heterogeneity was found for both sensitivity and specificity of the different studies (P<0.001). The area under the curve for the ARFI was 0.91. ARFI has high sensitivity and specificity for identification of thyroid. This technique might be useful to select patients with thyroid nodules for surgery. Copyright © 2015. Published by Elsevier Ireland Ltd.
Tian, Wuguo; Hao, Shuai; Gao, Bo; Jiang, Yan; Zhang, Shu; Guo, Lingji; Gu, Lingji; Luo, Donglin
Thyroid nodules are relatively more prevalent in iodine-deficiency area, and the incidence increased sharply in the past decade in these areas. Workup of malignant from benign nodules in clinic was the main problem for managing thyroid nodules.An overall search for the articles about the diagnostic performance of real-time elastography (RTE) and shear wave elastography (SWE) before April 2015 in the databases of PubMed, Embase, and Google scholar. The pooled sensitivity, specificity, and summary receiver operating characteristic (SROC) curve were obtained from individual studies with a random-effects model. Subgroup and meta-regression analysis were also performed.Fifty-six studies involved in 2621 malignant nodules and 7380 benign nodules were contained in our meta-analysis. The pooled sensitivity and specificity of RTE was 83.0% and 81.2%, which is higher than SWE (sensitivity: 78.7%, specificity: 80.5%). The areas under the SROC curve of RTE and SWE were 0.885 and 0.842 respectively. RTE had higher diagnostic value for Caucasians than Asians. Stran ratio (SR) assessment had higher diagnostic performance than elasticity score (ES) system. Similarly, it had higher diagnostic value when malignant nodules were more than 50.In summary, the results revealed that RTE had higher diagnostic performance than SWE in differentiating malignant from benign nodules. However, future international multicenter studies in the region of thyroid risk need to further assess the diagnostic performance of RTE.
Gopinath, Balasubramanian; Shanthi, Natesan
An automated computer-aided diagnosis system is developed to classify benign and malignant thyroid nodules using multi-stained fine needle aspiration biopsy (FNAB) cytological images. In the first phase, the image segmentation is performed to remove the background staining information and retain the appropriate foreground cell objects in cytological images using mathematical morphology and watershed transform segmentation methods. Subsequently, statistical features are extracted using two-level discrete wavelet transform (DWT) decomposition, gray level co-occurrence matrix (GLCM) and Gabor filter based methods. The classifiers k-nearest neighbor (k-NN), Elman neural network (ENN) and support vector machine (SVM) are tested for classifying benign and malignant thyroid nodules. The combination of watershed segmentation, GLCM features and k-NN classifier results a lowest diagnostic accuracy of 60 %. The highest diagnostic accuracy of 93.33 % is achieved by ENN classifier trained with the statistical features extracted by Gabor filter bank from the images segmented by morphology and watershed transform segmentation methods. It is also observed that SVM classifier results its highest diagnostic accuracy of 90 % for DWT and Gabor filter based features along with morphology and watershed transform segmentation methods. The experimental results suggest that the developed system with multi-stained thyroid FNAB images would be useful for identifying thyroid cancer irrespective of staining protocol used.
Jun, Ye Kyeong; Jung, So Lyung; Byun, Ho Kyun; Baek, Jung Hwan; Sung, Jin Yong; Sim, Jung Suk
Eight iatrogenic thyroid pseudoaneurysms (ITPAs) after thyroid biopsy are reported. The mean ITPA diameter was 7.2 mm (range 4 to 12 mm). Ultrasound (US)-guided compression was initially performed at the neck of the ITPA in all cases. Among them, 4 ITPAs persisted (50%) in which radiofrequency (RF) ablation was performed. Mean RF ablation time and power were 13.5 seconds (range 5 to 24 seconds) and 20 W (range 10 to 50 W), respectively. All 4 cases were treated with RF ablation without any complications.
Gao, Shun-Yu; Zhang, Xiao-Yan; Wei, Wei; Li, Xiao-Ting; Li, Yan-Ling; Xu, Min; Sun, Ying-Shi; Zhang, Xiao-Peng
Abstract This study proposed to determine whether in vivo iodine concentration measurement by single-source dual energy (SSDE) CT can improve differentiation between benign and malignant thyroid nodules. In total, 53 patients presenting with thyroid nodules underwent SSDE CT scanning. Iodine concentrations were measured for each nodule and normal thyroid tissue using the GSI-viewer image analysis software. A total of 26 thyroid nodules were malignant in 26 patients and confirmed by surgery; 33 nodules from 27 patients were benign, with 10 confirmed by surgery and others after follow-up. Iodine concentrations with plain CT were significantly lower in malignant than benign nodules (0.47 ± 0.20 vs 1.17 ± 0.38 mg/mL, P = 0.00). Receiver operating characteristic (ROC) curve showed an area under the curve (AUC) of 0.93; with a cutoff of 0.67, iodine concentration showed 92.3% sensitivity and 88.5% specificity in diagnosing malignancy. Iodine concentration obtained by enhanced and plain CT were significantly higher in malignant than benign nodules (9.05 ± 3.35 vs 3.46 ± 2.24 mg/mL, P = 0.00). ROC curve analysis showed an AUC of 0.93; with a cutoff value of 3.37, iodine concentration displayed 78% sensitivity, 95% specificity in diagnosing malignancy. Combining unenhanced with enhanced iodine concentrations, the diagnostic equation was: Y = –8.641 × unenhanced iodine concentration + 0.663 × iodine concentration. ROC curve showed an AUC of 0.98 (95% CI, 0.94, 1.00). With Y ≥ –2 considered malignancy, diagnostic sensitivity and specificity were 96%, 96.3%, respectively. This study concluded that SSDE CT can detect the differences in iodine uptake and blood supply between benign and malignant thyroid lesions. PMID:27684811
Ma, Shuhua; Wu, Xiaomin; Tian, Shuangming; Zhao, Yongfeng
This study aimed to investigate the single-session complete ablation rate of ultrasound-guided percutaneous laser ablation (LA) for benign thyroid nodules. LA was performed in 90 patients with 118 benign thyroid nodules. Contrast-enhanced ultrasound (CEUS) was used to evaluate complete nodule ablation one day after ablation. Thyroid nodule volumes, thyroid functions, clinical symptoms and complications were evaluated 1, 3, 6, 12, and 18 months after ablation. Results showed that all benign thyroid nodules successfully underwent LA. The single-session complete ablation rates for nodules with maximum diameters ≤2 cm, 2-3 cm and ≥3 cm were 93.4%, 70.3% and 61.1%, respectively. All nodule volumes significantly decreased than that one day after ablation (P < 0.05); at the final evaluation, the volume decreased from 6.16 ± 5.21 mL to 0.05 ± 0.01 mL. Thyroid functions did not show significant differences at one month after ablation compared with that before (P > 0.05). Three patients had obvious pain during ablation; one (1.1%) had recurrent laryngeal nerve injury, but the voice returned to normal within 6 months after treatment. Thus, ultrasound-guided LA can effectively inactivate benign thyroid nodules. LA is a potentially viable minimally invasive treatment that offers good cosmetic effects. PMID:27999819
Ma, Shuhua; Zhou, Ping; Wu, Xiaomin; Tian, Shuangming; Zhao, Yongfeng
This study aimed to investigate the single-session complete ablation rate of ultrasound-guided percutaneous laser ablation (LA) for benign thyroid nodules. LA was performed in 90 patients with 118 benign thyroid nodules. Contrast-enhanced ultrasound (CEUS) was used to evaluate complete nodule ablation one day after ablation. Thyroid nodule volumes, thyroid functions, clinical symptoms and complications were evaluated 1, 3, 6, 12, and 18 months after ablation. Results showed that all benign thyroid nodules successfully underwent LA. The single-session complete ablation rates for nodules with maximum diameters ≤2 cm, 2-3 cm and ≥3 cm were 93.4%, 70.3% and 61.1%, respectively. All nodule volumes significantly decreased than that one day after ablation (P < 0.05); at the final evaluation, the volume decreased from 6.16 ± 5.21 mL to 0.05 ± 0.01 mL. Thyroid functions did not show significant differences at one month after ablation compared with that before (P > 0.05). Three patients had obvious pain during ablation; one (1.1%) had recurrent laryngeal nerve injury, but the voice returned to normal within 6 months after treatment. Thus, ultrasound-guided LA can effectively inactivate benign thyroid nodules. LA is a potentially viable minimally invasive treatment that offers good cosmetic effects.
Ott, Johannes; Meusel, Moritz; Schultheis, Andrea; Promberger, Regina; Pallikunnel, Shannon Joan; Neuhold, Nikolaus; Hermann, Michael
The incidence of Hashimoto's thyroiditis (HT) seems to have increased over the last several decades. Since there is a lack of recent studies in the literature that evaluate this phenomenon on a histological basis, we aimed to assess the incidence of lymphocytic thyroid infiltration (LTI) in our large surgical patient collective over a 31-year period. In our study, a total of 1,050 patients who had undergone uni- or bilateral thyroid surgery for benign goiter were included (150 patients in each group, during 1979 to 2009). The stored histological sections of the removed thyroid specimens were re-analyzed, including routine grading of LTI severity on a scale of 0-4, according to Williams and Doniach. Positive correlations were seen for the incidences of LTI grading (0-4) (r = 0.077, p = 0.013) and HT (r = 0.044, p = 0.078) over the years. Furthermore, when comparing the years 1979-1989 and 1994-2009, i.e., before and after the second iodine prophylaxis had been introduced in Austria, a higher incidence of HT was found for the later years (2 out of 450, 0.4%, vs. 6 out of 600, 1.0%, respectively; p < 0.0001). In conclusion, the data demonstrate that the incidence of LTI and HT has increased substantially over the last 31 years.
Huang, Tsung-Chun; Cheng, Yu-Kai; Chen, Tsung-Wei; Hsu, Yung-Chang; Liu, En-Wei
Summary Thyroid cancer with cranial metastasis in a pregnant woman is very rare. In the literature, most cases are diagnosed early from neurogenic signs or symptomatic thyroid gland. Pregnancy also contributes to a hesitation toward early surgical and medical treatments. We reported a scalp tumor in a physically healthy 37-year-old pregnant female with a follicular thyroid carcinoma (FTC) with lung, bone and cranial metastasis in initial presentation. Silent neurogenic and physical examinations make an early diagnosis very challenging. Resection of scalp and intracranial tumor, a thyroidectomy, post-operative radioactive iodine therapy and tyrosine kinase inhibitors were employed as treatment. The scalp tumor was confirmed as a metastatic follicular thyroid carcinoma via positive immunoreactivity for thyroglobulin and thyroid transcription factor 1 in tumor cells. Blood examination revealed an elevated thyroglobulin level (>5335 ng/mL). The patient was discharged without any neurological deficit. An asymptomatic scalp tumor in a pregnant woman with a normal thyroid disease history needs differential diagnosis from intracranial origin. Rapid progression and an elevated thyroglobulin level are the indicators that further image study is needed. Aggressive surgical excision of resectable thyroid gland and metastatic tumor are essential for a longer survival rate. There is nothing to indicate that a post-partum operation will worsen prognosis. Learning points: Follicular thyroid cancer with cranial metastasis in initial presentation can be asymptomatic. Follicular thyroid cancer with cranial metastasis in a pregnant woman can be treated after delivery. Rapid enlargement of scalp tumor is indicated for further image study even in a patient without any neurological deficit. PMID:28203373
Kuppersmith, Ronald B; Holsinger, F Christopher
To review the initial experience of gasless transaxillary robot-assisted endoscopic thyroid surgery in a series of patients and describe modifications of the technique for the North American patients, selection criteria, and other issues related to this technology. Retrospective review of the first 31 consecutive cases at a single institution. Thirty-one patients underwent robotic thyroid surgery. Twenty thyroid lobectomies and 11 total thyroidectomies were performed. Improvements in the length of time to perform components of the procedure were noted from the early group of cases to later group of cases. No major or permanent complications occurred. Robotic thyroid surgery is feasible in North American patients and can be safely performed. The procedure has potential complications and a definite learning curve exists for both surgeons and operating room staff. Training methods need to be validated to ensure safe adoption. More studies need to be performed to further evaluate the relative benefits of this technique. Copyright © 2010 The American Laryngological, Rhinological, and Otological Society, Inc.
Clinckspoor, Isabelle; Hauben, Esther; Verlinden, Lieve; Van den Bruel, Annick; Vanwalleghem, Lieve; Vander Poorten, Vincent; Delaere, Pierre; Mathieu, Chantal; Verstuyf, Annemieke
1,25-DihydroxyvitaminD3 (1,25(OH)2D3), the active form of vitamin D, mediates antitumor effects in various cancers. The expression of key players in vitamin D signaling in thyroid tumors was investigated. Vitamin D receptor (VDR) and CYP27B1 and CYP24A1 (respectively activating and catabolizing vitamin D) expression was studied (RT-PCR, immunohistochemistry) in normal thyroid, follicular adenoma (FA), differentiated thyroid cancer (DTC) consisting of the papillary (PTC) and follicular (FTC) subtype, and anaplastic thyroid cancer (ATC). VDR, CYP27B1, and CYP24A1 expression was increased in FA and DTC compared with normal thyroid. However, in PTC with lymph node metastasis, VDR and CYP24A1 were decreased compared with non-metastasized PTC. In ATC, VDR expression was often lost, whereas CYP27B1/CYP24A1 expression was comparable to DTC. Moreover, ATC with high Ki67 expression (>30%) or distant metastases at diagnosis was characterized by more negative VDR/CYP24A1/CYP27B1 staining. In conclusion, increased expression of key players involved in local 1,25(OH)2D3 signaling was demonstrated in benign and differentiated malignant thyroid tumors, but a decrease was observed for local nodal and especially distant metastasis, suggesting a local antitumor response of 1,25(OH)2D3 in early cancer stages. These findings advocate further studies with 1,25(OH)2D3 and analogs in persistent and recurrent iodine-refractory DTC. PMID:22511602
Dobyns, B M; Hyrmer, B A
On March 1, 1954, a serious fallout accident occurred during the United States atomic testing program at Bikini in the Trust Territory of the Pacific Islands. Following the detonation of a large thermonuclear device (known as Bravo) an unexpected shift in winds resulted in deposition of radioactive debris on several inhabited atolls in the Marshall Islands. During the early post-detonation period military, sea, and air surveys traced the hottest portion of the parabolic cloud as it drifted in an ever widening pattern of diminishing concentration eastward and southeast of Bikini. The center of the cloud passed North of the Rongelap Atoll, which was the nearest inhabited atoll. This report concerns the development of thyroid lesions, the special circumstances encountered during thyroid surgery, and the results of the surgical management of benign and malignant lesions that were subsequently encountered in this population.
Zurawa-Janicka, Dorota; Kobiela, Jarosław; Galczynska, Natalia; Stefaniak, Tomasz; Lipinska, Barbara; Lachinski, Andrzej; Skorko-Glonek, Joanna; Narkiewicz, Joanna; Proczko-Markuszewska, Monika; Sledzinski, Zbigniew
Human HtrA proteins are serine proteases involved in essential physiological processes. HtrA1 and HtrA3 function as tumor suppressors and inhibitors of the TGF-β signaling pathway. HtrA2 regulates mitochondrial homeostasis and plays a pivotal role in the induction of apoptosis. The aim of the study was to determine whether the HtrA proteins are involved in thyroid carcinogenesis. We used the immunoblotting technique to estimate protein levels of HtrA1, HtrA2, long and short variants of HtrA3 (HtrA3-L and HtrA3-S) and TGF-β1 in tissues of benign and malignant thyroid lesions, and control groups. We found that the levels of HtrA2 and HtrA3-S were higher in thyroid malignant tumors compared to normal tissues and benign tumors. The HtrA3-L level was increased in malignant tumor tissues compared to benign tumor tissues and control tissues from patients with benign lesions, and elevated in normal tissues from patients with thyroid carcinoma compared to normal tissues from patients with benign lesions. We also compared levels of HtrA proteins in follicular thyroid carcinoma (FTC) and papillary thyroid carcinoma (PTC) and found that these types of carcinoma differed in the expression of HtrA3-S and HtrA1. These results indicate the implication of HtrA proteins in thyroid carcinogenesis suggest that HtrA3 variants may play different roles in cancer development, and that the increased HtrA3-L levels in thyroid tissue could be correlated with the development of malignant lesions. The TGF-β1 levels in tumor tissues were not significantly altered compared to control tissues.
Cai, Liang-Liang; Liu, Guo-Yan; Tzeng, Chi-Meng
Abstract Background: During development, methylation permanently changes gene activity, while aberrant gene methylation is key to human tumorigenesis. Gene methylation is an epigenetic event leading to gene silencing and some tumor suppressor genes that are aberrantly methylated in both thyroid cancer and benign thyroid tumor, suggesting a role for methylation in early thyroid tumorigenesis. Specific gene methylation occurs in certain types of thyroid cancer and depends on particular signaling pathways. Most reports rely on data from varied samples that vary tremendously with respect to methylation. Results: We observed that hyperplastic/malignant (H/M) thyroid tissue and benign/manligant (B/M) tissue had the most profoundly methylated loci compared to hyperplastic/benign (H/B) tissue. These loci are mapped to 863 genes (|Δβ value| > 0.15) in B/M and 1082 genes (|Δβ value| > 0.15) in H/M. After bioinformatic analysis, these genes were found to be involved in T-cell receptor signaling pathway (B/M) and Jak–Stat signaling pathways (H/M). Conclusion: Our study offers the most comprehensive DNA methylation data for thyroid disease to date, using 1 patient with 3 tissue types and high-resolution 450K arrays. Our data may lay the foundation for future identification of novel epigenetic targets or diagnosis of thyroid cancer. PMID:27583899
Brose, Marcia S; Smit, Jan Wa; Lin, Chia-Chi; Pitoia, Fabian; Fellous, Marc; DeSanctis, Yoriko; Schlumberger, Martin; Tori, Masayuki; Sugitani, Iwao
There are limited treatment options for patients with radioactive iodine-refractory, progressive differentiated thyroid cancer. Although there is consensus that multikinase inhibitor therapy should be considered in patients with progressive disease with considerable tumor load or symptomatic disease, uncertainty exists on the optimal timing to treat with a multikinase inhibitor, especially for asymptomatic patients. RIFTOS MKI is an international, prospective, open-label, multicenter, noninterventional study with the primary objective to compare the time to symptomatic progression from study entry in asymptomatic patients with radioactive iodine -refractory, progressive differentiated thyroid cancer for whom there is a decision to initiate multikinase inhibitors at study entry (cohort 1) with those for whom there is a decision to not initiate multikinase inhibitors at study entry (cohort 2). Secondary endpoints are overall survival and progression-free survival, which will be compared between cohorts 1 and 2. Additional secondary endpoints are postprogression survival from time of symptomatic progression, duration of and response to each systemic treatment regimen, and dosing of sorafenib throughout the treatment period. Asymptomatic, multikinase inhibitor-naive patients aged ≥18 years with histologically/cytologically documented differentiated thyroid cancer that is radioactive iodine-refractory are eligible. Patients may receive any therapy for differentiated thyroid cancer, including sorafenib or other multikinase inhibitors if indicated and decided on by the treating physician. In total, 700 patients are estimated to be enrolled from >20 countries. Final analysis will be performed once the last enrolled patient has been followed up with for 24 months. (ClinicalTrials.gov identifier: NCT02303444).
Choi, Young Jun; Baek, Jung Hwan; Park, Hye Sun; Shim, Woo Hyun; Kim, Tae Yong; Shong, Young Kee; Lee, Jeong Hyun
An initial clinical assessment is described of a new, commercially available, computer-aided diagnosis (CAD) system using artificial intelligence (AI) for thyroid ultrasound, and its performance is evaluated in the diagnosis of malignant thyroid nodules and categorization of nodule characteristics. Patients with thyroid nodules with decisive diagnosis, whether benign or malignant, were consecutively enrolled from November 2015 to February 2016. An experienced radiologist reviewed the ultrasound image characteristics of the thyroid nodules, while another radiologist assessed the same thyroid nodules using the CAD system, providing ultrasound characteristics and a diagnosis of whether nodules were benign or malignant. The diagnostic performance and agreement of US characteristics between the experienced radiologist and the CAD system were compared. In total, 102 thyroid nodules from 89 patients were included; 59 (57.8%) were benign and 43 (42.2%) were malignant. The CAD system showed a similar sensitivity as the experienced radiologist (90.7% vs. 88.4%, p > 0.99), but a lower specificity and a lower area under the receiver operating characteristic (AUROC) curve (specificity: 74.6% vs. 94.9%, p = 0.002; AUROC: 0.83 vs. 0.92, p = 0.021). Classifications of the ultrasound characteristics (composition, orientation, echogenicity, and spongiform) between radiologist and CAD system were in substantial agreement (κ = 0.659, 0.740, 0.733, and 0.658, respectively), while the margin showed a fair agreement (κ = 0.239). The sensitivity of the CAD system using AI for malignant thyroid nodules was as good as that of the experienced radiologist, while specificity and accuracy were lower than those of the experienced radiologist. The CAD system showed an acceptable agreement with the experienced radiologist for characterization of thyroid nodules.
Finn, S. P.; Smyth, P.; Cahill, S.; Streck, C.; O’Regan, E. M.; Flavin, R.; Sherlock, J.; Howells, D.; Henfrey, R.; Cullen, M.; Toner, M.; Timon, C.; O’Leary, J. J.
The most common sub-variant of papillary thyroid carcinoma (PTC) is the so-called follicular variant (FVPTC), which is a particularly problematic lesion and can be challenging from a diagnostic viewpoint even in resected lesions. Although fine needle aspiration cytology is very useful in the diagnosis of PTC, its accuracy and utility would be greatly facilitated by the development of specific markers for PTC and its common variants. We used the recently developed Applied Biosystems 1700 microarray system to interrogate a series of 11 benign thyroid lesions and conditions and 14 samples of PTC (six with classic morphology and eight with follicular variant morphology). TaqMan® reverse transcriptase-polymerase chain reaction was used to validate the expression portfolios of 50 selected transcripts. Our data corroborates potential biomarkers previously identified in the literature, such as LGALS3, S100A11, LYN, BAX, and cluster of differentiation 44 (CD44). However, we have also identified numerous transcripts never previously implicated in thyroid carcinogenesis, and many of which are not represented on other microarray platforms. Diminished expression of metallothioneins featured strongly among these and suggests a possible role for this family as tumour suppressors in PTC. Fifteen transcripts were significantly associated with FVPTC morphology. Surprisingly, these genes were associated with an extremely narrow repertoire of functions, including the major histocompatibility complex and cathepsin families. PMID:17252232
Kaserer, Klaus; Knezevic, Vladimir; Pichlhöfer, Bettina; Scheuba, Christian; Passler, Christian; Worth, Jennifer; Niederle, Bruno; Krizman, David
cDNA libraries were constructed from thyroid epithelial cells gained by laser capture microdissection for gene expression analysis of the progression of thyroid cancer. Six histologically diverse thyroid tissue specimens were used. A mean of 93 ng of total RNA was gained per tissue sample from a mean estimated number of 25,000 microdissected cells per sample. Analysis of randomly selected clones from six libraries showed an average insert size of 600 (range, 300-1500) bp. Preliminary sequencing of clones selected from the six libraries indicates a range of 46% to 62% known genes per library, 4% to 25% anonymous expressed sequence tags per library, and 15% to 43% novel expressed sequence tags per library. Thyroglobulin was found in normal thyroid epithelium and follicular thyroid adenoma, whereas calcitonin precursor transcripts were found in medullary thyroid carcinoma. We demonstrate production of high-quality cDNA libraries of microdissected tissue of the thyroid, which should prove useful for gene expression analysis of human thyroid tumors.
Guidoum, Mona; Kherfi-Kadi, Hind; Benharkat-Boughaba, Ouahiba; Djemaa-Bendjazia, Aicha; Keghouche, Sihem; Abedi-Ardekani, Behnoush; Azzouz, Amina; Kadi, Yacine; Hainaut, Pierre; Bouslama, Zihad
The aim of this study is to compare histological patterns and to estimate the burden of thyroid cancers in the two Wilayahs (departments) of El-Taref and Guelma in northeast of Algeria (total population 0.9 million), locally reputed as having different rates of endemic thyroid diseases and cancer. A retrospective analysis of central pathology registers and clinical records of patients with thyroid diseases, covering the period 2008–2012, was conducted. A total of 145 cases of thyroid cancers with histological confirmation were registered in the two Wilayahs during the period, with a female to male ratio of 5.9 : 1. Estimates of crude incidence rates suggested that thyroid cancers were twice as frequent in the Wilayah of Guelma compared to El-Taref (p < 0.05) with a tendency to occur at a younger age in resident of the Wilayah of El-Taref. Diagnoses of thyroid adenoma were more frequent in the Wilayah of Guelma, whereas the prevalence of other thyroid lesions, including goitre, was similar in the two Wilayahs. This first descriptive study on geographic variations in thyroid cancer in Northern Africa suggests that significant differences may occur in relation with environmental and lifestyle exposures. PMID:26681943
Li, Zuanfang; Li, Chao; Lin, Duo; Huang, Zufang; Pan, Jianji; Chen, Guannan; Lin, Juqiang; Liu, Nenrong; Yu, Yun; Feng, Shangyuan; Chen, Rong
The aim of this study was to evaluate the potential of applying silver nano-particle based surface-enhanced Raman scattering (SERS) to discriminate different types of human thyroid tissues. SERS measurements were performed on three groups of tissue samples including thyroid cancers (n = 32), nodular goiters (n = 20) and normal thyroid tissues (n = 25). Tentative assignments of the measured tissue SERS spectra suggest interesting cancer specific biomolecular differences. The principal component analysis (PCA) and linear discriminate analysis (LDA) together with the leave-one-out, cross-validated technique yielded diagnostic sensitivities of 92%, 75% and 87.5%; and specificities of 82.6%, 89.4% and 84.4%, respectively, for differentiation among normal, nodular and malignant thyroid tissue samples. This work demonstrates that tissue SERS spectroscopy associated with multivariate analysis diagnostic algorithms has great potential for detection of thyroid cancer at the molecular level.
Quantitative evaluation of contrast-enhanced ultrasound after intravenous administration of a microbubble contrast agent for differentiation of benign and malignant thyroid nodules: assessment of diagnostic accuracy.
Nemec, Ursula; Nemec, Stefan F; Novotny, Clemens; Weber, Michael; Czerny, Christian; Krestan, Christian R
To investigate the diagnostic accuracy, through quantitative analysis, of contrast-enhanced ultrasound (CEUS), using a microbubble contrast agent, in the differentiation of thyroid nodules. This prospective study enrolled 46 patients with solitary, scintigraphically non-functional thyroid nodules. These patients were scheduled for surgery and underwent preoperative CEUS with pulse-inversion harmonic imaging after intravenous microbubble contrast medium administration. Using histology as a standard of reference, time-intensity curves of benign and malignant nodules were compared by means of peak enhancement and wash-out enhancement relative to the baseline intensity using a mixed model ANOVA. ROC analysis was performed to assess the diagnostic accuracy in the differentiation of benign and malignant nodules on CEUS. The complete CEUS data of 42 patients (31/42 [73.8%] benign and 11/42 [26.2%] malignant nodules) revealed a significant difference (P < 0.001) in enhancement between benign and malignant nodules. Furthermore, based on ROC analysis, CEUS demonstrated sensitivity of 76.9%, specificity of 84.8% and accuracy of 82.6%. Quantitative analysis of CEUS using a microbubble contrast agent allows the differentiation of benign and malignant thyroid nodules and may potentially serve, in addition to grey-scale and Doppler ultrasound, as an adjunctive tool in the assessment of patients with thyroid nodules. • Contrast-enhanced ultrasound (CEUS) helps differentiate between benign and malignant thyroid nodules. • Quantitative CEUS analysis yields sensitivity of 76.9% and specificity of 84.8%. • CEUS may be a potentially useful adjunct in assessing thyroid nodules.
Longo, Marcella; Cassoli, Ing Paolo; Fugazzola, Laura; Vannucchi, Guia; Lanzoni, Monica; Castaldi, Silvana
Numerous scientific publications have confirmed that percutaneous laser thermal ablation (LTA) represents a possible therapeutic option in selected patients with benign thyroid nodules. A study was carried out to evaluate the feasibility of adopting the LTA technique to treat benign thyroid nodules in a teaching and research hospital in northern Italy. A cost analysis from a company's perspective determined the impact of adoption of the new technique on the overall Hospital budget, considering currently available equipment, infrastructure and personnel, equipment costs and treatment tariffs. The cost analysis shows that, strictly from an economic point of view, any provision of the LTA technique will result as a loss on the Hospital's balance sheet. However, it does not estimate the extent of the impact on the overall budget because it did not evaluate the savings that such a technique would make with respect to alternative therapeutic treatments. Therefore, the Hospital policy management decided to extend the current agreement with a private authorized health care structure that already carries out LTA. Also, although difficult to express in economic terms, this new technique would undoubtedly raise the profile and enhance the reputation of the Hospital. Using the new technique in these patients could cut costs for the entire regional health care system, widen the experience of the Hospital's endocrinology team and offer the potential for the procedure also to be provided by operators on a freelance basis within the Hospital. © 2014 John Wiley & Sons, Ltd.
Zhang, Yi-Feng; He, Yong; Xu, Hui-Xiong; Xu, Xiao-Hong; Liu, Chang; Guo, Le-Hang; Liu, Lin-Na; Xu, Jun-Mei
Objectives- Acoustic radiation force impulse elastography is a newly developed ultrasound elasticity imaging technique that included both Virtual Touch tissue quantification and Virtual Touch tissue imaging (VTI; Siemens Medical Solutions, Mountain View, CA). This study aimed to evaluate the usefulness of VTI in differentiating malignant from benign thyroid nodules. Methods- This study included 192 consecutive patients with thyroid nodules (n = 219) who underwent surgery for compressive symptoms or suspicion of malignancy. Tissue stiffness on VTI elastography was scored from 1 (soft) to 6 (hard). The VTI scores between malignant and benign thyroid nodules were compared. The intraobserver and interobserver agreement for VTI elastography was also assessed. Results- On VTI elastography: score 1 was found in 84 nodules (all benign); score 2 in 37 nodules (3 papillary carcinomas and 34 benign nodules); score 3 in 25 nodules (1 medullary carcinoma, 6 papillary carcinomas, and 18 benign nodules); score 4 in 53 nodules (50 papillary carcinomas and 3 benign nodules); score 5 in 17 nodules (14 papillary carcinomas and 3 benign nodules); and score 6 in 3 nodules (all papillary carcinomas). A VTI elasticity score of 4 or greater was highly predictive of malignancy (P< .01), and the sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were 87.0% (67 of 77), 95.8% (136 of 142), 91.8% (67 of 73), 93.1% (136 of 146), and 92.7% (203 of 219), respectively. The κ values were 0.69 for intraobserver agreement and 0.85 for interobserver agreement. Conclusions- Virtual Touch tissue elasticity imaging has great potential as an adjunctive tool combined with conventional sonography for differential diagnosis between benign and malignant thyroid nodules.
Rossi, E D; Bizzarro, T; Fadda, G; Pontecorvi, A; Bernet, V; Nassar, A
In fine needle aspiration cytology (FNAC), the category of benign thyroid lesions (BTL), which constitutes 65-70% of all thyroid FNAC, and can be correctly diagnosed by morphology alone, is an important entity. A diagnosis of BTL denotes a lesion managed with follow-up unless found in conjunction with compressive symptoms. Although this diagnosis can be quite simple, there are cases in which the scant cellular or colloid component may pose diagnostic issues. Herein, we describe the experiences of evaluating BTL at two large academic institutions. We evaluated the clinical importance of a correct diagnosis of BTL to define the exact inherent risk of a false-negative result (FNR). From January 2008 through to June 2013, 506 (3.6%) out of 15 850 patients with BTL underwent surgery. All nodules were sampled under sonographic guidance (US) and processed either with liquid-based cytology (LBC), Diff-Quik® smears or alcohol-Papanicolaou staining methods. The histological follow-up of 506 BTL series included 493 benign and 13 malignant lesions. The latter group included four follicular carcinomas (FC), two classic variants of papillary thyroid carcinoma (PTC), one macrofollicular PTC and six follicular variants of PTC (FVPC). The malignancy rate for the BTL category was 2.5%. When diagnosed by expert cytopathologists, BTL represents a robust diagnosis and might reduce the number of FNR. Additional diagnostic experience and a large case series could enable cytopathologists to recognise all the morphological entities of BTL. An important additional aid is the extensive sampling of the lesions to reduce issues related to a low cellularity. © 2015 John Wiley & Sons Ltd.
Wendl, C M; Janke, M; Jung, W; Stroszczysnski, C; Jung, E M
The aim of our study was to evaluate, whether the analysis of time intensity curves (TIC) of contrast enhanced ultrasound (CEUS) could help to differentiate between thyroid adenomas and carcinomas in daily clinical routine.B-mode, Colour Coded Doppler Sonography (CCDS), Power Doppler (PD) and CEUS were applied for 50 patients (27 men, 23 women; mean age 51 years, range 16-81 years).CEUS cine-sequences were analysed using time intensity curves (TIC) and calculating time to peak (TTP) as well as the area under the curve (AUC).All 20 patients with carcinomas presented with a complete wash-out in the late phase of CEUS while this occurred only in three out of the 30 patients with adenomas.Marked differences were observed between adenomas and carcinomas concerning the mean AUC in the surrounding thyroid tissue (p = 0.041). In addition, TTP differed clearly between the centre and the surrounding of the carcinomas (p < 0.05) as well as between TTP in the border area and the surrounding tissue (p = 0.01). CEUS in combination with TIC analysis allows a dynamic evaluation of the microvascularisation of thyroid nodules and is helpful for the differentiation of benign and malignant nodules.
Molinari, Filippo; Mantovani, Alice; Deandrea, Maurilio; Limone, Paolo; Garberoglio, Roberto; Suri, Jasjit S.
High-resolution ultrasonography (HRUS) has potentialities in differential diagnosis between malignant and benign thyroid lesions, but interpretative pitfalls remain and accuracy is still poor. We developed an image processing technique for characterizing the intra-nodular vascularization of thyroid lesions. Twenty nodules (ten malignant) were analyzed by 3-D contrast-enhanced ultrasound imaging. The 3-D volumes were preprocessed and skeletonized. Seven vascular parameters were computed on the skeletons: number of vascular trees (NT); vascular density (VD); number of branching nodes (or branching points) (NB); mean vessel radius (MR); 2-D (DM) and 3-D (SOAM) tortuosity; and inflection count metric (ICM). Results showed that the malignant nodules had higher values of NT (83.1 vs. 18.1), VD (00.4 vs. 0.01), NB (1453 vs. 552), DM (51 vs. 18), ICM (19.9 vs. 8.7), and SOAM (26 vs. 11). Quantification of nodular vascularization based on 3-D contrast-enhanced ultrasound and skeletonization could help differential diagnosis of thyroid lesions.
Rundle, Andrew; Jankowski, Michelle; Kryvenko, Oleksandr N; Tang, Deliang; Rybicki, Benjamin A
In general population studies, obesity has been associated with risk of high-grade prostate cancer, but little is known about obesity and future prostate cancer risk among men with an initial benign biopsy of the prostate; a high-risk population. Within a cohort of 6,692 men followed up after a biopsy or transurethral resection of the prostate (TURP) with benign findings, a nested case-control study was conducted of 494 prostate cancer cases and controls matched on age, race, follow-up duration, biopsy versus TURP and date of procedure. Body mass index at the time of the initial procedure was abstracted from medical records, and initial biopsy specimens were reviewed for the presence of prostatic intraepithelial neoplasia (PIN). Obesity was associated with the presence of PIN in the initial benign specimen [OR = 2.15; 95% confidence interval (CI) 1.13-4.11]. After adjustment for the matching variables, family history of prostate cancer, prostate-specific antigen (PSA) levels at the initial procedure, the number of PSA tests and digital rectal examinations during follow-up, obesity (OR = 1.57; 95% CI, 1.07-2.30) at the time of the initial procedure was associated with prostate cancer incidence during follow-up. Risk associated with obesity was confined to cases with follow-up less than 1,538 days, the median duration of follow-up among cases (OR = 1.95; 95% CI, 1.09-3.48). Obesity is associated with the presence of PIN in benign specimens and with future prostate cancer risk after an initial benign finding. Obesity may be a factor to consider when planning clinical follow-up after a benign biopsy.
Lang, Brian H H; Woo, Yu Cho; Chiu, Keith W H
Given that high-intensity focussed ultrasound (HIFU) of benign thyroid nodules often causes a massive release of thyroglobulin (Tg) into the circulation, we hypothesised a greater initial Tg rise may result in a greater nodule shrinkage 6 months after ablation. One hundred and five patients who underwent HIFU for symptomatic benign thyroid nodule from 2015 to 2016 were analysed. Serum Tg and anti-Tg autoantibody were checked on treatment day (baseline) and 4 d after treatment. The % of Tg rise = [serum Tg on day-4 - baseline serum Tg]/[baseline serum Tg] * 100 while the nodule shrinkage as measured by volume reduction ratio (VRR) = [baseline volume - volume at 6-month]/[baseline volume] * 100. Treatment success was defined as VRR >50%. At 6-month, the mean VRR was 62.2 ± 25.0% and 59 (76.6%) patients had treatment success. The mean baseline Tg level increased from 292.8 ± 672.7 ng/mL to 2022.7 ± 1759.8 ng/mL in the first-week. The % of Tg rise did not significantly correlate with either 3-month or 6-month VRR (p = 0.920 and p = 0.699, respectively). The mean % of Tg rise in the first week was not different between those with and without 6-month treatment success (368.2% vs. 1068.7%, p = 0.381). No clinical factors significantly correlated with treatment success. There was an almost seven-fold increase in the mean Tg level 4 d after HIFU ablation. The % of Tg rise in the first week did not appear to correlate with the 6-month nodule shrinkage or treatment success.
Wong, Kai-Pun; Lang, Brian Hung-Hin
Successful thermal ablation using radiofrequency has been reported in various tumors including liver or kidney tumors. Nonsurgical minimally invasive ablative therapy such as radiofrequency ablation (RFA) has been reported to be a safe and efficient treatment option in managing symptomatic cold thyroid nodules or hyperfunctioning thyroid nodules. Pressure and cosmetic symptoms have been shown to be significantly improved both in the short and long terms after RFA. For hyperfunctioning thyroid nodules, RFA is indicated for whom surgery or radioiodine are not indicated or ineffective or for those who refuse surgery or radio-iodine. Improvement of thyroid function with decreased need for antithyroid medications has been reported. Complication rate is relatively low. By reviewing the current literature, we reported its efficacy and complications and compared the efficacy of RFA relative to other ablative options such as ethanol ablation and laser ablation.
Dwivedi, Smriti Sudhanshu; Joshi, Avinash R; Kulkarni, Maithili Mandar; Bhayekar, Pallavi; Jadhav, Amruta; Nayar, Musphera; Kambale, Neelam S
Introduction Solitary Thyroid Nodule (STN) has provoked increased concern owing to higher incidence of malignancy. The inter and intra observer variation in the histomorphological diagnosis of Papillary Thyroid Carcinomas (PTC) may sometimes pose a diagnostic difficulty. Aim This study was undertaken to analyse immunohistochemical (IHC) markers (CK-19, CD-56, p53, Ki-67) to differentiate between benign and malignant surgically resected STN along with their utility in the identification of PTC. Materials and Methods The present cross sectional study was conducted over a period of 4 years. A technique of manual tissue array was employed for cases subjected to IHC. The primary antibodies used were CK-19, CD-56, p53 and Ki-67. Analysis of the expression of IHC markers (p53, Ki-67) to distinguish between benign and malignant STN was done. Evaluation and correlation of expression of IHC markers (CK-19, CD-56) to determine its utility in reaching definitive diagnosis and assessing prognosis of PTC was tried. Results were subjected to statistical analysis. The results were considered to be significant when the p-value <0.05. Results Out of the 160 cases of surgically resected STN specimens, 68 cases were non-neoplastic, 24 cases were benign and 68 cases were of malignant tumours (7 cases of follicular carcinoma (FCa), 61 cases of PTC). CK-19 was found to be a sensitive (83.61%) and a highly specific positive marker (100%) for the diagnosis of PTC. The difference in CD-56 expression between PTC and non-PTC group was found to be highly statistically significant. CD-56 was found to be a sensitive (85.86%) and specific (82.25%) negative marker in differentiating PTC from follicular lesions/neoplasms. The difference in p53 expression between the malignant and non-malignant STN cases was found to be highly statistically significant with a sensitivity and specificity 85.29% and 70.65% respectively. The statistical difference in mean Ki-67 Labeling Index (LI) was found to be
Kimura, Yuko; Hayashida, Naomi; Takahashi, Jumpei; Rafalsky, Ruslan; Saiko, Alexsey; Gutevich, Alexander; Chorniy, Sergiy; Kudo, Takashi; Takamura, Noboru
Background. The Chernobyl Nuclear Power Plant (CNPP) accident exposed a large number of inhabitants to internal (131)I radiation. The associations between internal (131)I exposure and thyroid autoimmunity and benign thyroid diseases remain controversial in the population living in the contaminated area around the CNNP. In this study, we evaluate the association of (131)I with benign thyroid diseases. Methods. We compared the prevalence of Anti-Thyroid Autoantibodies (ATAs), thyroid function, and prevalence of thyroid ultrasound finding outcomes in 300 residents of the contaminated area of Ukraine who were 0-5 years of age at the time of the CNPP accident (group 1) and 300 sex-matched residents who were born after the accident (group 2). Results. We did not find any differences of the prevalence of Antithyroglobulin Antibodies (TGAb) positive, Antithyroid Peroxidase Antibodies (TPOAb) positive, and TGAb and/or TPOAb positive between the study groups. (11.7% vs 10.3%; p = 0.602, 17.3% vs 13.0%; p = 0.136, 21.0% vs 17.3%; p = 0.254, respectively); after adjusting for age and sex, the prevalence was not associated with the (131)I exposure status in the study groups. The prevalence of subclinical and overt hypothyroidism cases was not significantly different (p = 0.093 and p = 0.320) in the two groups, nor was the prevalence of goiter (p = 0.482). On the other hand, the prevalence of nodules was significantly higher in group 1 (p = 0.003), though not significantly so after adjustment for age and sex. Discussion. Working 26-27 years after the CNNP accident, we found no increased prevalence of ATAs or benign thyroid diseases in young adults exposed to (131)I fallout during early childhood in the contaminated area of Ukraine. Long-term follow-up is needed to clarify the effects of radiation exposure on autoimmunity reaction in the thyroid.
Kimura, Yuko; Hayashida, Naomi; Takahashi, Jumpei; Rafalsky, Ruslan; Saiko, Alexsey; Gutevich, Alexander; Chorniy, Sergiy; Kudo, Takashi
Background. The Chernobyl Nuclear Power Plant (CNPP) accident exposed a large number of inhabitants to internal 131I radiation. The associations between internal 131I exposure and thyroid autoimmunity and benign thyroid diseases remain controversial in the population living in the contaminated area around the CNNP. In this study, we evaluate the association of 131I with benign thyroid diseases. Methods. We compared the prevalence of Anti-Thyroid Autoantibodies (ATAs), thyroid function, and prevalence of thyroid ultrasound finding outcomes in 300 residents of the contaminated area of Ukraine who were 0–5 years of age at the time of the CNPP accident (group 1) and 300 sex-matched residents who were born after the accident (group 2). Results. We did not find any differences of the prevalence of Antithyroglobulin Antibodies (TGAb) positive, Antithyroid Peroxidase Antibodies (TPOAb) positive, and TGAb and/or TPOAb positive between the study groups. (11.7% vs 10.3%; p = 0.602, 17.3% vs 13.0%; p = 0.136, 21.0% vs 17.3%; p = 0.254, respectively); after adjusting for age and sex, the prevalence was not associated with the 131I exposure status in the study groups. The prevalence of subclinical and overt hypothyroidism cases was not significantly different (p = 0.093 and p = 0.320) in the two groups, nor was the prevalence of goiter (p = 0.482). On the other hand, the prevalence of nodules was significantly higher in group 1 (p = 0.003), though not significantly so after adjustment for age and sex. Discussion. Working 26–27 years after the CNNP accident, we found no increased prevalence of ATAs or benign thyroid diseases in young adults exposed to 131I fallout during early childhood in the contaminated area of Ukraine. Long-term follow-up is needed to clarify the effects of radiation exposure on autoimmunity reaction in the thyroid. PMID:27019779
Srinivas, M Naren Satya; Amogh, V N; Gautam, Munnangi Satya; Prathyusha, Ivvala Sai; Vikram, N R; Retnam, M Kamala; Balakrishna, B V; Kudva, Narendranath
Objectives: To evaluate diagnostic reliability of the daily use of thyroid imaging reporting and data system (TIRADS) classification proposed by Kwak et al., in differentiating between a benign and a malignant thyroid lesion, to calculate inter-observer variability in the interpretation of each of the TIRADS ultrasound features and to evaluate role of TIRADS system in reducing unnecessary biopsies of benign lesions. Materials and Methods: Three hundred and sixty-five patients with clinically suspected thyroid lesions during the period from November 1, 2011, to August 31, 2015, were prospectively scanned on gray-scale and Doppler imaging by six radiologists separately. We used GE VOLUSON 730 PRO machine (GE healthcare, Milwaukee, USA) equipped with a 7.5–12 MHz high-frequency linear array transducer with color and power Doppler capability. We evaluated five sonological features: Internal composition, echogenicity, margins, presence and type of calcification, and shape of the lesion. Based on the TIRADS proposed by Kwak et al., we determined categories of the thyroid lesions. The diagnostic performance of TIRADS classification system was evaluated by comparison with the fine-needle aspiration cytology (FNAC) reports which were subsequently obtained after taking informed consent from the patients. All follicular neoplasms on FNAC were further followed up with excision biopsy and histology. The cytopathological report was used as the standard final diagnosis for comparison. The P value and odds ratio were determined to quantify how strongly the presence or absence of a particular ultrasound feature was associated with benignity or malignancy in the study population. The risk of malignancy was stratified for each TIRADS category-based on the total number of benign and malignant lesions in that category. Cervical lymph nodes were also evaluated for their size, loss of the central, echogenic hilum, presence of irregular and indistinct margin, microcalcification, and
Raggiunti, B; Capone, F; Franchi, A; Fiore, G; Filipponi, S; Colagrande, V; Di Nicola, M; Mangifesta, R; Ballone, E
Ultrasoundelastography (USE) is a new imaging technique that is performed with a normal ultrasound transducer. It provides improved characterization of a tissue or nodule based on the latter's elasticity and stiffness. The aim of the present, prospective study was to assess the validity of USE in characterizing thyroid nodules. USE patterns were analyzed in light of nodule cytology (British Thyroid Association classification) to determine whether these patterns can be used to decide whether or not fine-needle aspiration cytology (FNAC) is indicated. We examined a consecutive series of 617 thyroid nodules in patients referred for the first time to the Endocrinology Unit of Atri Hospital (Atri, [TE]). Patients underwent ultrasonographic and USE examinations of their thyroid nodules, which were then subjected to FNAC. All nodules with Thy 1 cytology were excluded, leaving 567 nodules for analysis. USE findings were classified on the basis of the degree and distribution of elasticity within the lesion: four patterns were identified (1, 2, 3a, 3b, or 4).None of the nodules with Thy 4 cytology (malignant) had USE pattern 1 or 2; patterns 3 and 4 were associated with higher cytologic grades. In conclusion, USE provides additional information on thyroid nodules, which can be used with ultrasound features of the nodules, to decide whether FNAC is indicated. In fact, patterns 1 and 2 do not seem to be associated with Thy 4 cytology.
Fragu, P.; Briancon, C.; Noel, M.; Halpern, S. )
Analytical ion microscopy (AIM) can be used for imaging and relative quantification of chemical elements in tissue sections. We used this technique to assess the changes in 127I mapping within thyroid follicular cells and follicular lumina in benign thyroid epithelial abnormalities from 17 patients and in macroscopically normal perinodular tissue surrounding solitary cold nodules from 8 patients. Among the 17 patients, 9 had simple goiters, 5 had toxic nodular goiters, and 3 had hypofunctioning (cold) nodules. The tissue samples were fixed chemically and embedded in methacrylate resin to ensure preservation of organified iodine, and thin sections were analyzed by AIM. 127I was found in the follicular lumina and follicular epithelial cells of most specimens. The local concentration of 127I, which is proportional to the ratio of the two secondary ion beam currents of iodine and carbon, was evaluated in 30 follicular lumina and 30 follicular epithelial cells of each specimen. In normal tissue, the relative 127I concentration within follicular cells (mean, 0.72; range 0.01-8.30) was much lower than that in follicular lumina (mean, 4.63; range, 0.18-36.74). In simple goiter tissue, follicular lumen (mean, 0.57; range, 0.00-5.76), and cell (mean, 0.17; range, 0.002-1.82) relative 127I concentrations were below normal, but both distributions remained different. On the contrary, in toxic nodular goiter tissue the follicular cell relative 127I concentration (mean, 0.96; range, 0.003-27.3) largely overlapped that of the follicular lumina (mean, 2.1; range, 0.001-36.5). The cold nodules had the lowest relative follicular lumina 127I concentration (mean, 0.008; range, undetectable-0.07), and the relative cellular 127I concentrations were undetectable in 67%. These results demonstrate the capacity of AIM to characterize the functional activity of thyroid tissue without prior administration of radio-iodine.
Kim, Sung Hun; Park, Chang Suk; Jung, So Lyung; Kang, Bong Joo; Kim, Jee Young; Choi, Jae Jung; Kim, Ye Il; Oh, Jin Kyung; Oh, Jung Suk; Kim, Hanna; Jeong, Seung Hee; Yim, Hyeon Woo
To evaluate the interobserver variability and performance in the interpretation of ultrasonographic (US) findings of thyroid nodules. 72 malignant nodules and 61 benign nodules were enrolled as part of this study. Five faculty radiologists and four residents independently performed a retrospective analysis of the US images. The observers received one training session after the first interpretation and then performed a secondary interpretation. Agreement was analyzed by Cohen's kappa statistic. Degree of performance was analyzed using receiver operating characteristic (ROC) curves. Agreement between the faculties was fair-to-good for all criteria; however, between residents, agreement was poor-to-fair. The area under the ROC curves was 0.72, 0.62, and 0.60 for the faculties, senior residents, and junior residents, respectively. There was a significant difference in performance between the faculties and the residents (p < 0.05). There was a significant increase in the agreement for some criteria in the faculties and the senior residents after the training session, but no significant increase in the junior residents. Independent reporting of thyroid US performed by residents is undesirable. A continuous and specialized resident training is essential to enhance the degree of agreement and performance.
Pagsisihan, Daveric Ablis; Aguilar, Anthony Harvey Isabelo; Maningat, Ma Patricia Deanna Delfin
Papillary thyroid carcinomas (PTCs), particularly microcarcinomas, rarely metastasise to the orbit. We report a case of a 49-year-old woman with a right supraorbital mass and unremarkable physical examination of the thyroid gland region. Orbital CT scan showed an expansile lytic lesion in the orbital plate of the frontal bone with a soft tissue component. An incision biopsy revealed metastatic well-differentiated thyroid carcinoma. Thyroid ultrasound was normal except for a subcentimetre nodule in the right lobe. The patient underwent total thyroidectomy where histopathology showed a subcentimetre follicular variant PTC. She subsequently received radioactive iodine therapy. Post-therapy whole body scan revealed metastatic thyroid tissues in the right orbital and posterior parietal, and left shoulder and hip areas. Although infrequent, metastatic thyroid carcinoma should be considered in patients with orbital metastasis even when neck examination is normal. In rare cases, this may be the initial manifestation of a widely metastatic papillary thyroid microcarcinoma. PMID:25819821
Buffet, Camille; Groussin, Lionel
The diagnosis of thyroiditis encompasses a broad spectrum of thyroid disorders. Analysis of signs and symptoms, biochemical changes, neck ultrasound characteristics and radioactive iodine uptake values allows an accurate diagnosis. Recent studies of the whole genome have helped to identify many susceptibility genes for autoimmune thyroiditis. However, none of these genes contribute to a significant increase in risk of developing this thyroiditis. Clinical awareness of the characteristic presentations of exceptional thyroiditis (acute suppurative thyroiditis, Riedel's thyroiditis) is an important issue. Selenium administration seems to be beneficial for reducing the incidence of thyroiditis. Finally, certain drug-induced thyroiditis remains a therapeutic challenge for the physician.
... Hashimoto’s thyroiditis is the most common cause of hypothyroidism in the United States. Postpartum thyroiditis, which causes ... hormone levels in the blood) followed by temporary hypothyroidism, is a common cause of thyroid problems after ...
Thyroid is used to treat the symptoms of hypothyroidism (a condition where the thyroid gland does not produce enough thyroid hormone). Symptoms of hypothyroidism include lack of energy, depression, constipation, weight gain, ...
Jang, Ja Yoon; Kim, Sun Mi; Kim, Jin Hwan; Jang, Mijung; La Yun, Bo; Lee, Jong Yoon; Lee, Soo Hyun; Kim, Bohyoung
The aims of this study were to determine the malignancy rate of probably benign lesions that show an interval change on follow-up ultrasound and to evaluate the differences seen on imaging between benign and malignant lesions initially categorized as probably benign but with interval change on follow-up breast ultrasound.We retrospectively reviewed 11,323 lesions from ultrasound-guided core-biopsies performed between June 2004 and December 2014 and identified 289 lesions (266 patients) with an interval change from probably benign (Breast Imaging Reporting and Data System [BI-RADS] category 3) in the previous 2 years. Malignancy rates were compared according to the ultrasound findings and the characteristics of the interval changes, including changes in morphology and/or diameter.The malignancy rate for probably benign lesions that showed an interval change on follow-up ultrasound was 6.9% (20/289). The malignancy rate was higher for clustered cysts (33.3%) and irregular or noncircumscribed masses (12.7%) than for circumscribed oval masses (5%) or complicated cysts (5%) seen on initial ultrasound (P = 0.043). Fifty-five percent of the malignancies were found to be ductal carcinoma in situ and there was 1 case of lymph node metastasis among the patients with invasive disease in whom biopsy was delayed by 6 to 15 months. The extent of invasiveness was greater in missed cases. There was a significant difference in the maximal diameter change between the 20 malignant lesions and the 269 benign lesions (4.0 mm vs 2.7 mm, P = 0.002). The cutoff value for maximal diameter change per initial diameter was 39.0% for predicting malignancy (sensitivity 95%, specificity 53.5%). The malignancy rate for morphologically changed lesions was significantly higher than for morphologically stable lesions (13.6% vs 4.9%; P = 0.024)Our 6.9% of probably benign lesions that showed an interval change finally turned out to be malignancy was mostly DCIS. The sonographic
Jang, Ja Yoon; Kim, Sun Mi; Kim, Jin Hwan; Jang, Mijung; La Yun, Bo; Lee, Jong Yoon; Lee, Soo Hyun; Kim, Bohyoung
Abstract The aims of this study were to determine the malignancy rate of probably benign lesions that show an interval change on follow-up ultrasound and to evaluate the differences seen on imaging between benign and malignant lesions initially categorized as probably benign but with interval change on follow-up breast ultrasound. We retrospectively reviewed 11,323 lesions from ultrasound-guided core-biopsies performed between June 2004 and December 2014 and identified 289 lesions (266 patients) with an interval change from probably benign (Breast Imaging Reporting and Data System [BI-RADS] category 3) in the previous 2 years. Malignancy rates were compared according to the ultrasound findings and the characteristics of the interval changes, including changes in morphology and/or diameter. The malignancy rate for probably benign lesions that showed an interval change on follow-up ultrasound was 6.9% (20/289). The malignancy rate was higher for clustered cysts (33.3%) and irregular or noncircumscribed masses (12.7%) than for circumscribed oval masses (5%) or complicated cysts (5%) seen on initial ultrasound (P = 0.043). Fifty-five percent of the malignancies were found to be ductal carcinoma in situ and there was 1 case of lymph node metastasis among the patients with invasive disease in whom biopsy was delayed by 6 to 15 months. The extent of invasiveness was greater in missed cases. There was a significant difference in the maximal diameter change between the 20 malignant lesions and the 269 benign lesions (4.0 mm vs 2.7 mm, P = 0.002). The cutoff value for maximal diameter change per initial diameter was 39.0% for predicting malignancy (sensitivity 95%, specificity 53.5%). The malignancy rate for morphologically changed lesions was significantly higher than for morphologically stable lesions (13.6% vs 4.9%; P = 0.024) Our 6.9% of probably benign lesions that showed an interval change finally turned out to be malignancy was mostly DCIS. The
Giaginis, Constantinos; Alexandrou, Paraskevi; Delladetsima, Ioanna; Karavokyros, Ioannis; Danas, Eugene; Giagini, Athina; Patsouris, Efstratios; Theocharis, Stamatios
Hu-antigen R (HuR) is considered to play a crucial role in tumor formation and growth by binding to mRNAs encoding proteins such as Cyclooxygenase-2 (COX-2) and inducing their expression via mRNA stabilization and/or altered translation. The present study aimed to evaluate the clinical significance of HuR and COX-2 proteins’ expression in human benign and malignant thyroid lesions. HuR and COX-2 proteins’ expression was assessed immunohistochemically on paraffin-embedded thyroid tissues obtained from 98 patients with benign (n = 48) and malignant (n = 50) lesions and was statistically analyzed with clinicopathological parameters, follicular cells’ proliferative capacity and recurrence risk rate. Enhanced HuR and COX-2 expression was significantly more frequently observed in malignant compared to benign thyroid lesions (p = 0.0073 and p = 0.0016, respectively), as well as in papillary carcinomas compared to hyperplastic nodules (p = 0.0039 and p = 0.0009, respectively). Positive associations of both HuR and COX-2 expression with follicular cells’ proliferation rate were also noted (p = 0.0087 and p = 0.0127, respectively). In malignant thyroid lesions, elevated COX-2 expression was significantly associated with female patients’ gender (p = 0.0381) and the presence of lymph node metastases (p = 0.0296). The present data support evidence that both HuR and COX-2 may be involved in the malignant state of thyroid neoplasia and may be utilized in the diagnosis of malignant thyroid tumors.
Li, Wen-Bo; Zhang, Bo; Zhu, Qing-Li; Jiang, Yu-Xin; Sun, Jian; Yang, Meng; Li, Jian-Chu
We explored the efficacy of thin-slice volumetric 3-D ultrasound (3-DUS) in distinguishing between benign and malignant thyroid nodules. A total of 103 thyroid nodules were evaluated prospectively using 3-D gray-scale ultrasonography. The shape, margin, halo and potential capsular invasion of the nodules were compared with the findings of conventional 2-D ultrasound (2-DUS). Of the 103 thyroid nodules, there were 50 pathologically confirmed benign lesions and 53 malignant lesions (51.5%). Shape irregularity, ill-defined margins and capsular invasion provided sensitivities of 90.0%, 47.2% and 39.6% and specificities of 88.0%, 84.0% and 100%, respectively, for the malignant lesions. The diagnosis of thyroid cancer was improved in 3-DUS compared with 2-DUS, with a sensitivity of 88.7%, specificity of 90.0%, positive predictive value of 90.4%, negative predictive value of 88.2% and accuracy of 89.3%. The sensitivity of detection for lesions with capsular invasion increased to 39.6% with 3-DUS, more than twice that of 2-DUS. Three-dimensional US is highly accurate in diagnosing thyroid nodules, particularly those with capsular invasion.
Somwaru, Lily L.; Arnold, Alice M.
Background. Despite widespread use, there are no data on initiation of thyroid hormone use in older people. We report the prevalence of thyroid hormone use and predictors of thyroid hormone initiation in a population of older men and women. Methods. Thyroid hormone medication data were collected annually from 1989 to 2006 in community-dwelling individuals aged 65 years and older enrolled in the Cardiovascular Health Study (N = 5,888). Associations of age, sex, race, body mass index, education, and coronary heart disease with initiation were evaluated using discrete-time survival analysis. Results. In 1989–1990, 8.9% (95% confidence interval 8.1%–9.7%) of participants were taking a thyroid hormone preparation, increasing to 20.0% (95% confidence interval 8.2%–21.8%) over 16 years. The average initiation rate was 1% per year. The initiation rate was nonlinear with age, and those aged 85 years and older initiated thyroid hormone more than twice as frequently as those aged 65–69 years (hazard ratio = 2.34; 95% confidence interval 1.43–3.85). White women were more likely to initiate thyroid hormone than any other race and sex group. Higher body mass index was independently associated with higher risk for initiation (p = .002) as was greater education (p = .02) and prevalent coronary heart disease (p = .03). Conclusions. Thyroid hormone use is common in older people. The indications and benefits of thyroid hormone use in older individuals with the highest rate of thyroid hormone initiation—the oldest old, overweight and obese individuals, and those with coronary heart disease—should be investigated. PMID:21628677
Gabler, Anja S; Kühnel, Christian; Winkens, Thomas; Freesmeyer, Martin
This study aimed to assess a hypothetical minimum administered activity of (124)I required to achieve comparability between pretherapeutic radioiodine uptake (RAIU) measurements by (124)I PET/CT and by (131)I RAIU probe, the clinical standard. In addition, the impact of different reconstruction algorithms on (124)I RAIU and the evaluation of pixel noise as a parameter for image quality were investigated. Different scan durations were simulated by different reconstruction intervals of 600-s list-mode PET datasets (including 15 intervals up to 600 s and 5 different reconstruction algorithms: filtered-backprojection and 4 iterative techniques) acquired 30 h after administration of 1 MBq of (124)I. The Bland-Altman method was used to compare mean (124)I RAIU levels versus mean 3-MBq (131)I RAIU levels (clinical standard). The data of 37 patients with benign thyroid diseases were assessed. The impact of different reconstruction lengths on pixel noise was investigated for all 5 of the (124)I PET reconstruction algorithms. A hypothetical minimum activity was sought by means of a proportion equation, considering that the length of a reconstruction interval equates to a hypothetical activity. Mean (124)I RAIU and (131)I RAIU already showed high levels of agreement for reconstruction intervals of as short as 10 s, corresponding to a hypothetical minimum activity of 0.017 MBq of (124)I. The iterative algorithms proved generally superior to the filtered-backprojection algorithm. (124)I RAIU showed a trend toward higher levels than (131)I RAIU if the influence of retrosternal tissue was not considered, which was proven to be the cause of a slight overestimation by (124)I RAIU measurement. A hypothetical minimum activity of 0.5 MBq of (124)I obtained with iterative reconstruction appeared sufficient both visually and with regard to pixel noise. This study confirms the potential of (124)I RAIU measurement as an alternative method for (131)I RAIU measurement in benign thyroid
Leite, Katia Ramos Moreira; Camara‐Lopes, Luiz Heraldo; Cury, José; Dall’Oglio, Marcos F.; Sañudo, Adriana; Srougi, Miguel
INTRODUCTION Sextant prostate biopsy remains the standard technique for the detection of prostate cancer. It is well known that after a diagnosis of small acinar proliferation (ASAP) or high grade prostate intraepithelial neoplasia (HGPIN), the possibility of finding cancer is approximately 40% and 30%, respectively. OBJECTIVE We aim to analyze follow-up biopsies on patients who initially received a benign diagnosis after exclusion of HGPIN and ASAP. METHODS From July 2000 to December 2003, 1177 patients were submitted to sextant extended prostate biopsy in our hospital. The mean patient age was 65.5 years old, and the median number of fragments collected at biopsy was 13. HGPIN and ASAP were excluded from our study. We only considered patients who had a diagnosis of benign at the first biopsy and were subjected to rebiopsies up until May 2005 because of a maintained suspicion of cancer. RESULTS Cancer was initially detected in 524 patients (44.5%), and the diagnosis was benign in 415 (35.3%). Rebiopsy was indicated for 76 of the latter patients (18.3%) because of a persistent suspicion of cancer. Eight cases of adenocarcinoma (10.5%) were detected, six (75%) at the first rebiopsy. Six patients were submitted to radical prostatectomy, and all tumors were considered clinically significant. CONCLUSION Our data indicate that in extended prostate biopsy, the first biopsy detects more cancer, and the first, second, and third rebiopsies after an initial benign diagnosis succeed in finding cancer in 7.9% (6/55), 5.9% (1/15) and 20% (1/4) of patients, respectively. PMID:18568243
Leite, Katia Ramos Moreira; Camara-Lopes, Luiz Heraldo; Cury, José; Dall'oglio, Marcos F; Sañudo, Adriana; Srougi, Miguel
Sextant prostate biopsy remains the standard technique for the detection of prostate cancer. It is well known that after a diagnosis of small acinar proliferation (ASAP) or high grade prostate intraepithelial neoplasia (HGPIN), the possibility of finding cancer is approximately 40% and 30%, respectively. We aim to analyze follow-up biopsies on patients who initially received a benign diagnosis after exclusion of HGPIN and ASAP. From July 2000 to December 2003, 1177 patients were submitted to sextant extended prostate biopsy in our hospital. The mean patient age was 65.5 years old, and the median number of fragments collected at biopsy was 13. HGPIN and ASAP were excluded from our study. We only considered patients who had a diagnosis of benign at the first biopsy and were subjected to rebiopsies up until May 2005 because of a maintained suspicion of cancer. Cancer was initially detected in 524 patients (44.5%), and the diagnosis was benign in 415 (35.3%). Rebiopsy was indicated for 76 of the latter patients (18.3%) because of a persistent suspicion of cancer. Eight cases of adenocarcinoma (10.5%) were detected, six (75%) at the first rebiopsy. Six patients were submitted to radical prostatectomy, and all tumors were considered clinically significant. Our data indicate that in extended prostate biopsy, the first biopsy detects more cancer, and the first, second, and third rebiopsies after an initial benign diagnosis succeed in finding cancer in 7.9% (6/55), 5.9% (1/15) and 20% (1/4) of patients, respectively.
Happel, Christian; Korkusuz, H; Koch, D A; Grünwald, F; Kranert, W T
Goiters and thyroid nodules are an ongoing problem in healthcare. There has not been any treatment of goiters and thyroid nodules based on the combined therapy of microwave ablation (MWA) and radioiodine therapy (RIT) until now. In this study the potential benefit of a combined therapy versus single RIT is evaluated in order to achieve improvements concerning ¹³¹I-dose and hospitalization time. Ten patients with goiter and benign thyroid nodules or Graves' disease were included. Pre-ablation assessments included sonographical imaging, functional imaging with 99mTc and FNAB to collect data of nodules and total thyroid volume and to exclude malignancy. Prior to treatment, radioiodine uptake test was performed. MWA was operated under local anesthesia with a system working in a wavelength field 902-928 MHz. Post-MWA, thyroid volume was recalculated ultrasonically. Due to reduced vital volume, changes of ¹³¹I-dose and hospitalization time could be monitored. Mean absolute thyroid volume reduction by MWA before applying RIT was 22 ± 11 ml, meaning a relative reduction of 24 ± 6% (p < 0.05). Thereby, administered activity could be reduced by 393 ± 188 MBq using the combined therapy, reflecting a relative reduction of 24 ± 6% (p < 0.05). Additionally, mean hospitalization time was decreased by 2.1 ± 0.8 days using MWA prior to RIT, implying a relative reduction of 28 ± 6% (p < 0.05). Depending on ablated volume by MWA, RIT-monotherapy requires on average 31.2% more ¹³¹I-activity than the combined therapy. The combined therapy remarkably decreases ¹³¹I-dose and hospitalization time. The combined MWA and RIT therapy is a considerable, effective and safer alternative to surgery for the treatment of very large benign nodular goiters.
Ramírez-Plaza, César Pablo; Domínguez-López, Marta Elena; Blanco-Reina, Francisco
Introduction Metastatic tumors account for 1.4–2.5% of thyroid malignancies. About 25–30% of patients with clear cell renal carcinoma (CCRC) have distant metastasis at the time of diagnosis, being the thyroid gland a rare localization [5%]. Presentation of the case A 62-year woman who underwent a cervical ultrasonography and a PAAF biopsy reporting atypical follicular proliferation with a few intranuclear vacuoles “suggestive” of thyroid papillary cancer in the context of a multinodular goiter was reported. A total thyroidectomy was performed and the histology of a clear cell renal carcinoma (CCRC) was described in four nodules of the thyroid gland. A CT scan was performed and a renal giant right tumor was found. The patient underwent an eventful radical right nephrectomy and the diagnosis of CCRC was confirmed. Discussion Thyroid metastasis (TM) from CCRC are usually apparent in a metachronic context during the follow-up of a treated primary (even many years after) but may sometimes be present at the same time than the primary renal tumor. Our case is exceptional because the TM was the first evidence of the CCRC, which was subsequently diagnosed and treated. Conclusion The possibility of finding of an incidental metastatic tumor in the thyroid gland from a previous unknown and non-diganosed primary (as CCRC in our case was) is rare and account only for less than 1% of malignancies. Nonetheless, the thyroid gland is a frequent site of metastasis and the presence of “de novo” thyroid nodules in oncologic patients must be always considered and studied. PMID:25827295
Dietrich, C F; Bojunga, J
Thyroid nodules and thyroid abnormalities are common findings in the general population. Ultrasonography is the most important imaging tool for diagnosing thyroid disease. In the majority of cases a correct diagnosis can already be made in synopsis of the sonographic together with clinical findings and basal thyroid hormone parameters and an appropriate therapy can be initiated thereafter. A differentiation of hormonally active versus inactive nodes, and in particular benign versus malignant nodules is sonographically, however, not reliably possible. In this context, radioscanning has its clinical significance predominantly in diagnosing hormonal activity of thyroid nodules. Efforts of the past years aimed to improve sonographic risk stratification to predict malignancy of thyroid nodules through standardized diagnostic assessment of evaluated risk factors in order to select patients, who need further diagnostic work up. According to the "Breast Imaging Reporting and Data System" (BI-RADS), "Thyroid Imaging Reporting and Data Systems" (TI-RADS) giving standardized categories with rates of malignancy were evaluated as a basis for further clinical management. Recent technological developments, such as elastography, also show promising data and could gain entrance into clinical practice. The ultrasound-guided fine-needle aspiration is the key element in the diagnosis of sonographically suspicious thyroid nodules and significantly contributes to the diagnosis of malignancy versus benignity.
Dietrich, C F; Bojunga, J
Thyroid nodules and thyroid abnormalities are common findings in the general population. Ultrasonography is the most important imaging tool for diagnosing thyroid disease. In the majority of cases a correct diagnosis can already be made in synopsis of the sonographic together with clinical findings and basal thyroid hormone parameters and an appropriate therapy can be initiated thereafter. A differentiation of hormonally active vs. inactive nodes, and in particular benign vs. malignant nodules is sonographically, however, not reliably possible. In this context, radioscanning has its clinical significance predominantly in diagnosing hormonal activity of thyroid nodules. Efforts of the past years aimed to improve sonographic risk stratification to predict malignancy of thyroid nodules through standardized diagnostic assessment of evaluated risk factors in order to select patients, who need further diagnostic work up. According to the "Breast Imaging Reporting and Data System" (BI-RADS), "Thyroid Imaging Reporting and Data Systems" (TI-RADS) giving standardized categories with rates of malignancy were evaluated as a basis for further clinical management. Recent technological developments, such as elastography, also showpromising data and could gain entrance into clinical practice. The ultrasound-guided fineneedle aspiration is the key element in the diagnosis of sonographically suspicious thyroid nodules and significantly contributes to the diagnosis of malignancy versus benignity.
Impact of the Reclassification of the Non-Invasive Follicular Variant of Papillary Carcinoma as Benign on the Malignancy Risk of the Bethesda System for Reporting Thyroid Cytopathology: A Meta-Analysis Study.
Layfield, Lester J; Baloch, Zubair W; Esebua, Magda; Kannuswamy, Rohini; Schmidt, Robert L
The Bethesda System for Reporting Thyroid Cytopathology (TBSRTC) established diagnostic categories for cytologic specimens of the thyroid. Each category was associated with an estimated risk of malignancy. Recently, the non-invasive follicular variant of papillary thyroid carcinoma has been reclassified as benign. This reclassification may alter the malignancy risk of TBSRTC diagnostic categories. A literature search was made for all studies investigating the effect of reclassification of some non-invasive follicular variant papillary thyroid carcinomas as benign on the malignancy risk associated with TBSRTC categories. The authors calculated the malignancy risk for TBSRTC categories in a series of 315 thyroid aspirates when the non-invasive follicular variant of papillary thyroid carcinoma was considered benign. A meta-analysis of malignancy risk data for the 3 published studies and the current study was performed. The meta-analysis showed that the malignancy risk was reduced for all TBSRTC categories except the "non-diagnostic" category. The reduction in malignancy risk was greatest in the categories "suspicious for malignancy" and "atypia/follicular lesion of undetermined significance." A meta-analysis of all pertinent studies demonstrated that re-categorization of the non-invasive follicular variant of papillary thyroid carcinoma as benign reduces the malignancy risk in the majority of TBSRTC categories. © 2017 S. Karger AG, Basel.
Chang, Yongjun; Paul, Anjan Kumar; Kim, Namkug Baek, Jung Hwan; Choi, Young Jun; Ha, Eun Ju; Lee, Kang Dae; Lee, Hyoung Shin; Shin, DaeSeock; Kim, Nakyoung
Purpose: To develop a semiautomated computer-aided diagnosis (CAD) system for thyroid cancer using two-dimensional ultrasound images that can be used to yield a second opinion in the clinic to differentiate malignant and benign lesions. Methods: A total of 118 ultrasound images that included axial and longitudinal images from patients with biopsy-confirmed malignant (n = 30) and benign (n = 29) nodules were collected. Thyroid CAD software was developed to extract quantitative features from these images based on thyroid nodule segmentation in which adaptive diffusion flow for active contours was used. Various features, including histogram, intensity differences, elliptical fit, gray-level co-occurrence matrixes, and gray-level run-length matrixes, were evaluated for each region imaged. Based on these imaging features, a support vector machine (SVM) classifier was used to differentiate benign and malignant nodules. Leave-one-out cross-validation with sequential forward feature selection was performed to evaluate the overall accuracy of this method. Additionally, analyses with contingency tables and receiver operating characteristic (ROC) curves were performed to compare the performance of CAD with visual inspection by expert radiologists based on established gold standards. Results: Most univariate features for this proposed CAD system attained accuracies that ranged from 78.0% to 83.1%. When optimal SVM parameters that were established using a grid search method with features that radiologists use for visual inspection were employed, the authors could attain rates of accuracy that ranged from 72.9% to 84.7%. Using leave-one-out cross-validation results in a multivariate analysis of various features, the highest accuracy achieved using the proposed CAD system was 98.3%, whereas visual inspection by radiologists reached 94.9% accuracy. To obtain the highest accuracies, “axial ratio” and “max probability” in axial images were most frequently included in the
Chang, Yongjun; Paul, Anjan Kumar; Kim, Namkug; Baek, Jung Hwan; Choi, Young Jun; Ha, Eun Ju; Lee, Kang Dae; Lee, Hyoung Shin; Shin, DaeSeock; Kim, Nakyoung
To develop a semiautomated computer-aided diagnosis (cad) system for thyroid cancer using two-dimensional ultrasound images that can be used to yield a second opinion in the clinic to differentiate malignant and benign lesions. A total of 118 ultrasound images that included axial and longitudinal images from patients with biopsy-confirmed malignant (n = 30) and benign (n = 29) nodules were collected. Thyroid cad software was developed to extract quantitative features from these images based on thyroid nodule segmentation in which adaptive diffusion flow for active contours was used. Various features, including histogram, intensity differences, elliptical fit, gray-level co-occurrence matrixes, and gray-level run-length matrixes, were evaluated for each region imaged. Based on these imaging features, a support vector machine (SVM) classifier was used to differentiate benign and malignant nodules. Leave-one-out cross-validation with sequential forward feature selection was performed to evaluate the overall accuracy of this method. Additionally, analyses with contingency tables and receiver operating characteristic (ROC) curves were performed to compare the performance of cad with visual inspection by expert radiologists based on established gold standards. Most univariate features for this proposed cad system attained accuracies that ranged from 78.0% to 83.1%. When optimal SVM parameters that were established using a grid search method with features that radiologists use for visual inspection were employed, the authors could attain rates of accuracy that ranged from 72.9% to 84.7%. Using leave-one-out cross-validation results in a multivariate analysis of various features, the highest accuracy achieved using the proposed cad system was 98.3%, whereas visual inspection by radiologists reached 94.9% accuracy. To obtain the highest accuracies, "axial ratio" and "max probability" in axial images were most frequently included in the optimal feature sets for the authors
Yang, Wanding; Cho, WaiSum; Das, Sudip; Conboy, Peter
Differentiated carcinomas of the thyroid gland usually have a good prognosis with prognosis often discussed in terms of 20 year survival. Nevertheless its 10-year-survival rate decreases when accompanied by distant metastasis. Follicular thyroid cancer (FTC) is the second most common thyroid cancer and usually presents with a solitary thyroid nodule with or without cervical lymphadenopathy. Distance metastasis at initial diagnosis is seldom observed with incidence range from 1 to 9%. In cases of bone metastasis, the incidence is only 2–3% and weight-bearing skeleton is preferentially affected. In our case, we present a patient with FTC that metastasized to the upper limb causing severe pain and pathological fracture at the initial presentation. PMID:28108635
Carmelino, Janine; Tavares, Ana Paula; Crespo, Ana; Coutinho, José Mário; Lázaro, António; Ribeiro, Vasco; Barroso, Eduardo
Clear cell renal carcinoma metastases to the thyroid gland are rare and only diagnosable after an immunohistochemistry analysis of the histological sample. The purpose of this article is to report a case of thyroid metastasis as the initial presentation of a clear cell renal carcinoma. Male patient with a solid nodule in the left lobe of the thyroid, 5.3 cm in diameter, suspicious of malignancy, for which a total thyroidectomy with central compartment lymphadenectomy was performed. Histology revealed two clear cell renal carcinoma metastases. After evaluation of the kidney, the patient underwent radical nephrectomy four months later. What makes this case interesting is that thyroid metastases as the initial presentation of renal cell carcinoma are rare, but if treated early, a 'double surgical resection' is possible, leading to a 5 year survival rate of 80%.
Moncayo, Roy; Moncayo, Helga
Background The aim of this study was to discern whether a relation between biochemical parameters, sonography and musculoskeletal data exists in cases of hyperthyroidism and whether they are modifiable through supplementation with selenomethionine and magnesium citrate as well as by acupuncture and manual medicine methods. Results A direct correlation between whole blood selenium and serum magnesium was found in subjects without thyroid disease and in menopausal women while it was reversed in cases of thyroid diseases as well as in patients with depression, infection, and in infertile women. Vascularization indices were elevated in cases of newly diagnosed benign thyroid diseases. Musculoskeletal changes i.e. lateral tension and idiopathic moving toes, as well as situations of physical and psychological stress and minor trauma and infection led to an increase of vascularization. Magnesium levels correlated negatively with these two conditions. The supplementation brought a reduction of the vascularization indices and reduced the incidence of idiopathic moving toes. Treatment of lateral tension required manual medicine methods and acupuncture (gastrocnemius). A small subgroup of patients showed a further reduction of hyper-vascularization after receiving coenzyme Q10. Conclusions We interpret the elevated thyroid vascularization and low magnesium levels as signs of an inflammatory process related to the musculoskeletal changes. Improvement of thyroid function and morphology can be achieved after correcting the influence of stressors together with the supplementation regime. We hypothesize that the central biochemical event in thyroid disease is that of an acquired, altered mitochondrial function due to deficiency of magnesium, selenium, and coenzyme Q10. PMID:26675817
Kato, Ikuko; Young, Alicia; Liu, Jingmin; Abrams, Judith; Bock, Cathryn; Simon, Michael
Thyroid cancer disproportionally affects more women than men. The aim of this study was to assess whether exposure to extremely low frequency electric magnetic fields from electric blankets (EBs) was associated with the development of thyroid cancer. Data were analyzed from 89,527 women who participated in the Women's Health Initiative Observational Study and who responded to questions concerning prior use of EBs. During a mean follow-up of 12.2 years, 190 incident cases of thyroid cancer were identified. We estimated the hazard ratio (HR) and 95 percent confidence interval (CI) of incident thyroid cancer associated with EB use by Cox's proportional hazard model, adjusted for selected covariates. A majority, 57 percent, of the women in the cohort reported the use of EBs while sleeping and/or for warming the bed before sleep. No association was found between use of EBs and subsequent risk of thyroid cancer (HR = 0.98, 95 percent CI 0.72-1.32). Duration of EB use measured in years, months, or hours had no effect on risk. These results did not change when the cases were limited to papillary thyroid cancer, the most frequently occurring histologic type. The results of this study do not support possible health hazards of EBs in regards to thyroid cancer risk.
Cost-effective and non-invasive automated benign and malignant thyroid lesion classification in 3D contrast-enhanced ultrasound using combination of wavelets and textures: a class of ThyroScan™ algorithms.
Acharya, U R; Faust, O; Sree, S V; Molinari, F; Garberoglio, R; Suri, J S
Ultrasound has great potential to aid in the differential diagnosis of malignant and benign thyroid lesions, but interpretative pitfalls exist and the accuracy is still poor. To overcome these difficulties, we developed and analyzed a range of knowledge representation techniques, which are a class of ThyroScan™ algorithms from Global Biomedical Technologies Inc., California, USA, for automatic classification of benign and malignant thyroid lesions. The analysis is based on data obtained from twenty nodules (ten benign and ten malignant) taken from 3D contrast-enhanced ultrasound images. Fine needle aspiration biopsy and histology confirmed malignancy. Discrete Wavelet Transform (DWT) and texture algorithms are used to extract relevant features from the thyroid images. The resulting feature vectors are fed to three different classifiers: K-Nearest Neighbor (K-NN), Probabilistic Neural Network (PNN), and Decision Tree (DeTr). The performance of these classifiers is compared using Receiver Operating Characteristic (ROC) curves. Our results show that combination of DWT and texture features coupled with K-NN resulted in good performance measures with the area of under the ROC curve of 0.987, a classification accuracy of 98.9%, a sensitivity of 98%, and a specificity of 99.8%. Finally, we have proposed a novel integrated index called Thyroid Malignancy Index (TMI), which is made up of texture features, to diagnose benign or malignant nodules using just one index. We hope that this TMI will help clinicians in a more objective detection of benign and malignant thyroid lesions.
Luo, Juhua; Sands, Megan; Wactawski-Wende, Jean; Song, Yiqing; Margolis, Karen L.
Sleep disturbance has been found to be associated with numerous adverse health outcomes, including cancers. However, no epidemiologic study has examined the relation between sleep disturbance and thyroid cancer risk. A total of 142,933 postmenopausal women who were 50–79 years of age and enrolled in the Women's Health Initiative between September 1, 1993, and December 31, 1998, were followed up for a mean of 11 years. Cox proportional-hazard regression models were used to estimate hazard ratios and 95% confidence intervals for sleep disturbance (insomnia and sleep duration) and risk of thyroid cancer. Insomnia score was measured using a validated 5-item Women's Health Initiative Insomnia Rating Scale. Overall, a total of 295 thyroid cancer cases were identified. After adjustment for potential confounders, women with greater insomnia scores had a significantly higher risk of thyroid cancer than did women with low scores (hazard ratio = 1.44, 95% confidence interval: 1.01, 2.05). The significant association between insomnia score and thyroid cancer was confined to nonobese women (hazard ratio = 1.71, 95% confidence interval: 1.12, 2.62) and was not seen in obese women (hazard ratio = 0.94 95% confidence interval: 0.48, 1.84) (P for interaction = 0.07). In conclusion, postmenopausal women with greater insomnia scores, especially nonobese women, had a significantly increased risk of thyroid cancer. More studies are needed to confirm these findings. PMID:23221728
Luo, Juhua; Sands, Megan; Wactawski-Wende, Jean; Song, Yiqing; Margolis, Karen L
Sleep disturbance has been found to be associated with numerous adverse health outcomes, including cancers. However, no epidemiologic study has examined the relation between sleep disturbance and thyroid cancer risk. A total of 142,933 postmenopausal women who were 50-79 years of age and enrolled in the Women's Health Initiative between September 1, 1993, and December 31, 1998, were followed up for a mean of 11 years. Cox proportional-hazard regression models were used to estimate hazard ratios and 95% confidence intervals for sleep disturbance (insomnia and sleep duration) and risk of thyroid cancer. Insomnia score was measured using a validated 5-item Women's Health Initiative Insomnia Rating Scale. Overall, a total of 295 thyroid cancer cases were identified. After adjustment for potential confounders, women with greater insomnia scores had a significantly higher risk of thyroid cancer than did women with low scores (hazard ratio = 1.44, 95% confidence interval: 1.01, 2.05). The significant association between insomnia score and thyroid cancer was confined to nonobese women (hazard ratio = 1.71, 95% confidence interval: 1.12, 2.62) and was not seen in obese women (hazard ratio = 0.94 95% confidence interval: 0.48, 1.84) (P for interaction = 0.07). In conclusion, postmenopausal women with greater insomnia scores, especially nonobese women, had a significantly increased risk of thyroid cancer. More studies are needed to confirm these findings.
Usefulness of Serum Calcitonin in Patients Without a Suspicious History of Medullary Thyroid Carcinoma and with Thyroid Nodules Without an Indication for Fine-Needle Aspiration or with Benign Cytology.
Rosario, P W; Calsolari, M R
This study evaluated the usefulness of serum calcitonin (Ctn) in subjects without a suspicious history of medullary thyroid carcinoma (MTC) and with nodular thyroid disease without an indication for fine-needle aspiration (FNA) or with benign cytology. This was a prospective study that evaluated 421 patients with nodular disease without an indication for FNA and 602 patients with benign cytology. Patients with basal Ctn>10 pg/ml were submitted to calcium stimulation testing. Patients with stimulated Ctn>100 pg/ml were submitted to total thyroidectomy. Basal Ctn was<10 pg/ml in 1001 patients (97.8%). Among patients with basal Ctn>10 pg/ml, 16/22 exhibited stimulated Ctn>100 pg/ml. Two of these 16 patients had MTC. The 2 patients with MTC had undetectable basal Ctn 6 months after surgery. Using a cut-off of 30 pg/ml in women and 60 pg/ml in men for basal Ctn, the 2 cases of MTC of our series would have been identified and there would have been no false-positive case. It should be noted that 14/16 patients with stimulated Ctn>100 pg/ml were false-positive cases. Although uncommon, even subjects without a suspicious history and with nodular thyroid disease without an indication for FNA or with benign cytology can have MTC. The measurement of Ctn permits the diagnosis of these cases. Our results favor the hypothesis that basal Ctn could be superior to stimulated Ctn. © Georg Thieme Verlag KG Stuttgart · New York.
Slosar, Magdalena; Vohra, Poonam; Prasad, Manju; Fischer, Andrew; Quinlan, Robert; Khan, Ashraf
differentiating malignant and benign follicular pattern thyroid lesions. This study also points to a possible common biological relationship between FC and FVPC that requires further investigation.
Westphal, Julian G; Winkens, Thomas; Kühnel, Christian; Freesmeyer, Martin
Radioiodine therapy of benign thyroid diseases requires pretherapy assessment of radioactive iodine uptake (RAIU) for reliable therapy planning. Our objective was to assess RAIU by low-activity (124)I-positron emission tomography/low-dose computed tomography ((124)I-PET/CT) in comparison with standard (131)I probe measurements. This prospective comparative study was conducted at the Jena University Hospital, Jena, Germany, in a referral center setting. A total of 79 patients with benign thyroid diseases were screened, 40 of whom met the inclusion criteria (stable TSH, free T3 and free T4 levels; no thyroid-specific medication, no iodine contamination) and 24 of whom agreed to participate by signing an informed consent. All patients received the standard (131)I scintillation probe uptake test 30 hours after administration of 3 MBq (131)I. Seven days later, all patients were subjected to (124)I-PET/CT uptake measurement 30 hours after administration of 1 MBq (124)I. The decay-corrected uptake values of both techniques were compared. Additionally, 3 different volume-of-interest-based evaluation methods in PET/CT (whole neck [WN], automatic isocontour [IC], and manually contoured [MC]) were evaluated. The (131)I probe measurement and (124)I-PET.WN method provided very similar mean RAIU (30.7% ± 10.3%; 31.7% ± 8.9%), resulting in a significant positive correlation (r = 0.93, P < .001). Compared with (124)I-PET.WN, the (124)I-PET.IC (29.8% ± 8.6%) and the (124)I-PET.MC (24.5% ± 7.1%) demonstrated lower uptake values. Using activities as low as 1 MBq, the (124)I-PET.WN method shows a good correlation with conventional (131)I probe measurement. Thus, (124)I-PET/CT is a suitable alternative for pretherapy RAIU evaluations. This may offer potential additional benefits such as PET/ultrasound fusion imaging and CT volumetry.
Cai, Haidong; Qiao, Yu; Huang, Xiao; Sun, Ming; Luo, Qiong; Yuan, Xueyu; Yang, Yuehua; Mao, Weiqing; Lv, Zhongwei
In the initial assessment of thyroid nodules, thyrotropin (TSH) has very low sensitivity for assessing functional thyroid nodules (FTNs). The false negativity in FTNs and the false positivity in non-FTNs misinterpreted by TSH will raise unnecessary assessment costs. Therefore, the aim of this study is to explore the values of the TSH and color flow Doppler sonography (CFDS) combined strategies in reducing the unnecessary assessment costs. 2383 patients with thyroid nodules were retrospectively analyzed, including 107 FTNs and 2276 non-FTNs. Four strategies including TSH, CFDS, Combination 1 (TSH+/CFDS+, TSH+/CFDS-, and TSH-/CFDS+ defined as positive; TSH-/CFDS- defined as negative) and Combination 2 (TSH+/CFDS+ defined as positive; TSH+/CFDS-, TSH-/CFDS+, and TSH-/CFDS- defined as negative) were separately used for initial assessment. The four strategies were compared using the testing cost ratio of fine-needle aspiration (FNA) to thyroid scintigraphy (TS) (marked as CFNA/TS) as main outcome measure. Compared with TSH, Combination 1 prevented 15.89 % of FTNs from unnecessary FNA, but increased the number of non-FTNs subjected to unnecessary (99m)Tc-TS by 9.31 %. Combination 2 prevented 5.32 % of non-FTNs from unnecessary TS, but increased the number of FTNs subjected to unnecessary FNA by 18.69 %. When CFNA/TS was <6.05, the lowest total cost was found in Combination 2. The TSH and Combination 1 were optimal at 6.05 ≤ CFNA/TS ≤ 12.47 and CFNA/TS > 12.47, respectively. The combined strategies can be used to supplement TSH in the initial assessment of thyroid nodules in iodine-adequate areas, depending on the testing costs of FNA and TS.
Fujarewicz, Krzysztof; Jarząb, Michał; Eszlinger, Markus; Krohn, Knut; Paschke, Ralf; Oczko-Wojciechowska, Małgorzata; Wiench, Małgorzata; Kukulska, Aleksandra; Jarząb, Barbara; Świerniak, Andrzej
Selection of novel molecular markers is an important goal of cancer genomics studies. The aim of our analysis was to apply the multivariate bioinformatical tools to rank the genes – potential markers of papillary thyroid cancer (PTC) according to their diagnostic usefulness. We also assessed the accuracy of benign/malignant classification, based on gene expression profiling, for PTC. We analyzed a 180-array dataset (90 HG-U95A and 90 HG-U133A oligonucleotide arrays), which included a collection of 57 PTCs, 61 benign thyroid tumors, and 62 apparently normal tissues. Gene selection was carried out by the support vector machines method with bootstrapping, which allowed us 1) ranking the genes that were most important for classification quality and appeared most frequently in the classifiers (bootstrap-based feature ranking, BBFR); 2) ranking the samples, and thus detecting cases that were most difficult to classify (bootstrap-based outlier detection). The accuracy of PTC diagnosis was 98.5% for a 20-gene classifier, its 95% confidence interval (CI) was 95.9–100%, with the lower limit of CI exceeding 95% already for five genes. Only 5 of 180 samples (2.8%) were misclassified in more than 10% of bootstrap iterations. We specified 43 genes which are most suitable as molecular markers of PTC, among them some well-known PTC markers (MET, fibronectin 1, dipeptidylpeptidase 4, or adenosine A1 receptor) and potential new ones (UDP-galactose-4-epimerase, cadherin 16, gap junction protein 3, sushi, nidogen, and EGF-like domains 1, inhibitor of DNA binding 3, RUNX1, leiomodin 1, F-box protein 9, and tripartite motif-containing 58). The highest ranking gene, metallophosphoesterase domain-containing protein 2, achieved 96.7% of the maximum BBFR score. PMID:17914110
Abdullah, Mardiaty Iryani; Lee, Ching Chin; Mat Junit, Sarni; Ng, Khoon Leong
Background Papillary thyroid cancer (PTC) is mainly diagnosed using fine-needle aspiration biopsy. This most common form of well-differentiated thyroid cancer occurs with or without a background of benign thyroid goiter (BTG). Methods In the present study, a gel-based proteomics analysis was performed to analyse the expression of proteins in tissue and serum samples of PTC patients with (PTCb; n = 6) and without a history of BTG (PTCa; n = 8) relative to patients with BTG (n = 20). This was followed by confirmation of the levels of proteins which showed significant altered abundances of more than two-fold difference (p < 0.01) in the tissue and serum samples of the same subjects using ELISA. Results The data of our study showed that PTCa and PTCb distinguish themselves from BTG in the types of tissue and serum proteins of altered abundance. While higher levels of alpha-1 antitrypsin (A1AT) and heat shock 70 kDa protein were associated with PTCa, lower levels of A1AT, protein disulfide isomerase and ubiquitin-conjugating enzyme E2 N seemed apparent in the PTCb. In case of the serum proteins, higher abundances of A1AT and alpha 1-beta glycoprotein were detected in PTCa, while PTCb was associated with enhanced apolipoprotein A-IV and alpha 2-HS glycoprotein (AHSG). The different altered expression of tissue and serum A1AT as well as serum AHSG between PTCa and PTCb patients were also validated by ELISA. Discussion The distinctive altered abundances of the tissue and serum proteins form preliminary indications that PTCa and PTCb are two distinct cancers of the thyroid that are etiologically and mechanistically different although it is currently not possible to rule out that they may also be due other reasons such as the different stages of the malignant disease. These proteins stand to have a potential use as tissue or serum biomarkers to discriminate the three different thyroid neoplasms although this requires further validation in clinically representative
Zandieh, Shahin; Pokieser, Wolfgang; Knoll, Peter; Sonneck-Koenne, Charlotte; Kudlacek, Martina; Mirzaei, Siroos
The literature is sparse concerning 18F-fluorodeoxyglucose (18F-FDG) accumulation in the Hürthle cell neoplasm (HCN) of the thyroid. Given the difficulty of accurately diagnosing HCN, even with ultrasound (US) and fine needle aspiration biopsy (FNAB), the ability to accurately characterize these lesions by 18F-FDG positron emission tomography (PET) would be of value. To describe six cases of oncocytic proliferation in the thyroid gland that mimics the presence of metastatic disease and was detected incidentally by an 18F-FDG PET scan. We conducted whole-body 18F-FDG PET examinations for cancer staging in 1862 oncological patients from 2012 to 2013. Among them, six subjects (4 women, 2 men; age range, 45-85 years) with focal-enhanced 18F-FDG accumulation in the thyroid gland were selected from the study population. This study group was further investigated using 99 m-Tc-pertechnetate scintigraphy, US, and FNAB. Two experienced nuclear physicians reviewed the images. Gray-scale US and color Doppler (CD) sonographic examinations of the thyroid were undertaken for all subjects using a sonographic device Logiq 5 Expert (GE Medical Systems, Osaka, Japan) equipped with a 7-12 MHz linear array transducer. In all six cases, abnormal 18F-FDG uptake was found locally in the thyroid. The average SUVmax of the HCN was 5.8 (range, 2.6-16). In all six cases, 99 m-Tc-pertechnetate scintigraphy showed a cold spot. Compared with normal parenchymal vascularity, five of the six masses were shown to be hypervascular by CD ultrasonography. On PET scans, oncocytic proliferations of the thyroid may mimic metastases of other malignancies. The focal-enhanced uptake of 18F-FDG PET may be associated with a focal increase in the metabolic activity of the thyroid parenchyma due to the presence of oncocytes. Our study emphasizes the importance of obtaining cytological evidence before making a diagnosis of metastatic disease. © The Foundation Acta Radiologica 2014 Reprints and permissions
Zhou, Rongjin; Wang, Junguo
Riedel thyroiditis is a benign disease, which is often self-limited. Examinations, such as CT and histologic diagnosis can distinguish it from malignant neoplasms and hashimoto's thyroiditis. Riedel thyroiditis is an uncommon form of chronic thyroiditis in which the thyroid gland is replaced by fibrous tissue. It can be cured by surgery and medicine.
Sewefy, Alaa M; Tohamy, Tohamy A; Esmael, Tarek M; Atyia, Ahmed M
Due to high recurrence rate after subtotal thyroidectomy, most of centers have shifted to total thyroidectomy as a surgical treatment for benign multinodular goiter (BMNG), but serious complications, as laryngeal nerve affection & hypocalcaemia, are still present. This study aimed to evaluate treatment of BMNG using intra-capsular total thyroid enucleation in comparison to standard total thyroidectomy. This is a prospective randomized controlled clinical trial conducted in a hospital in the period from December 2009 to December 2015. Of total 224 patients with clinically BMNG. 112 patients operated by intracapsular total thyroid enucleation (ITTE group) and the other 112 patients operated by standard total thyroidectomy (STT group). The minimal follow up period was 36 months. The mean operative time in ITTE group was (93.7 ± 9.6 min) compared to (86.9 ± 8.3 min) in STT group. Transient recurrent laryngeal nerve (RLN) palsy was 0% in ITTE group VS 7.1% in STT group. No cases (0%) developed permanent RLN palsy in ITTE group VS 0.9% in STT group. Symptomatic transient hypocalcaemia occurred in 1.8% in ITTE group VS 11.6% in STT group. No cases (0%) developed permanent hypocalcaemia in ITTE group VS 0.9% in STT group. No recurrence (0%) in both groups after minimal 3 years of follow up. Intracapsular Total thyroid enucleation technique is safe with the least serious complications, especially RLN injury and hypoparathyroidism, with no recurrence, but this technique still not radical so couldn't be used in suspicious cases for malignancy. Copyright © 2017 IJS Publishing Group Ltd. Published by Elsevier Ltd. All rights reserved.
Shaha, A R; Gujarati, R
Thyroid hemiagenesis is a rare embryological condition, predominantly in females (3:1) with a left lobe being absent. The associated diseases in the remaining thyroid lobe include benign adenoma, multinodular goiter, hyperthyroidism, chronic thyroiditis, and rarely carcinoma. The most common pathology involved in thyroid hemiagenesis is hyperthyroidism. Presence of carcinoma in a patient with hemiagenesis is quite rare and very few cases are reported in the world literature. We report a 30-year-old female who presented with left thyroid mass gradually increasing in size over a period of 3 months. The patient's pre-operative workup included a thyroid scan, which revealed a cold nodule in the left lobe with absent right lobe. A fine-needle aspiration biopsy was suspicious for papillary thyroid carcinoma. The patient underwent thyroid exploration and left thyroid lobectomy. The operative findings confirmed hemiagenesis of the right lobe and papillary carcinoma in the left lobe. All four parathyroids were in normal position. The purpose of this presentation is to discuss and review the literature on thyroid hemiagenesis and present a rare case of absent right thyroid lobe with carcinoma in the remaining left thyroid lobe.
Hänscheid, Heribert; Canzi, Cristina; Eschner, Wolfgang; Flux, Glenn; Luster, Markus; Strigari, Lidia; Lassmann, Michael
The EANM Dosimetry Committee Series "Standard Operational Procedures for Pre-Therapeutic Dosimetry" (SOP) provides advice to scientists and clinicians on how to perform patient-specific absorbed dose assessments. This particular SOP describes how to tailor the therapeutic activity to be administered for radioiodine therapy of benign thyroid diseases such as Graves' disease or hyperthyroidism. Pretherapeutic dosimetry is based on the assessment of the individual (131)I kinetics in the target tissue after the administration of a tracer activity. The present SOP makes proposals on the equipment to be used and guides the user through the measurements. Time schedules for the measurement of the fractional (131)I uptake in the diseased tissue are recommended and it is shown how to calculate from these datasets the therapeutic activity necessary to administer a predefined target dose in the subsequent therapy. Potential sources of error are pointed out and the inherent uncertainties of the procedures depending on the number of measurements are discussed. The theoretical background and the derivation of the listed equations from compartment models of the iodine kinetics are explained in a supplementary file published online only.
Cheng, Zhigang; Liang, Ping; Yu, Xiaoling; Han, Zhiyu; Liu, Fangyi; Yu, Jie; Li, Xin
Benign focal liver lesions (BFLLs) have become a common disease diagnosed in the clinical setting following the advancement of imaging techniques. The aim of the present study was to evaluate the safety and clinical outcomes of percutaneous microwave (MW) ablation, guided by ultrasound (US), for the treatment of BFLLs. Between May 2005 and January 2011, 44 BFLLs (mean maximum diameter, 33.9±13.1 mm) in 37 patients (23 women and 14 men) were treated by US-guided percutaneous MW ablation with cooled-shaft antennae. The pathological diagnosis of a BFLL was confirmed in 91.9% (34/37) of patients using a US-guided core needle biopsy prior to ablation. The BFLLs in the other 3 cases were diagnosed by typical presentations on contrast-enhanced imaging, as the patients refused to undergo biopsies. Five inclusion criteria, including indeterminate diagnoses of nodules on contrast-enhanced imaging prior to pathological verification, were recommended. The median follow-up period was 27.0 months (range, 6–73 months). The mean MW ablation energy and time were 55.0±41.6 kJ (range, 13.5–207 kJ) and 1,039.9±706.2 sec (range, 270–3,450 sec) per lesion, respectively. In total, 40 nodules (90.9%) were completely ablated, and no evidence of recurrence was demonstrated on contrast-enhanced imaging follow-up. The other 4 nodules (9.1%) were partially ablated due to the proximity of adjacent vital organs. Minor complications without sequelae included local pain and transient hemoglobinuria and no major complications occurred in peri-ablation. Overall, US-guided percutaneous MW ablation is a safe, effective and minimally invasive therapy for BFLLs in selected patients who are non-surgical candidates. PMID:28123578
Cheng, Zhigang; Liang, Ping; Yu, Xiaoling; Han, Zhiyu; Liu, Fangyi; Yu, Jie; Li, Xin
Benign focal liver lesions (BFLLs) have become a common disease diagnosed in the clinical setting following the advancement of imaging techniques. The aim of the present study was to evaluate the safety and clinical outcomes of percutaneous microwave (MW) ablation, guided by ultrasound (US), for the treatment of BFLLs. Between May 2005 and January 2011, 44 BFLLs (mean maximum diameter, 33.9±13.1 mm) in 37 patients (23 women and 14 men) were treated by US-guided percutaneous MW ablation with cooled-shaft antennae. The pathological diagnosis of a BFLL was confirmed in 91.9% (34/37) of patients using a US-guided core needle biopsy prior to ablation. The BFLLs in the other 3 cases were diagnosed by typical presentations on contrast-enhanced imaging, as the patients refused to undergo biopsies. Five inclusion criteria, including indeterminate diagnoses of nodules on contrast-enhanced imaging prior to pathological verification, were recommended. The median follow-up period was 27.0 months (range, 6-73 months). The mean MW ablation energy and time were 55.0±41.6 kJ (range, 13.5-207 kJ) and 1,039.9±706.2 sec (range, 270-3,450 sec) per lesion, respectively. In total, 40 nodules (90.9%) were completely ablated, and no evidence of recurrence was demonstrated on contrast-enhanced imaging follow-up. The other 4 nodules (9.1%) were partially ablated due to the proximity of adjacent vital organs. Minor complications without sequelae included local pain and transient hemoglobinuria and no major complications occurred in peri-ablation. Overall, US-guided percutaneous MW ablation is a safe, effective and minimally invasive therapy for BFLLs in selected patients who are non-surgical candidates.
Yue, Wen-Wen; Li, Xiao-Long; Xu, Hui-Xiong; Lu, Feng; Sun, Li-Ping; Guo, Le-Hang; He, Ya-Ping; Wang, Dan; Yin, Zhi-Qiang
This study is to compare the health-related quality of life (HRQoL) and cost-effectiveness of radiofrequency ablation (RFA) and open thyroidectomy (OT) for benign thyroid nodules (BTNs) treatment. HRQoL and utility were assessed for 404 BTN patients immediately before treatments (RFA:OT = 137:267) and at 6-month visit. A cost-effectiveness analysis was performed from societal perspective in the China context. Resource use (hospitalization, sick leaves) was collected. We used the net monetary benefit approach and computed cost-effectiveness acceptability curves for RFA and OT. Sensitivity analyses of costs of RFA were performed. At 6-month visit, patients treated with RFA had significantly better HRQoL than patients treated with OT on general health (68.5 versus 66.7, P = 0.029), vitality (71.3 versus 67.5, P < 0.001) and mental health (80.9 versus 79.3, P = 0.038). RFA was more effective than OT in terms of quality-adjusted life-years (QALYs; 0.01QALY/patient) but more expensive (US$823/patient). The probability that RFA would be cost effective at a US$50,000/QALY threshold was 15.5% in China, and it would be increased to 88.4% when price of the RFA device was lowered by 30%. RFA exhibited a significant improvement of HRQoL relative to OT, but is unlikely to be cost effective at its current price in short time.
Yue, Wen-Wen; Li, Xiao-Long; Xu, Hui-Xiong; Lu, Feng; Sun, Li-Ping; Guo, Le-Hang; He, Ya-Ping; Wang, Dan; Yin, Zhi-Qiang
This study is to compare the health-related quality of life (HRQoL) and cost-effectiveness of radiofrequency ablation (RFA) and open thyroidectomy (OT) for benign thyroid nodules (BTNs) treatment. HRQoL and utility were assessed for 404 BTN patients immediately before treatments (RFA:OT = 137:267) and at 6-month visit. A cost-effectiveness analysis was performed from societal perspective in the China context. Resource use (hospitalization, sick leaves) was collected. We used the net monetary benefit approach and computed cost-effectiveness acceptability curves for RFA and OT. Sensitivity analyses of costs of RFA were performed. At 6-month visit, patients treated with RFA had significantly better HRQoL than patients treated with OT on general health (68.5 versus 66.7, P = 0.029), vitality (71.3 versus 67.5, P < 0.001) and mental health (80.9 versus 79.3, P = 0.038). RFA was more effective than OT in terms of quality-adjusted life-years (QALYs; 0.01QALY/patient) but more expensive (US$823/patient). The probability that RFA would be cost effective at a US$50,000/QALY threshold was 15.5% in China, and it would be increased to 88.4% when price of the RFA device was lowered by 30%. RFA exhibited a significant improvement of HRQoL relative to OT, but is unlikely to be cost effective at its current price in short time. PMID:27883069
Lazar, Liora; Lebenthal, Yael; Segal, Karl; Steinmetz, Adam; Strenov, Yulia; Cohen, Maya; Yaniv, Isaac; Yackobovitch-Gavan, Michal; Phillip, Moshe
Prognostic factors for pediatric differentiated thyroid cancer (DTC) are not well established. The objective of the study was to retrospectively compare the postoperative risk-stratification systems: American Thyroid Association (ATA) risk categories, Schneider Children's Medical Center of Israel (SCMCI) score, and the response to initial therapy as predictors for disease outcome. Fifty-four DTC patients, median age at diagnosis 13.9 years (range 1.9-17 y), followed up for a median of 8.8 years (range 2.6-20.5 y) were stratified into prepubertal (n = 9), pubertal (n = 25), and postpubertal (n = 20) groups. All patients underwent total/near-total thyroidectomy; 48 received radioiodine therapy. The extent of DTC was evaluated by applying the ATA risk categories and the novel SCMCI score. Postoperative risk stratifications (low/intermediate/high) were determined using histopathological, laboratory, and imaging findings. Response to initial therapy (complete/acceptable/incomplete) was based on stimulated thyroglobulin and imaging results during the first 2 years of follow-up. The risk for recurrent/persistent disease, as assessed by the postoperative ATA risk-stratification system and the SCMCI score and by the response to initial therapy, was higher in the prepubertal group (P < .001, P = .002, and P = .02, respectively). Outcome prediction by the risk-stratification systems was applicable: ATA risk categories, P = .014, R(2) = 0.247, predictive ability 80.4%; SCMCI score, P < .001, R(2) = 0.435, predictive ability 86.3%; and response to initial therapy stratification, P < .001, R(2) = 0.789, predictive ability 96.1%. The proportion of variance explained by the ATA risk categories (0.25), SCMCI score (0.44), and response to initial therapy (0.79) indicated that the latter was the most precise predictor and that the SCMCI score reflected the disease outcome better than ATA risk categories. Our data confirm that the postoperative pediatric ATA stratification system and
Furuya, Fumihiko; Ying, Hao; Zhao, Li; Cheng, Sheue-yann
Study of molecular actions of thyroid hormone receptor β (TRβ) mutants in vivo has been facilitated by creation of a mouse model (TRβPV mouse) that harbors a knockin mutant of TRβ (denoted PV). PV, which was identified in a patient with resistance to thyroid hormone, has lost T3 binding activity and transcription capacity. The striking phenotype of thyroid cancer exhibited by TRβPV/PV mice has allowed the elucidation of novel oncogenic activity of a TRβ mutant (PV) [PAS1]beyond nucleus-initiated transcription. PV was found to physically interact with the regulatory p85α subunit of phosphatidylinositol 3-kinase (PI3K) in both the nuclear and cytoplasmic compartments. This protein-protein interaction activates the PI3K signaling by increasing phosphorylation of AKT, mammalian target of rapamycin (mTOR), and p70S6K. PV, via interaction with p85α, also activates the PI3K-integrin-linked kinase-matrix metalloproteinase-2 signaling pathway in the extra-nuclear compartment. The PV-mediated PI3K activation results in increased cell proliferation, motility, migration, and metastasis. In addition to affecting these membrane-initiated signaling events, PV affects [PAS2]the stability of the pituitary tumor-transforming gene (PTTG) product. PTTG (also known as securin), a critical mitotic checkpoint protein, is physically associated with TRβ or PV in vivo. Concomitant with T3-induced degradation of TRβ, PTTG is degraded by the proteasome machinery, but no such degradation occurs when PTTG is associated with PV. The degradation of PTTG/TRβ is activated by the direct interaction of the T3-bound TRβ with the steroid receptor coactivator-3 (SRC-3) that recruits a proteasome activator (PA28γ). PV that does not bind T3 cannot interact directly with SRC-3/PA28γ to activate proteasome degradation, and the absence of degradation results in an aberrant accumulation of PTTG. The PV-induced failure of timely degradation of PTTG results in mitotic abnormalities. PV, via novel
Guo, Z; Narbaitz, R; Fryer, J N
The effects of excess iodine on the development of the thyroid gland of chick embryos was assessed following injections of potassium iodide prior to incubation. Iodide injection resulted in a significantly greater thyroid gland weight (goitre) on Day 18 of incubation and a delay in hatching. Histological studies of the thyroid gland on Day 12 of incubation revealed that iodide injection had inhibited thyroid follicle development. On Day 14, however, the thyroid glands of the iodide-treated embryos were indistinguishable from controls and on Day 18 the thyroid follicles of the iodide-injected embryos were clearly hypertrophied. In agreement with these light microscopical observations, electron microscopical examination showed conspicuous development of rough endoplasmic reticulum in the follicle cells of both iodide-treated 14 and 18 days old embryos and in those of the corresponding controls. Immunocytochemical studies of the pituitary of 18 days old embryos revealed a depletion of immunoreactive TSH suggesting that the iodide-induced hypertrophy of the thyroid was mediated by an activation of the thyrotropes. Iodide treatment was without effect on plasma levels of T3 and T4 for Day 18 embryos suggesting that the compensatory hypertrophy of the thyroid gland was sufficient to maintain circulating levels of thyroid hormones. The present results demonstrate that, in the embryonic chick thyroid, excess iodine produces effects which occur in two phases. The first phase consists of a transitory inhibition of the formation of follicles; it is followed by a second phase of compensatory hypertrophy resulting in goitre. The first phase probably results from a direct inhibitory effect of iodine on the developing thyroid whereas the second phase probably reflects a stimulation of the thyroid by TSH. Images Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 8 Fig. 9 Fig. 10 PMID:1917670
Watkinson, John C
INTRODUCTION Thyroid disease is common, thyroid cancer is uncommon. Most goitres are investigated using blood tests, fine needle aspiration cytology together with ultrasound. Surgery usually entails either lobectomy or total thyroidectomy, and for malignancy, patients may need a neck dissection. Recently, significant advances have been made regarding mechanisms involved in both thyroid growth and function (goitrogenesis) and carcinogenesis at a molecular level. PATIENTS AND METHODS In the study cohort, 1113 patients had benign disease and 387 malignancy. For benign disease, 716 patients had lobectomy or isthmusectomy, 44 had near-total thyroidectomy and 318 a total thyroidectomy. For malignancy, patients received initial lobectomy (180) or total thyroidectomy (152). One hundred and eleven had completion surgery. Thirty patients had extensive surgery. Thyroid growth and function was investigated using 500 human thyroid cell primary cultures obtained at surgery, as well as in three animal models. The role of pituitary tumour transforming gene (PTTG), PTTG binding factor (PBF) and sodium iodide symporter (NIS) in thyroid cell function was then evaluated. RESULTS Temporary and permanent recurrent laryngeal nerve palsy rates were 2.4% and 0.4%. Other complications included temporary (21%) and permanent (3%) hypoparathyroidism, wound infection (1.2%), haematoma (1.2%) and poor scar (0.8%). Six patients have died. Regarding thyroid growth and function, TSH represents (either directly or indirectly) the main factor mediating thyroid follicular cell growth. For carcinogenesis, over-expression of the proto-oncogenes PTTG and PBF induces tumours in nude mice, and PTTG can induce proliferation of human thyroid cells and, in addition, both repress expression and function of NIS. PMID:20883601
Werner, R A; Lückerath, K; Schmid, J S; Higuchi, T; Kreissl, M C; Grelle, I; Reiners, C; Buck, A K; Lapa, C
Tyrosine kinase inhibitors (TKI) have shown clinical effectiveness in iodine-refractory differentiated thyroid cancer (DTC). The corresponding role of serum thyroglobulin (Tg) in iodine-refractory DTC has not been investigated yet. 9 patients (3 female, 61 ± 8y) with progressive iodine-refractory DTC starting on lenvatinib were considered. Tumor restaging was performed every 2-3 months including contrast-enhanced computed tomography (CT, RECIST 1.1). Serum Tg was measured and compared to imaging findings. After treatment initiation, serum Tg levels dropped in all patients with a median reduction of 86.2%. During long-term follow-up (median, 25.2 months), fluctuations in Tg could be observed in 8/9 subjects. According to RECIST, 6/9 subjects achieved a partial response or stable disease with the remaining 3/9 experiencing progressive disease (2/3 with Tg levels rising above baseline). All of the patients with disease progression presented with a preceding continuous rise in serum Tg, whereas tumor marker oscillations in the subjects with controlled disease were only intermittent. Initiation of lenvatinib in iodine-refractory DTC patients is associated with a significant reduction in serum Tg levels as a marker of treatment response. In the course of treatment, transient Tg oscillations are a frequent phenomenon that may not necessarily reflect morphologic tumor progression.
Kwon, Hyemi; Kim, Won Gu; Jeon, Min Ji; Song, Dong Eun; Lee, Yu-Mi; Sung, Tae-Yon; Chung, Ki-Wook; Yoon, Jong Ho; Hong, Suck Joon; Baek, Jung Hwan; Lee, Jeong Hyun; Kim, Tae Yong; Kim, Won Bae; Shong, Young Kee
Detecting persistent/recurrent disease of medullary thyroid carcinoma (MTC) is important. The tumor-node-metastasis (TNM) staging system is useful for predicting disease-specific mortality, but is a static system and does not include postoperative serum calcitonin levels. We have focused on the clinical usefulness of dynamic risk stratification (DRS) using the best response to the initial therapy in MTC patients. A total of 120 MTC patients were classified into three DRS groups based on their responses to initial therapy. Clinical outcomes were assessed according to TNM staging and DRS. In the DRS, 70, 23 and 7 % of the MTC patients were classified into excellent, biochemical incomplete, or structural incomplete response groups, respectively. On TNM staging, 37, 16, 13 and 35 % of patients were stages I-IV, respectively. There were significant differences in survivals according to TNM staging (p = 0.03) and DRS (p = 0.005). During the median follow-up of 6.2 years, 75 patients (63 %) demonstrated no evidence of disease (NED). About 60 and 17 % of patients in stages III and IV were NED, respectively. DRS predicted NED better than TNM staging according to the proportion of variance explained (PVE) (49.1 vs. 28.7 %, respectively). At the final follow-up, 88, 4 and 0 % of patients in excellent, biochemical incomplete, and structural incomplete response groups attained NED, respectively. DRS based on the best response to the initial therapy can provide useful prognostic information in addition to initial TNM staging for predicting of mortality, as well as the likelihood of NED in MTC patients.
Shim, Dae Bo; Ko, Kyung Min; Kim, Ji Hong; Lee, Won-Sang; Song, Mee Hyun
The study evaluated the relationship between the position that initially provoked vertigo and the affected semicircular canal (SCC) in patients with benign paroxysmal positional vertigo (BPPV), and aimed to predict the side affected by BPPV through history taking regarding the provoking position. Prospective study at a tertiary hospital. A total of 521 patients with BPPV involving the posterior or horizontal SCCs performed questionnaires at initial visit asking to choose the initial provoking position among the 10 positions corresponding to one of the three planes (roll, pitch, or yaw). After excluding 45 patients showing signs of simultaneous multiple canal or anterior canal involvement, the frequency of the provoking positions and the correlation between the side of the provoking position and the ear affected by BPPV were analyzed. There were 239 patients with posterior SCC BPPV (p-BPPV) and 237 patients with horizontal SCC BPPV (h-BPPV). The waking-up position was the most common provoking position in both types of BPPV. Statistically significant correlation was demonstrated between the side of the provoking position at the onset of vertigo and the affected side by BPPV (P < .01) in patients with p-BPPV as well as h-BPPV (geotropic type [Geo]), but not in patients with h-BPPV (apogeotropic type [Apo]). History taking regarding the side of provoking position at the onset of vertigo may help predict the side affected by BPPV in p-BPPV and h-BPPV (Geo). When h-BPPV (Apo) is suspected, further detailed examinations using additional localization methods should be performed. Copyright © 2013 The American Laryngological, Rhinological and Otological Society, Inc.
Selvakumar, Veda Padma Priya; Goel, Ashish; Kumar, Kapil
Cervical cord compression secondary to extension of a long standing papillary thyroid carcinoma as well as multiple cases of distal cord compression from occult follicular thyroid carcinoma have been reported. But cervical cord compression from Papillary Thyroid Carcinoma has not been reported so far. Forty eight year old lady presented with progressive quadriparesis of 2 months duration. MRI of the cervical spine showed destructive lesion with soft tissue component in vertebral bodies and posterior elements of C4-C6 vertebrae with cord compression along with a large thyroid mass extending to retrosternal region likely malignant. USG guided FNAC & Biopsy of thyroid lesion was inconclusive. She underwent Preoperative Selective angioembolisation for vertebral metastasis followed by total thyroidectomy with cervical cord decompression, bone grafting and plating. HPE reported follicular variant of Papillary Thyroid carcinoma. Four weeks postoperatively she underwent radioiodine ablation by 263 mci of I 131. She then received palliative EBRT to cervical and dorsal spine 30 Gy/10 fractions. She is alive and neurologically stable at 6 months follow up. Papillary thyroid carcinoma has an excellent prognosis. Hence a prompt management of primary disease and aggressive approach to metastatic lesion may prolong survival and allow favorable prognosis.
With over 2 000 articles published on thyroid cancer between January 1, 2006 and September 10, 2007 it is difficult to offer an updated and complete review on this malignancy. Thus, I elected to summarize papers published in 2007 on topics frequently overlooked in other reviews or books, and papers that are likely to be followed by interesting developments. Papers include: 1) the accuracy and currency of websites on thyroid cancer; 2) the detection of the V600E BRAF mutation in very small papillary thyroid cancers that are detected histologically; 3) the relationship between thyroid cancer and Hashimoto's thyroiditis or hepatitis C virus, an association that appears to be nonrandom; 4) the not negligible frequency of coexistence of thyroid cancer with primary hyperparathyroidism; 5) the value of ultrasound elastography of thyroid nodules in distinguishing malignant form benign lesions; 6) the value of percutaneous ethanol injection in the treatment of thyroid or nodal recurrences of thyroid cancer; 7) the relatively benign course of intrathyroid metastases from renal cell carcinoma; 8) the exceedingly rare thyroid paraganglioma, though the rate of reports has increased recently; and 9) the increase in serum calcitonin caused by chronic alcoholism, an increase that cannot be reversed by three weeks of alcohol weaning.
2015 American Thyroid Association Management Guidelines for Adult Patients with Thyroid Nodules and Differentiated Thyroid Cancer: The American Thyroid Association Guidelines Task Force on Thyroid Nodules and Differentiated Thyroid Cancer
Alexander, Erik K.; Bible, Keith C.; Doherty, Gerard M.; Mandel, Susan J.; Nikiforov, Yuri E.; Pacini, Furio; Randolph, Gregory W.; Sawka, Anna M.; Schlumberger, Martin; Schuff, Kathryn G.; Sherman, Steven I.; Sosa, Julie Ann; Steward, David L.; Tuttle, R. Michael; Wartofsky, Leonard
Background: Thyroid nodules are a common clinical problem, and differentiated thyroid cancer is becoming increasingly prevalent. Since the American Thyroid Association's (ATA's) guidelines for the management of these disorders were revised in 2009, significant scientific advances have occurred in the field. The aim of these guidelines is to inform clinicians, patients, researchers, and health policy makers on published evidence relating to the diagnosis and management of thyroid nodules and differentiated thyroid cancer. Methods: The specific clinical questions addressed in these guidelines were based on prior versions of the guidelines, stakeholder input, and input of task force members. Task force panel members were educated on knowledge synthesis methods, including electronic database searching, review and selection of relevant citations, and critical appraisal of selected studies. Published English language articles on adults were eligible for inclusion. The American College of Physicians Guideline Grading System was used for critical appraisal of evidence and grading strength of recommendations for therapeutic interventions. We developed a similarly formatted system to appraise the quality of such studies and resultant recommendations. The guideline panel had complete editorial independence from the ATA. Competing interests of guideline task force members were regularly updated, managed, and communicated to the ATA and task force members. Results: The revised guidelines for the management of thyroid nodules include recommendations regarding initial evaluation, clinical and ultrasound criteria for fine-needle aspiration biopsy, interpretation of fine-needle aspiration biopsy results, use of molecular markers, and management of benign thyroid nodules. Recommendations regarding the initial management of thyroid cancer include those relating to screening for thyroid cancer, staging and risk assessment, surgical management, radioiodine remnant ablation and therapy
Song, Julie H; Grand, David J; Beland, Michael D; Chang, Kevin J; Machan, Jason T; Mayo-Smith, William W
The objective of our study was to determine whether morphologic features of adrenal masses detected at initial contrast-enhanced MDCT can differentiate benign from malignant disease. Two hundred eleven adrenal masses (1-4 cm) detected during standard contrast-enhanced MDCT with a proven final diagnosis were retrospectively identified in 188 patients through a computer search of CT, PET/CT, and pathology reports. Three authors blinded to the diagnoses independently reviewed the contrast-enhanced MDCT images of the adrenal masses and evaluated their morphologic features: lesion margin (smooth, lobulated, or irregular), density (homogeneous or heterogeneous), and additional features of central low density and enhancing rim. Using these criteria, the readers categorized each mass as probably benign, indeterminate, or suspicious. There were 171 (81%) benign and 40 (19%) malignant adrenal masses. All malignant masses were metastases diagnosed in patients with known extraadrenal malignancy. For individual morphologic features in diagnosing malignancy, irregular margins had 30-33% sensitivity and 95-96% specificity and an enhancing rim had 5-13% sensitivity and 98-99% specificity. None of the imaging features was reliable in predicting benignity. When an adrenal mass was deemed suspicious by a reader, the sensitivities for malignancy ranged from 54% to 74% and specificities from 96% to 97%. Notably, no malignant lesions occurred in patients without a known history of cancer. At routine contrast-enhanced MDCT, adrenal masses with irregular margins or a thick enhancing rim are likely to be malignant. Smooth margins and homogeneous density can be seen in both benign and malignant adrenal masses and are insufficient for characterization.
Park, Hye Sun; Park, Auh Whan; Chung, Sae Rom; Choi, Young Jun; Lee, Jeong Hyun
Radiofrequency ablation (RFA) is a well-known, effective, and safe method for treating benign thyroid nodules and recurrent thyroid cancers. Thyroid-dedicated devices and basic techniques for thyroid RFA were introduced by the Korean Society of Thyroid Radiology (KSThR) in 2012. Thyroid RFA has now been adopted worldwide, with subsequent advances in devices and techniques. To optimize the treatment efficacy and patient safety, understanding the basic and advanced RFA techniques and selecting the optimal treatment strategy are critical. The goal of this review is to therefore provide updates and analysis of current devices and advanced techniques for RFA treatment of benign thyroid nodules and recurrent thyroid cancers. PMID:28670156
Xavier, Ana Carolina W; Maciel, Rui M B; Vieira, José Gilberto H; Dias-da-Silva, Magnus R; Martins, João R M
Thyroglobulin (Tg) is the major glycoprotein produced by the thyroid gland, where it serves as a template for thyroid hormone synthesis and as an intraglandular store of iodine. Measurement of Tg levels in serum is of great practical importance in the follow-up of differentiated thyroid carcinoma (DTC), a setting in which elevated levels after total thyroidectomy are indicative of residual or recurrent disease. The most recent methods for serum Tg measurement are monoclonal antibody-based and are highly sensitive. However, major challenges remain regarding the interpretation of the results obtained with these immunometric methods, particularly in patients with endogenous antithyroglobulin antibodies or in the presence of heterophile antibodies, which may produce falsely low or high Tg values, respectively. The increased prevalence of antithyroglobulin antibodies in patients with DTC, as compared with the general population, raises the very pertinent possibility that tumor Tg may be more immunogenic. This inference makes sense, as the tumor microenvironment (tumor cells plus normal host cells) is characterized by several changes that could induce posttranslational modification of many proteins, including Tg. Attempts to understand the structure of Tg have been made for several decades, but findings have generally been incomplete due to technical hindrances to analysis of such a large protein (660 kDa). This review article will explore the complex structure of Tg and the potential role of its marked heterogeneity in our understanding of normal thyroid biology and neoplastic processes.
Sweeney, Lori B; Stewart, Christopher; Gaitonde, David Y
Thyroiditis is a general term that encompasses several clinical disorders characterized by inflammation of the thyroid gland. The most common is Hashimoto thyroiditis; patients typically present with a nontender goiter, hypothyroidism, and an elevated thyroid peroxidase antibody level. Treatment with levothyroxine ameliorates the hypothyroidism and may reduce goiter size. Postpartum thyroiditis is transient or persistent thyroid dysfunction that occurs within one year of childbirth, miscarriage, or medical abortion. Release of preformed thyroid hormone into the bloodstream may result in hyperthyroidism. This may be followed by transient or permanent hypothyroidism as a result of depletion of thyroid hormone stores and destruction of thyroid hormone-producing cells. Patients should be monitored for changes in thyroid function. Beta blockers can treat symptoms in the initial hyperthyroid phase; in the subsequent hypothyroid phase, levothyroxine should be considered in women with a serum thyroid-stimulating hormone level greater than 10 mIU per L, or in women with a thyroid-stimulating hormone level of 4 to 10 mIU per L who are symptomatic or desire fertility. Subacute thyroiditis is a transient thyrotoxic state characterized by anterior neck pain, suppressed thyroid-stimulating hormone, and low radioactive iodine uptake on thyroid scanning. Many cases of subacute thyroiditis follow an upper respiratory viral illness, which is thought to trigger an inflammatory destruction of thyroid follicles. In most cases, the thyroid gland spontaneously resumes normal thyroid hormone production after several months. Treatment with high-dose acetylsalicylic acid or nonsteroidal anti-inflammatory drugs is directed toward relief of thyroid pain.
Steward, David L; Kloos, Richard T
Thyroid fine-needle aspiration biopsies are cytologically indeterminate in 15% to 30% of cases. When cytologically indeterminate thyroid nodules undergo diagnostic surgery, approximately three-quarters prove to be histologically benign. A negative predictive value of more than or equal to 94% for the Afirma Gene Expression Classifier (GEC) is achieved for indeterminate nodules. Most Afirma GEC benign nodules can be clinically observed, as suggested by the National Comprehensive Cancer Network Thyroid Carcinoma Guideline. More than half of the benign nodules with indeterminate cytology (Bethesda categories III/IV) can be identified as GEC benign and removed from the surgical pool to prevent unnecessary diagnostic surgery.
Menzilcioglu, Mehmet Sait; Duymus, Mahmut; Avcu, Serhat
Summary Thyroid gland disorders include benign and malignant thyroid nodules and diffuse thyroid disorders. The incidence of malignant thyroid nodules is low and the prognosis is good. The diagnosis of thyroid cancer and diffuse parenchymal disorders is generally based on clinical manifestations and histopathological evaluation. Ultrasonography has its place in the diagnostics and follow-up of thyroid disorders. Ultrasonographic elastography is a new, developing method that shows increase in clinical practice. In this study, we aimed to review the data on thyroid ultrasound elastography. PMID:27103947
Thyroid nodules are common and are frequently benign. The prevalence of thyroid nodules ranges from 3-7% (palpation) to 50% (ultrasonography). Thyroid cancer occurs in 5-10% of nodules. Thyroid ultrasonography (US) is not a screening test but all patients with palpable thyroid nodule should undergo US examination. US-guided fine-needle aspiration citology (FNC) is recommendend for nodules with suspicious features at US examination or when clinical risk factors occur. A radioisotope scan is useful if the TSH is low or suppressed to detect (benign) functioning nodules.
Chai, Chiling; Lemos, Luciano B; Kaelbling, Margot; Baliga, Mithra
A 7-year-old girl presented with a thyroid mass, elevated serum levels of calcitonin and carcinoembryonic antigen, as well as multiple mucosal nodules in the upper lip and tongue. Cytologic material obtained by fine-needle aspiration biopsy from the thyroid mass was diagnosed as medullary carcinoma and confirmed by immunohistochemical studies in the cell-block sections. Subsequent histopathologic examination showed involvement of both thyroid lobes by medullary carcinoma, and electron microscopic studies further confirmed the diagnosis. Molecular studies showed a point mutation in amino acid 918 in exon 16 of the RET proto-oncogene. Biopsies from the upper lip and tongue showed mucosal neuromas. Fine-needle aspiration biopsy is frequently used in the initial evaluation of thyroid nodules. This case illustrates the value of fine-needle aspiration biopsy as a safe and accurate diagnostic modality in the workup of pediatric thyroid nodules. Fine-needle aspiration biopsy should always be considered for the investigation of thyroid nodules in pediatric patients.
Lundgren, Catharina Ihre; Stalberg, Peter; Grodski, Simon; Sidhu, Stan; Sywak, Mark; Delbridge, Leigh
Various techniques for minimally invasive thyroid surgery (MITS), including endoscopic and video-assisted procedures, have now been described. Based on our units experience with minimally invasive parathyroidectomy via a lateral incision, a similar technique for minimally invasive thyroid lobectomy has been developed and assessed. The last 203 consecutive thyroid procedures using the MITS technique, performed between July 2002 and June 2006, comprised the study group. Inclusion criteria for initial surgery were: initial nodule < 3.0 cm; no preoperative evidence of malignancy; absence of clinical multinodular change. A 2.5-cm lateral incision, using a headlight illumination, provided optimal exposure. A total of 202 patients underwent 203 MITS procedures over the 4-year period, with one patient undergoing bilateral MITS. The procedures included 155 thyroid lobectomies and 48 nodule excisions; 31 of the patients underwent a minimally invasive parathyroidectomy (MIP) during which an ipsilateral thyroid nodule was removed. The mean tumour size was 17.3 mm, but the mean size of the thyroid lobe removed was 39.5 mm. Final diagnoses included benign multinodular goitre (26%), follicular adenoma (22%) and carcinoma (20%). The complication rate was low, with one permanent recurrent laryngeal nerve (RLN) palsy (anterior division only) (0.5%), four RLN neuropraxias which recovered (2%), and one haematoma not requiring re-operation (0.5%). The rate of complications was not significantly different from 819 conventional open hemithyroidectomies performed over the same period. MITS is a safe and feasible alternative to open thyroid surgery in appropriately selected cases. It offers a valuable option for diagnostic excision biopsy in patients with thyroid nodules demonstrating an atypical fine-needle biopsy whilst avoiding the need for a standard cervical "collar" incision.
Jeong, Shin Young; Hwang, Mi-Hye; Kim, Jung Eun; Kang, Sungmin; Park, Jeong Chan; Yoo, Jeongsoo; Ha, Jeoung-Hee; Lee, Sang-Woo; Ahn, Byeong-Cheol; Lee, Jaetae
Radioiodine (RI) such as (131)I or (124)I, can generate luminescent emission and be detected with an optical imaging (OI) device. To evaluate the possibility of a novel Cerenkov luminescence imaging (CLI) for application in thyroid research, we performed feasibility studies of CLI by RI in the thyroid gland and human anaplastic thyroid carcinoma cells expressing sodium iodide symporter gene (ARO-NIS). For in vitro study, FRTL-5 and ARO-NIS were incubated with RI, and the luminometric and CLI intensity was measured with luminometer and OI device. Luminescence intensity was compared with the radioactivity measured with γ-counter. In vivo CLI of the thyroid gland was performed in mice after intravenous injection of RI with and without thyroid blocking. Mice were implanted with ARO-NIS subcutaneously, and CLI was performed with injection of (124)I. Small animal PET or γ-camera imaging was also performed. CLI intensities of thyroid gland and ARO-NIS were quantified, and compared with the radioactivities measured from nuclear images (NI). Luminometric assay and OI confirmed RI uptake in the cells in a dose-dependent manner, and luminescence intensity was well correlated with radioactivity of the cells. CLI clearly demonstrated RI uptake in thyroid gland and xenografted ARO-NIS cells in mice, which was further confirmed by NI. A strong positive correlation was observed between CLI intensity and radioactivity assessed by NI. We successfully demonstrated dual molecular imaging of CLI and NI using RI both in vitro and in vivo. CLI can provide a new OI strategy in preclinical thyroid studies.
Thyroid stimulating hormone receptor (TSHR) plays a pivotal role in thyroid hormone metabolism. It is a major controller of thyroid cell function and growth. Mutations in TSHR may lead to several thyroid diseases, most commonly hyperthyroidism. Although its genetic and epigenetic alterations do not directly lead to carcinogenesis, it has a crucial role in tumor growth, which is initiated by several oncogenes. This article will provide a brief review of TSHR and related diseases. PMID:28117293
Thyroid stimulating hormone receptor (TSHR) plays a pivotal role in thyroid hormone metabolism. It is a major controller of thyroid cell function and growth. Mutations in TSHR may lead to several thyroid diseases, most commonly hyperthyroidism. Although its genetic and epigenetic alterations do not directly lead to carcinogenesis, it has a crucial role in tumor growth, which is initiated by several oncogenes. This article will provide a brief review of TSHR and related diseases.
Imai, Toshio; Onose, Jun-ichi; Hasumura, Mai; Takizawa, Tamotsu; Hirose, Masao
Effects of intestinal damage on thyroid carcinogenesis due to amitrole (AT) were examined in F344 male rats initiated with N-bis(2-hydroxypropyl)nitrosamine (DHPN). In experiment 1, rats were provided with diet containing 0.03% AT for 20 weeks after a single subcutaneous injection of DHPN (2800 mg/kg body weight), and concomitantly received 0.01% indomethacin (IM) in the diet to cause small intestinal damage or 1% dextran sodium sulfate (DSS) in the drinking water for induction of colitis following a schedule of intermittent 1-week administration and 1-week withdrawal for a total of 10 times. Groups without AT- and/or IM or DSS treatment were also included. Histopathological examination revealed significant reduction in the incidence and multiplicity of follicular cell adenomas and adenocarcinomas in the group concomitantly treated with IM, but no change in the DSS group, as compared with the AT alone group. In experiment 2, rats were similarly fed diet containing AT for 3 weeks with concomitant IM or DSS treatment after a DHPN initiation, and serum thyroid stimulating hormone levels were found to be significantly elevated only in the IM case. The increase in thyroid follicular cell proliferation due to AT was also clearly suppressed in the group concomitantly treated with IM. From these findings, IM-induced intestinal damage may inhibit thyroid carcinogeneisis in rats, although contributions of other factors, such as a direct inhibitory effect of IM to thyroid follicular cell proliferation cannot be ruled out.
Vásquez-Ciriaco, Sergio; Isla-Ortiz, David; Palomeque-Lopez, Antonio; García-Espinoza, Jaime Aron; Jarquín-Arremilla, Arturo; Lechuga-García, Néstor Alonso
The history of laparoscopic surgery in gynaecological diseases progressed with the advances of Semm, as well as with the development of tools, equipment, and energy that led to its development in all surgical areas, including oncology. To present the initial experience in the laparoscopic treatment of benign and malignant gynaecological disease in the Hospital Regional de Alta Especialidad in Oaxaca. An analysis was performed on a total of 44 cases, distributed into: type III radical hysterectomy for invasive cervical cancer, hysterectomy type I cervical cancer in situ, extrafascial hysterectomy for benign disease, routine endometrium, ovary and routine salpingo-oophorectomy. The variables included age, BMI, surgical time, bleeding, intraoperative and postoperative complications, conversion, hospital stay, and pathology report. Hysterectomy type III; age 40.2 years, BMI 25.8kg/m(2), 238ml bleeding, operative time 228min, 2.6-day hospital stay, intraoperative or postoperative complications, tumour size 1.1cm, 14 lymph nodes dissected, vaginal and negative parametrical edge. Type I hysterectomy cervical cancer in situ: 51 years, BMI 23.8kg/m(2), 80ml bleeding, operative time 127minutes, uterus of 9cm, length of stay of 2 days, a conversion by external iliac artery injury, with bleeding of 1500ml. Routine endometrium: 50.3 years, BMI 30.3kg/m(2), 83ml bleeding, operative time 180minutes, uterus 12.6cm, length of stay 2.3 days, no complications. The management of benign and malignant pelvic diseases using laparoscopy is feasible and safe, with shorter hospital stays and a prompt recovery to daily activities. Copyright © 2016 Academia Mexicana de Cirugía A.C. Publicado por Masson Doyma México S.A. All rights reserved.
... a family history of thyroid cancer and chronic goiter (enlarged thyroid). There are several types of thyroid ... Read More Anaplastic thyroid cancer Breathing difficulty Cancer Goiter - simple Metastasis Radiation therapy Thyroid cancer - papillary carcinoma ...
James, Benjamin; Nagar, Sapna; Kaplan, Sharone; Seng, Vanessa; Ahsan, Habibul; Angelos, Peter; Kaplan, Edwin L.; Guerrero, Marlon A.; Kuo, Jennifer H.; Lee, James A.; Mitmaker, Elliot J.; Moalem, Jacob; Ruan, Daniel T.; Shen, Wen T.; Grogan, Raymon H.
Background: The prevalence of thyroid cancer survivors is rising rapidly due to the combination of an increasing incidence, high survival rates, and a young age at diagnosis. The physical and psychosocial morbidity of thyroid cancer has not been adequately described, and this study therefore sought to improve the understanding of the impact of thyroid cancer on quality of life (QoL) by conducting a large-scale survivorship study. Methods: Thyroid cancer survivors were recruited from a multicenter collaborative network of clinics, national survivorship groups, and social media. Study participants completed a validated QoL assessment tool that measures four morbidity domains: physical, psychological, social, and spiritual effects. Data were also collected on participant demographics, medical comorbidities, tumor characteristics, and treatment modalities. Results: A total of 1174 participants with thyroid cancer were recruited. Of these, 89.9% were female, with an average age of 48 years, and a mean time from diagnosis of five years. The mean overall QoL was 5.56/10, with 0 being the worst. Scores for each of the sub-domains were 5.83 for physical, 5.03 for psychological, 6.48 for social, and 5.16 for spiritual well-being. QoL scores begin to improve five years after diagnosis. Female sex, young age at diagnosis, and lower educational attainment were highly predictive of decreased QoL. Conclusion: Thyroid cancer diagnosis and treatment can result in a decreased QoL. The present findings indicate that better tools to measure and improve thyroid cancer survivor QoL are needed. The authors plan to follow-up on these findings in the near future, as enrollment and data collection are ongoing. PMID:26431811
Meng, Xiaoyan; Ni, Cheng; Shen, Yaqi; Hu, Xuemei; Chen, Xiao; Li, Zhen; Hu, Daoyu
To investigate the value of quantitative analysis in dual energy spectral computed tomography (DESCT) for differentiating malignant gastric mucosal lesions from benign gastric mucosal lesions (including gastric inflammation [GI] and normal gastric mucosa [NGM]). This study was approved by the ethics committee, and all patients provided written informed consent. A total of 161 consecutive patients (63 with gastric cancer [GC], 48 with GI, and 50 with NGM) who underwent dual-phase contrast enhanced DESCT scans in the arterial phase (AP) and portal venous phase (PVP) were included in this study. Iodine concentration (IC) in lesions was derived from the iodine-based material-decomposition images and normalized to that in the aorta to obtain normalized IC (nIC). The ratios of IC and nIC between the AP and PVP were calculated. Diagnostic confidence for GC and GI was evaluated with reviewing the features including gastric wall thickness, focal, and eccentric on the conventional polychromatic images. All statistical analyses were performed by using statistical software SPSS 17.0 (SPSS, Chicago, IL). IC and nIC in GC differed significantly from those in GI and NGM, except for nICAP in comparing GC with GI. Mean nIC values of GC (0.18 ± 0.06 in AP and 0.62 ± 0.16 in PVP) were significantly higher than that of NGM (0.12 ± 0.03 in AP and 0.37 ± 0.08 in PVP) (all P < 0.05). There was also significant difference for IC values in GC, GI, and NGM (24.19 ± 8.27, 19.07 ± 5.82, and 13.61 ± 2.52 mg/mL, respectively, in AP and 28.00 ± 7.01, 24.66 ± 6.55, and 16.94 ± 3.06 mg/mL, respectively, in PVP). Based on Receiver Operating Characteristic Curve analysis, nIC and IC in PVP had high sensitivities of 88.89% and 90.48%, respectively, in differentiating GC from NGM, while the sensitivities were 71.43% and 88.89% during AP. Ratios IC and nIC ratios did not provide adequate diagnostic accuracy with their area under curves less than
Selch, Michael T; Lin, Kevin; Agazaryan, Nzhde; Tenn, Steve; Gorgulho, Alessandra; DeMarco, John J; DeSalles, Antonio A F
Stereotactic radiosurgery has proven a safe and effective treatment of cranial nerve sheath tumors. A similar approach should be successful for histologically identical spinal nerve sheath tumors. The preliminary results of linear accelerator-based spinal radiosurgery were retrospectively reviewed for a group of 25 nerve sheath tumors. Tumor location was cervical 11, lumbar 10, and thoracic 4. Thirteen tumors caused sensory disturbance, 12 pain, and 9 weakness. Tumor size varied from 0.9 to 4.1 cm (median, 2.1 cm). Radiosurgery was performed with a 60-MV linear accelerator equipped with a micro-multileaf collimator. Median peripheral dose and prescription isodose were 12 Gy and 90%, respectively. Image guidance involved optical tracking of infrared reflectors, fusion of amorphous silicon radiographs with dynamically reconstructed digital radiographs, and automatic patient positioning. Follow-up varied from 12 to 58 months (median, 18). There have been no local failures. Tumor size remained stable in 18 cases, and 7 (28%) demonstrated more than 2 mm reduction in tumor size. Of 34 neurologic symptoms, 4 improved. There has been no clinical or imaging evidence for spinal cord injury. One patient had transient increase in pain and one transient increase in numbness. Results of this limited experience indicate linear accelerator-based spinal radiosurgery is feasible for treatment of benign nerve sheath tumors. Further follow-up is necessary, but our results imply spinal radiosurgery may represent a therapeutic alternative to surgery for nerve sheath tumors. Symptom resolution may require a prescribed dose of more than 12 Gy. Copyright 2009 Elsevier Inc. All rights reserved.
Baker, Lauren J; Gill, Anthony J; Chan, Charles; Lin, Betty P C; Crawford, Bronwyn A
In 2006, a 58-year-old woman presented with thyrotoxicosis. She had undergone left hemithyroidectomy 14 years before for a benign follicular adenoma. Ultrasound imaging demonstrated bilateral cervical lymphadenopathy with enhanced tracer uptake in the left lateral neck on a Technetium-99m uptake scan. Fine-needle aspiration biopsy of a left lateral neck node was insufficient for a cytological diagnosis; however, thyroglobulin (Tg) washings were strongly positive. The clinical suspicion was of functionally active metastatic thyroid cancer in cervical lymph nodes. A completion thyroidectomy and bilateral cervical lymph node dissection were performed. Histology demonstrated benign multinodularity in the right hemithyroid, with bilateral reactive lymphadenopathy and 24 benign hyperplastic thyroid nodules in the left lateral neck that were classified as parasitic thyroid nodules. As there had been a clinical suspicion of thyroid cancer, and the hyperplastic/parasitic thyroid tissue in the neck was extensive, the patient was given ablative radioactive iodine (3.7 GBq). After 2 years, a diagnostic radioactive iodine scan was clear and the serum Tg was undetectable. The patient has now been followed for 7 years with no evidence of recurrence. Archived tissue from a left lateral neck thyroid nodule has recently been analysed for BRAF V600E mutation, which was negative. Thyrotoxicosis due to functional thyroid tissue in the lateral neck is very rare and may be due to metastatic thyroid cancer or benign parasitic thyroid tissue.Parasitic thyroid nodules should be considered as a differential diagnosis of lateral neck thyroid deposits, particularly where there is a history of prior thyroid surgery.Parasitic thyroid nodules may occur as a result of traumatic rupture or implantation from a follicular adenoma at the time of surgery.The use of ablative radioactive iodine may be appropriate, as resection of all parasitic thyroid tissue can prove difficult.BRAF mutational analysis
Spitzweg, C; Reincke, M; Gärtner, R
Thyroid emergencies are rare life-threatening endocrine conditions resulting from either decompensated thyrotoxicosis (thyroid storm) or severe thyroid hormone deficiency (myxedema coma). Both conditions develop out of a long-standing undiagnosed or untreated hyper- or hypothyroidism, respectively, precipitated by an acute stress-associated event, such as infection, trauma, or surgery. Cardinal features of thyroid storm are myasthenia, cardiovascular symptoms, in particular tachycardia, as well as hyperthermia and central nervous system dysfunction. The diagnosis is made based on clinical criteria only as thyroid hormone measurements do not differentiate between thyroid storm and uncomplicated hyperthyroidism. In addition to critical care measures therapy focusses on inhibition of thyroid hormone synthesis and secretion (antithyroid drugs, perchlorate, Lugol's solution, cholestyramine, thyroidectomy) as well as inhibition of thyroid hormone effects in the periphery (β-blocker, glucocorticoids).Cardinal symptoms of myxedema coma are hypothermia, decreased mental status, and hypoventilation with risk of pneumonia and hyponatremia. The diagnosis is also purely based on clinical criteria as measurements of thyroid hormone levels do not differ between uncomplicated severe hypothyroidism and myxedema coma. In addition to substitution of thyroid hormones and glucocorticoids, therapy focusses on critical care measures to treat hypoventilation and hypercapnia, correction of hyponatremia and hypothermia.Survival of both thyroid emergencies can only be optimized by early diagnosis based on clinical criteria and prompt initiation of multimodal therapy including supportive measures and treatment of the precipitating event.
Background A large amount of information has been collected on the molecular tumorigenesis of thyroid cancer. A low expression of c-KIT gene has been reported during the transformation of normal thyroid epithelium to papillary carcinoma suggesting a possible role of the gene in the differentiation of thyroid tissue rather than in the proliferation. The initial presentation of thyroid carcinoma is through a nodule and the best way nowadays to evaluate it is by fine-needle aspiration (FNA). However many thyroid FNAs are not definitively benign or malignant, yielding an indeterminate or suspicious diagnosis which ranges from 10 to 25% of FNAs. BRAF mutational analysis is commonly used to assess the malignancy of thyroid nodules but unfortunately it still leaves indeterminate diagnoses. The development of molecular initial diagnostic tests for evaluating a thyroid nodule is needed in order to define optimal surgical approach for patients with uncertain diagnosis pre- and intra-operatively. Methods In this study we extracted RNA from 82 FNA smears, 46 malignant and 36 benign at the histology, in order to evaluate by quantitative Real Time PCR the expression levels of c-KIT gene. Results We have found a highly preferential decrease rather than increase in transcript of c-KIT in malignant thyroid lesions compared to the benign ones. To explore the diagnostic utility of c-KIT expression in thyroid nodules, its expression values were divided in four arbitrarily defined classes, with class I characterized by the complete silencing of the gene. Class I and IV represented the two most informative groups, with 100% of the samples found malignant or benign respectively. The molecular analysis was proven by ROC (receiver operating characteristic) analysis to be highly specific and sensitive improving the cytological diagnostic accuracy of 15%. Conclusion We propose the use of BRAF test (after uncertain cytological diagnosis) to assess the malignancy of thyroid nodules at first
Wilson, Michelle E; Kim, Charles; Carrasco, Jacqueline
A 48-year-old smoker with a history of hyperthyroidism treated 10 years prior to presentation with radioactive iodine ablation of the thyroid gland presented to his ophthalmologist with a 2-week history of transient loss of vision in the right eye occurring for 1 to 2 hours each morning. He denied ocular pain, diplopia or change in the prominence of one or both eyes. Examination revealed 2 mm of relative proptosis on the right, bilateral temporal flare and lower lid retraction. There was minimal upper lid retraction and no evidence of lid lag. Ocular motility was full. Dilated fundoscopic examination revealed bilateral optic nerve edema, right more than left. CT of the orbit demonstrated enlargement of the extraocular muscles bilaterally with marked enlargement of the right medial rectus and left inferior rectus muscles resulting in crowding at the orbital apex bilaterally. Laboratory testing revealed the patient to be hyperthyroid. The patient was treated with high dose oral steroids followed by orbital radiation. Hyperthyroidism was managed by the patient's primary care physician. Visual symptoms rapidly improved with oral steroids and orbital radiation. Optic nerve edema completely resolved. Repeat CT imaging demonstrated a reduction in the enlargement of the extraocular muscles with relief of bilateral optic nerve compression.
YU, HUI; GE, XIN; PAN, WEIKANG; WANG, HUAIJIE; HUANG, QIANG; DONG, YU; GAO, YA; YU, JIANJUN
Minimally invasive video-assisted thyroidectomy (MIVAT), originally described by Miccoli, is considered to be the most widely practiced and easily reproducible procedure for selected patients with benign and/or malignant thyroid nodules. Modified techniques based on MIVAT, namely modified Miccoli's thyroid surgery (MMTS), were developed based on MIVAT. This study aimed to evaluate the preliminary results of MMTS compared with those of MIVAT. The enrolling criteria included a benign nodule <3.5 cm in diameter, a malignant tumor <2 cm, no previous neck surgery and no evidence of any suspected lymph node metastasis or local invasion. Unilateral lobectomy was considered for benign lesions and the additional dissection of central compartment (level VI) lymph nodes was applied for malignant disease. The modified techniques included carefully selecting the operative incision, expanding the operative space, embedding a drainage tube in situ and delicately suturing every layer inwards and crosswise, as well as measuring cervical motion. In addition to the comparison of surgical outcomes between MMTS and MIVAT, other surgical parameters, including operative time, blood loss, postoperative drainage, cosmetic satisfaction, peak angle of cervical rotation, length of hospitalization and complications, were retrospectively analyzed. A consecutive series of 70 patients, including 54 cases of benign and 16 cases of malignant disease, initially underwent MIVAT between April, 2008 and May, 2012, while 127 patients, including 98 benign and 29 malignant cases, subsequently underwent MMTS between September, 2011 and October, 2014. Patients who received MMTS exhibited significantly less blood loss (20.3±11.3 vs. 32.3±12.6 ml, P<0.01), lower volume of postoperative drainage (42.77±15.2 vs. 50.48±23.2 ml, P<0.01) and higher cosmetic satisfaction (94.6±3.5 vs. 88.9±2.7%, P<0.01), but a longer operative time (102±36 vs. 50.48±23.2 min, P<0.01) when compared with MIVAT. In addition, a
Werner, R. A.; Lückerath, K.; Schmid, J. S.; Higuchi, T.; Kreissl, M. C.; Grelle, I.; Reiners, C.; Buck, A. K.; Lapa, C.
Tyrosine kinase inhibitors (TKI) have shown clinical effectiveness in iodine-refractory differentiated thyroid cancer (DTC). The corresponding role of serum thyroglobulin (Tg) in iodine-refractory DTC has not been investigated yet. 9 patients (3 female, 61 ± 8y) with progressive iodine-refractory DTC starting on lenvatinib were considered. Tumor restaging was performed every 2–3 months including contrast-enhanced computed tomography (CT, RECIST 1.1). Serum Tg was measured and compared to imaging findings. After treatment initiation, serum Tg levels dropped in all patients with a median reduction of 86.2%. During long-term follow-up (median, 25.2 months), fluctuations in Tg could be observed in 8/9 subjects. According to RECIST, 6/9 subjects achieved a partial response or stable disease with the remaining 3/9 experiencing progressive disease (2/3 with Tg levels rising above baseline). All of the patients with disease progression presented with a preceding continuous rise in serum Tg, whereas tumor marker oscillations in the subjects with controlled disease were only intermittent. Initiation of lenvatinib in iodine-refractory DTC patients is associated with a significant reduction in serum Tg levels as a marker of treatment response. In the course of treatment, transient Tg oscillations are a frequent phenomenon that may not necessarily reflect morphologic tumor progression. PMID:27306607
Fernandes, Vera; Pereira, Tânia; Eloy, Catarina
The fine-needle aspiration has a significant role in assessing the malignancy risk of thyroid nodules. There is uncertainty regarding the value of repeat fine-needle aspiration in benign nodules. This study aims to evaluate the concordance of results in consecutive fine-needle aspiration and to study the relevance of repetition in benign results. Retrospective study of the 4800 thyroid nodules fine-needle aspiration held in Instituto de Patologia e Imunologia Molecular da Universidade do Porto between January 1, 2014 and May 2, 2016. Of the initial sample, we selected the repeated fine-needle aspiration on the same nodule. The first fine-needle aspiration result of the 309 nodules underwent revaluation was non-diagnostic in 103 (33.3%), benign in 120 (38.8%) and atypia/follicular lesion of undetermined significance in 86 (27.8%). The agreement between the first and second fine-needle aspiration was significantly higher in cases with an initial benign result (benign: 85.8%, non-diagnostic: 27.2% and atypia/follicular lesion of undetermined significance: 17.4%, p < 0.005). The fine-needle aspiration repeating motifs in initially benign nodules (n = 78) were repetition suggestion in 58, nodule growth in 17 and suspicious ultrasonographic features in 3. The fine-needle aspiration repetition in nodules with initial non-diagnostic and atypia/follicular lesion of undetermined significance result changed the initial diagnosis in a significant proportion of patients, modifying their therapeutic approach. The high concordance of results in initially benign nodules makes fine-needle aspiration repetition not cost-effective in most cases. The fine-needle aspiration should be repeated when the initial cytology result is non-diagnostic or atypia/follicular lesion of undetermined significance.
Siriweera, Eranga Himalee; Ratnatunga, Neelakanthi Vajira Illangakoon
Hashimoto's thyroiditis has been reported to be associated with many neoplastic and nonneoplastic thyroid pathologies. This retrospective study aims to determine the demographic profile of Hashimoto's thyroiditis in Sri Lankans, document ancillary pathologies in Hashimoto's thyroiditis, and determine whether there is an increased risk of occurrence of malignancies, benign neoplasms, and nonneoplastic benign lesions in Hashimoto's thyroiditis by comparing with thyroids showing multinodular goiters, follicular adenomas, and colloid nodules. The mean age of Hashimoto's thyroiditis is 43.3 years with the majority in the 41 to 60 year age group and a female to male ratio of 10.3 : 1. This study revealed a statistically significant increase of thyroid malignancies in association with Hashimoto's thyroiditis. The association of Papillary carcinoma, Non-Hodgkin's lymphoma, and Hurthle cell adenoma with Hashimoto's thyroiditis was statistically significant.
... Questionnaire Home Diseases and Conditions Benign Paroxysmal Positional Vertigo (BPPV) Benign Paroxysmal Positional Vertigo (BPPV) Condition Family HealthMenWomen Share Benign Paroxysmal Positional ...
Kim, Dong-Wook; Hah, J. Hun; An, Soo-Youn; Chang, Hak
Mandibular metastasis of thyroid carcinoma is extremely rare. We present the case of a 46-year-old woman who had bilateral huge cheek masses that had grown rapidly over several years. Intra-oral mucosal tissue biopsy and imaging work-up including computed tomography scan and magnetic resonance imaging were performed and the initial diagnosis was presumed to be central giant cell granuloma. Incidentally detected thyroid lesions were studied with ultra-sonography guided fine needle aspiration and diagnosed as simple benign nodules. Due to continuous oral bleeding and the locally destructive feature of the lesions, we decided to excise the mass surgically. To avoid functional deficit, a stepwise approach was performed: Firstly, the larger left mass was excised and the mandible was reconstructed with a fibular free flap. The final pathologic diagnosis was follicular thyroid cancer. Postoperative I-131 thyroid scan and whole body positron-emissions-tomography were performed. Right side mass was revealed as a thyroid malignancy. Multiple bony metastases were detected. Since further radioactive iodine therapy was required, additional total thyroidectomy and right side mandibulectomy with fibular free flap reconstruction was performed. The patient also underwent high dose radioactive iodine therapy and palliative extra-beam radiotherapy for the metastatic lumbar lesion. Follicular thyroid carcinoma should be considered as a differential diagnosis for mandibular mass lesions. PMID:23526730
Kim, Dong-Wook; Hah, J Hun; An, Soo-Youn; Chang, Hak; Kim, Kwang Hyun
Mandibular metastasis of thyroid carcinoma is extremely rare. We present the case of a 46-year-old woman who had bilateral huge cheek masses that had grown rapidly over several years. Intra-oral mucosal tissue biopsy and imaging work-up including computed tomography scan and magnetic resonance imaging were performed and the initial diagnosis was presumed to be central giant cell granuloma. Incidentally detected thyroid lesions were studied with ultra-sonography guided fine needle aspiration and diagnosed as simple benign nodules. Due to continuous oral bleeding and the locally destructive feature of the lesions, we decided to excise the mass surgically. To avoid functional deficit, a stepwise approach was performed: Firstly, the larger left mass was excised and the mandible was reconstructed with a fibular free flap. The final pathologic diagnosis was follicular thyroid cancer. Postoperative I-131 thyroid scan and whole body positron-emissions-tomography were performed. Right side mass was revealed as a thyroid malignancy. Multiple bony metastases were detected. Since further radioactive iodine therapy was required, additional total thyroidectomy and right side mandibulectomy with fibular free flap reconstruction was performed. The patient also underwent high dose radioactive iodine therapy and palliative extra-beam radiotherapy for the metastatic lumbar lesion. Follicular thyroid carcinoma should be considered as a differential diagnosis for mandibular mass lesions.
Zamiri, Mozheh; Jarrett, Paul; Snow, John
A 24-year-old woman presented with an 8-year history of a recurrent asymptomatic rash characterized by small erythematous papules which evolved to form atrophic porcelain white scars with a telangectatic rim. She had never had gastrointestinal or neurological symptoms. A short trial of aspirin did not alter the behavior of the disease. Histology confirmed the clinical diagnosis of Degos disease. Degos disease is a rare disorder that has been classified into the benign or malignant variety. The malignant type has a poor prognosis. Gastrointestinal involvement is the most frequent cause of death. The existence of patients with a prolonged, purely cutaneous or benign form has been increasingly recognized. It may be impossible to classify a patient at the time of initial presentation. Her progress is consistent with the benign form.
... high thyroid hormone levels in the blood) and hypothyroidism (low thyroid hormone levels in the blood). In postpartum thyroiditis, thyrotoxicosis occurs first followed by hypothyroidism. What causes postpartum thyroiditis? The exact cause is ...
... high thyroid hormone levels in the blood) and hypothyroidism (low thyroid hormone levels in the blood). In postpartum thyroiditis, thyrotoxicosis occurs first followed by hypothyroidism. What causes postpartum thyroiditis? The exact cause is ...
Kahraman, Serif Samil; Arli, Cengiz; Copoglu, Umit Sertan; Kokacya, Mehmet Hanifi; Colak, Sait
Patients with BPPV experienced short but intense anxiety and/or panic disorder, especially at the initial visit, but most patients recovered without medication with successful treatment. Recent studies have shown that people with dizziness report some psychological problems such as panic and agoraphobia and anxiety. The aim of this study was to evaluate anxiety and panic agorophobia levels in patients with benign paroxysmal positional vertigo on initial presentation and at the follow-up visit and compare the scores with the control group. All the 32 patients in the study had a diagnosis of BPPV confirmed by their history, typical subjective symptom reports, and characteristic positional nystagmus during the Dix-Hallpike test and/or Roll test. The patients were instructed to complete the standard forms of Beck anxiety inventory and panic agoraphobia scale questionnaire before and at 7 and 14 days after the canalith repositioning treatment. The validity scores of panic agoraphobia were statistically significantly higher in patients with BPPV than in the control group in each period (p < .001) and the validity scores of the Beck anxiety inventory were statistically significantly higher in patients with BPPV than in the control group at the first and second evaluation (p < .001).
Kang, Sang-Wook; Lee, So Hee; Ryu, Haeng Rang; Lee, Kang Young; Jeong, Jong Ju; Nam, Kee-Hyun; Chung, Woong Youn; Park, Cheong Soo
Since the introduction of endoscopic techniques in thyroid surgery, several trials of endoscopic lateral neck dissection have been conducted with the aim of avoiding a long cervical scar, but these endoscopic procedures require more effort than open surgery, mainly because of the relatively nonsophisticated instruments used. However, the recent introduction of surgical robotic systems has simplified the operations and increased the precision of endoscopic techniques. We have described our initial experience with robot-assisted modified radical neck dissection (MRND) in thyroid cancer using the da Vinci S system. From October 2007 to October 2009, 33 patients with thyroid cancer with lateral neck lymph node (LN) metastases underwent robot-assisted thyroidectomy and additional robotic MRND using a gasless, transaxillary approach. Clinicopathologic data were analyzed retrospectively. Mean patient age was 37 ± 9 years and the gender ratio (male to female) was 7:26. The mean operating time was 281 ± 41 minutes and mean postoperative hospital stay was 5.4 ± 1.6 days. The mean tumor size was 1.1 ± 0.5 cm and 20 cases (61%) had papillary thyroid microcarcinoma. The mean number of retrieved LNs was 6.1 ± 4.4 in the central neck compartment and 27.7 ± 11.0 in the lateral compartment. No serious postoperative complications, such as Horner's syndrome or major nerve injury, occurred. Robot-assisted MRND is technically feasible, safe, and produces excellent cosmetic results. Based on our initial experience, robot-assisted MRND should be viewed as an acceptable alternative method in patients with low-risk, well-differentiated thyroid cancer with lateral neck node metastasis. Copyright © 2010 Mosby, Inc. All rights reserved.
Mohamed, Hossam Eldin; Mohamed, Salah Eldin; Anwar, Muhammad Ahmed Farooq; Al-Qurayshi, Zaid; Sholl, Andrew; Thethi, Tina; Khan, Amna; Aslam, Rizwan; Kandil, Emad
We aim to investigate the significance of enlarged cervical lymph nodes (ECLN) identified by initial surgeon-performed ultrasound (US) as a tool for determining the risk of malignancy in the patients presenting with suspicious thyroid nodules. Radiological and surgical reports were retrospectively reviewed for the patients with suspicious thyroid nodules who underwent thyroidectomy and preoperative comprehensive neck US. Ultrasonographic features of the identified cervical lymph nodes were correlated with the final pathology report. Patients with malignancy other than papillary thyroid cancer (PTC) were excluded. The study consisted of 440 patients. On final pathology, PTC was found in 142 patients (32.3%), the remaining 298 (67.7%) exhibited benign findings. ECLN (>1 cm) were found in 66 (46.5%) patient with PTC compared to only 53 (17.8%) patients with benign nodules (P < 0.001). Of the 119 patients with ECLN, 54.6% had benign appearing ECLN with no suspicious features, 26.1% had one suspicious feature, and 19.3% had more than one suspicious features. Benign appearing ECLN had a positive predictive value (PPV) of 41.54%, negative predictive value (NPV) of 59.02%, sensitivity of 51.92%, and specificity of 48.65% in predicting malignancy as opposed to the absence of ECLN. While as opposed to benign looking ECLN, ECLN with only one suspicious feature had a PPV of 70.97%, NPV of 50.00%, sensitivity of 33.33%, and specificity of 83.02%, and ECLN with two or more suspicious feature had a PPV of 73.91%, NPV of 48.96%, sensitivity of 25.76%, and specificity of 88.68%. ECLN are associated with an increased likelihood of thyroid malignancy in the patients undergoing evaluation of a suspicious nodule. The risk of malignancy in thyroid nodules increases with the presence of suspicious ultrasonographic features on cervical lymph nodes.
Lang, B H-H; Wong, C K H; Chan, C T Y
Rapid rise in differentiated thyroid cancer (DTC) may impose a heavy economic burden on future healthcare. We aimed to calculate the average first-year monetary cost/patient for DTC and estimate the projected cost burden on our local healthcare system. Medical records of 270 clinically-relevant DTC patients were reviewed to calculate the amount of services utilized during the first-year. Only direct costs were included with estimates derived from government gazette. Cancer incidences were derived from the territory-wide cancer registry. Total annual cost equaled to the incidence multiplied by the cost/patient. The average first-year cost of DTC was USD11,560/patient. Initial surgery accounted for 66.9% of total cost. Male and female annual percentage increases for DTC were 4.86% and 4.28%, respectively. Female DTC is projected to surpass rectal cancer in 2019 (20.4/100,000 vs. 20.0/100,000) and colon cancer (47.2/100,000 vs. 46.8/100,000) in 2039. However, the projected incidence of DTC in 2026 would still be about one fourth that of CRC (19.5/100,000 vs. 83.2/100,000). The average first-year monetary cost of DTC care was relatively low. Initial surgery accounted for most of the cost. Despite a rapid incidence rise, the projected first-year cost for DTC is unlikely to impose substantial economic burden on our local future healthcare system. Copyright © 2015 Elsevier Ltd. All rights reserved.
Burger, A G; Philippe, J
Thyroid storm is a rapid decompensation of severe hyperthyroidism which can best be described by the three criteria of hyperthermia, tachycardia and altered mental state with severe agitation. There has to be a precipitating factor such as infection, iodine contamination, surgery or even I-131 treatment. Severe hyperthyroidism not fulfilling the criteria of thyroid storm can also be an indication for emergency treatment, particularly in the elderly with heart disease. Suppressed serum TSH and elevated free T4 levels are essential to confirm the diagnosis. When rapidly available, radioiodine uptake of the thyroid can be useful. Therapy aims at rapidly reducing the active circulating hormone pool, hypermetabolic state, tachycardia, and finally hormone synthesis. Thyroid secretion can be blocked by ioipanoic acid or ipodate while hypermetabolic state can be reduced with beta-blockers or calcium channel-blockers. Treatment of hyperthyroidism in patients with iodine contamination is a real therapeutic challenge. Myxoedema coma, a complication of severe hypothyroidism, is defined by hypothermia (rectal temperature less than 36 degrees C), bradycardia, slow mentation, precipitating factor such as infection or drug overdose, and increased serum creatine phosphokinase levels. Diagnosis of severe hypothyroidism should be confirmed by serum measurements of TSH and free T4. Treatment consists of general supporting measures including rewarming, correction of serum electrolyte disturbances, and adequate alimentation. Thyroid hormone treatment should initially be aggressive using either 300-400 micrograms of T4 or 20-40 micrograms of T3 intravenously. Cortisone therapy may be added. Patients should be under close monitoring as arrhythmias and myocardial infarction are frequent complications of myxoedema coma and/or its treatment with thyroid hormones.
Recently, thyroid nodules are found frequently when other imaging test was performed, and selection of diagnostic methods and its handling have become a problem clinically. Although it is possible to differentiate the malignant tumor from benign one using B-mode ultrasound, it can be obtained more detailed information in combination of other modalities such as color Doppler and tissue elasticity imaging (elastography). The malignant B-mode findings are irregular shape, indistinct border, hypoechoic and inhomogeneous internal echo, and fine calcification. CT/MRI is useful to evaluate the extention of thyroid cancer to adjacent organs beyond the thyroid capsule. It is also useful to evaluate distant metastases to lung or brain of thyroid cancer. In nuclear medicine, 125I scintigraphy is used to measure thyroid uptake rate, 131I scintigraphy is used to investigate the distant metastasis of thyroid cancer. It is necessary to be careful that some false-positive cases exist in 18FDG-PET.
Valdiserri, R.O.; Borochovitz, D.
Thyroid tissue from 90 patients with a history of therapeutic irradiation to the head and neck in childhood and adolescence was examined microscopically. In addition to the well-known observation that these individuals have an increased incidence of primary thyroid carcinoma, it was also demonstrated that they have an increased incidence of benign histologic changes. These changes represent a spectrum from nonspecific hyperplastic lesions to benign neoplasis and thyroidltis.
Rudqvist, Nils; Spetz, Johan; Schüler, Emil; Parris, Toshima Z.; Langen, Britta; Helou, Khalil; Forssell-Aronsson, Eva
Background 211At-labeled radiopharmaceuticals are potentially useful for tumor therapy. However, a limitation has been the preferential accumulation of released 211At in the thyroid gland, which is a critical organ for such therapy. The aim of this study was to determine the effect of absorbed dose, dose-rate, and time after 211At exposure on genome-wide transcriptional expression in mouse thyroid gland. Methods BALB/c mice were i.v. injected with 1.7, 7.5 or 100 kBq 211At. Animals injected with 1.7 kBq were killed after 1, 6, or 168 h with mean thyroid absorbed doses of 0.023, 0.32, and 1.8 Gy, respectively. Animals injected with 7.5 and 100 kBq were killed after 6 and 1 h, respectively; mean thyroid absorbed dose was 1.4 Gy. Total RNA was extracted from pooled thyroids and the Illumina RNA microarray platform was used to determine mRNA levels. Differentially expressed transcripts and enriched GO terms were determined with adjusted p-value <0.01 and fold change >1.5, and p-value <0.05, respectively. Results In total, 1232 differentially expressed transcripts were detected after 211At administration, demonstrating a profound effect on gene regulation. The number of regulated transcripts increased with higher initial dose-rate/absorbed dose at 1 or 6 h. However, the number of regulated transcripts decreased with mean absorbed dose/time after 1.7 kBq 211At administration. Furthermore, similar regulation profiles were seen for groups administered 1.7 kBq. Interestingly, few previously proposed radiation responsive genes were detected in the present study. Regulation of immunological processes were prevalent at 1, 6, and 168 h after 1.7 kBq administration (0.023, 0.32, 1.8 Gy). PMID:26177204
... limited to the use of Licensed Patent Rights for the diagnosis and prognosis of thyroid cancer. DATES... common forms of thyroid cancer such as follicular carcinoma. These results provide a molecular... Diagnostic Tool for Diagnosing Benign Versus Malignant Thyroid Lesions AGENCY: National Institutes of...
Granados-García, Martín; Cortés-Flores, Ana Olivia; del Carmen González-Ramírez, Imelda; Cano-Valdez, Ana María; Flores-Hernández, Lorena; Aguilar-Ponce, José Luis
Thyroid cancer presents as nodules. Thyroid nodules are frequent, but only 5-30% are malignant. Fine needle aspiration biopsy (FNAB) is useful for initial evaluation; nevertheless, malignancy is uncertain when follicular neoplasm is reported. Some factors can be associated with malignancy. Therefore, we analyzed our follicular neoplasms in order to identify those factors associated with a higher risk of malignancy. We analyzed the clinical files of consecutive patients with cytological diagnoses of follicular neoplasm. From 1,005 cases of thyroid nodules, 121 were follicular neoplasms according to cytology. Of these, 75 were surgically treated. Definitive report showed 45 benign (60%) and 30 malignant (40%) cases. Benign cases included 29 goiters, 11 follicular adenomas, and 5 cases of thyroiditis. Malignant cases were comprised of 12 papillary carcinomas, 4 follicular carcinomas, 3 papillary carcinomas-follicular variant, 1 lymphoma, 1 teratoma, 5 medullary carcinomas, 2 insular carcinomas, 1 anaplastic carcinoma and 1 metastatic breast carcinoma. Tumor size of benign lesions was 3.43 ± 2.04 cm, and 4.67 ± 2.78 (p = 0.049) for malignant lesions. Age was 46.95 ± 15.39 years for benign lesions and 48.67 ± 17.28 for malignant lesions (p = 0.66). Fifty percent of males showed malignancy vs. 37.7% of females (p < 0.005). Our results suggest that size and gender, but not age, are associated with cytological pattern. Ultrasonographic characteristics may be useful discriminating patients with a higher risk of malignancy. FNAB is a useful tool for initial evaluation of thyroid nodules, but clinical evaluation can enhance predictive value.
Yang, Ji H; Lindsey, Susan C; Camacho, Cléber P; Valente, Flávia O F; Germano-Neto, Fausto; Machado, Alberto L; Mamone, Maria Conceição O C; Brodskyn, Fábio; Biscolla, Rosa Paula M; Tuttle, Robert Michael; Dias-da-Silva, Magnus R; Maciel, Rui M B
Staging systems applied to medullary thyroid cancer (MTC) rely on initial clinical and pathological features and do not consider the response to treatment. To determine whether MTC staging can be improved by incorporating the first postoperative calcitonin measurement. Eighty-five patients being monitored for MTC (median follow-up 5 years) were retrospectively classified according to both the American Joint Committee on Cancer (AJCC) and the proposed combined risk stratification system (low, intermediate and high risk), which incorporates the first postoperative calcitonin measurement, using the outcomes no evidence of disease (NED), biochemical evidence of disease, structurally identifiable disease and death. Ninety per cent of AJCC I patients were classified as NED at final follow-up. When we added a postoperative calcitonin measurement, 95% low-risk patients were classified as NED at final follow-up. AJCC stages I and IV were associated, respectively, with no occurrence and a high rate (63%) of structurally identifiable disease. Stages II and III yielded similar predictions of structurally identifiable disease, 13% and 14%, respectively. When we included the postoperative calcitonin level, the patients with structural evidence of disease included none from the low-risk group, 10% from the intermediate group and 63% from the high-risk group. The proportion of variance explained analysis (PVE) was better for the combined risk stratification system (54%) than for the AJCC system alone (32%). Including the first postoperative calcitonin measurement with the anatomical staging system can better predict the clinical outcome of patients with MTC and refine the follow-up of these patients. © 2014 John Wiley & Sons Ltd.
Graciano, Agnaldo José; Chone, Carlos Takahiro; Fischer, Carlos Augusto; Bublitz, Giuliano Stefanello; Peixoto, Ana Jacinta de Aquino
The recently-proposed Bethesda reporting system has offered clinical recommendations for each category of reported thyroid cytology, including repeated fine-needle aspiration (FNA) for non-diagnostic and atypia/follicular lesions of undetermined significance, but there are no sound indications for repeated examination after an initial benign exam. To investigate the clinical validity of repeated FNA in the management of patients with thyroid nodules. The present study evaluated 412 consecutive patients who had repeated aspiration biopsies of thyroid nodules after an initial non-diagnostic, atypia/follicular lesion of undetermined significance, or benign cytology. The majority of patients were female (93.5%) ranging from 13 to 83 years. Non-diagnostic cytology was the most common indication for a repeated examination in 237 patients (57.5%), followed by benign (36.8%), and A/FLUS (5.6%) cytology. A repeated examination altered the initial diagnosis in 70.5% and 78.3% of the non-diagnostic and A/FLUS patients, respectively, whereas only 28.9% of patients with a benign cytology presented with a different diagnosis on a sequential FNA. Repeat FNA is a valuable procedure in cases with initial non-diagnostic or A/FLUS cytology, but its routine use for patients with an initial benign examination appears to not increase the expected likelihood of a malignant finding. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.
Staunton, M. D.; Greening, W. P.
In a survey of 293 patients with carcinoma of the thyroid, a goitre or enlarged lymph nodes in the neck were the commonest symptoms and a mass confined to one lobe the commonest sign. Hardness of the mass was an important diagnostic feature, and at least two-thirds of the tumour could be recognized before operation. It is suggested that the preoperative evaluation of thyroid swellings should be classified as benign, cancer suspected, and cancer probable. PMID:4800743
Lee, Jandee; Chung, Woong Youn
Robotic surgery is an innovation in thyroid surgery that may compensate for the drawbacks of conventional endoscopic surgery. A surgical robot provides strong advantages, including three-dimensional imaging, motion scaling, tremor elimination, and additional degrees of freedom. We review here recent adaptations, experience and applications of robotics in thyroid surgery. Robotic thyroid surgeries include thyroid lobectomy, total thyroidectomy, central compartment neck dissection, and radical neck dissection for benign and malignant thyroid diseases. Most of the current literature consists of case series of robotic thyroidectomies. Recent retrospective and prospective analyses have evaluated the safety and oncologic efficacy of robotic surgery for thyroid cancer. Although robotic thyroid surgery is often associated with longer operation times than conventional open surgery, robotic techniques have shown similar or superior levels of surgical completeness and safety compared with conventional open or endoscopic surgery. Compared to open thyroidectomy, robotic thyroidectomy has been associated with several quality-of-life benefits, including excellent cosmetic results, reduced neck pain and sensory changes, and decreased voice and swallowing discomfort after surgery. For surgeons, robotic surgery has improved ergonomics and has a shorter learning curve than open or endoscopic surgery. The advantages of robotic thyroid surgery over conventional surgery suggest that robotic thyroidectomy with or without neck dissection may become the preferred surgical option for thyroid diseases. Robotic thyroid surgery will likely continue to develop as more endocrine and head-and-neck surgeons are trained and more patients seek this newly developed surgical option. PMID:24783046
Dore, David D; Seeger, John D; Chan, K Arnold
As part of a regulatory postmarketing commitment, we assessed the risk of claims for thyroid and pancreatic cancer among users of exenatide using an active drug safety surveillance system. This active surveillance assessment used cohort methodology and commercial health insurance claims data to identify initiators of exenatide and propensity score-matched initiators of metformin or glyburide between June 2005 and September 2009, with up to 1 year of follow up through December 2009. The primary analysis estimated absolute and relative risk (RR) of inpatient or outpatient claims with diagnosis codes for thyroid neoplasm (benign or malignant) or pancreatic malignancies after exclusion of patients with a history of the same diagnosis at baseline. Among the matched comparison cohorts (N ≈ 32,800 each), there were 37 claims-suggested thyroid malignancies among exenatide initiators and 26 among metformin or glyburide initiators [RR 1.4; 95% confidence interval (CI) 0.8-2.4]. This association was attenuated when limited to inpatient thyroid cancer claims (RR 0.9; CI 0.3-2.6). Exenatide use was not associated with an increased risk of benign thyroid neoplasm (RR 0.7; CI 0.3-1.7), or pancreatic cancer (RR 0.8; CI 0.5-1.6). Use of exenatide was associated with a modestly higher incidence of inpatient and outpatient claims, but not inpatient claims for thyroid malignancies. Exenatide was not associated with higher risk of benign thyroid neoplasm or pancreatic cancer. Misclassification of outcomes and exposure, and residual confounding remain limitations of this analysis to be considered when interpreting the results. We have initiated a formal epidemiologic investigation to explore these relationships.
Suh, C H; Baek, J H; Park, C; Choi, Y J; Lee, J H
Sonography-guided fine-needle aspiration leads to relatively frequent cases of indeterminate cytology for the diagnosis of thyroid nodules. Our aim was to evaluate the efficacy and safety of core needle biopsy for the examination of thyroid nodules with initially indeterminate results on fine-needle aspiration. A computerized search of the MEDLINE and Embase databases was performed to identify relevant original articles. Studies investigating the use of core needle biopsy for thyroid nodules with initially indeterminate results on previous fine-needle aspiration were eligible for inclusion. The pooled proportions for nondiagnostic results, inconclusive results, malignancy on core needle biopsy, the ability of core needle biopsy to diagnose malignancy, and the related complications of the procedure were analyzed. The meta-analytic pooling was based on a random-effects model. Nine eligible studies, involving 2240 patients with 2245 thyroid nodules, were included. The pooled proportion for nondiagnostic results was 1.8% (95% CI, 0.4%-3.2%), and the pooled proportion for inconclusive results was 25.1% (95% CI, 15.4%-34.9%). The pooled proportion for malignancy was 18.9% (95% CI, 8.4%-29.5%). With regard to the diagnostic performance for malignancy, the sensitivity of core needle biopsy varied, ranging from 44.7% to 85.0%, but the specificity was 100% in all cases. No major complications of core needle biopsy were observed. The relatively small number of included studies and retrospective nature were limitations. Core needle biopsy has low nondiagnostic result rates and high specificity for the diagnosis of malignancy. It is a safe diagnostic technique with a higher diagnostic yield, especially when molecular testing is not available or fine-needle aspiration did not yield enough cells for molecular testing. © 2017 by American Journal of Neuroradiology.
Maia, Frederico F. R.; Zantut-Wittmann, Denise Engelbrecht
Although fine-needle aspiration cytology is considered to be the reference method for evaluating thyroid nodules, the results are inaccurate in approximately 10-30% of cases. Several studies have attempted to predict the risk of malignancy in thyroid nodules based on age, nodularity, thyrotropin values, thyroid autoimmune disease, hot/cold nodule status, and ultrasound parameters. However, no consensus has been found, and none of these parameters has significantly affected patient management. The management of indeterminate thyroid nodules and re-biopsies of nodules with initially benign cytological results remain important and controversial topics of discussion. The Bethesda cytological system and several studies on the use of molecular markers to predict malignancy from cytological samples of thyroid nodules need further clarification. More in-depth discussions among and continuous education of the specialists involved in treating thyroid disease are necessary to improve the management of these patients. This review aims to examine the clinical, laboratory, ultrasound, and scintigraphic parameters that can be used for thyroid nodule management. PMID:22948464
Faber, Kenneth; de Abreu, Andre Luis Castro; Ramos, Patrick; Aljuri, Nikolai; Mantri, Surag; Gill, Inderbir; Ukimura, Osamu; Desai, Mihir
To evaluate the safety and efficacy of a novel robotic tissue ablation system (PROCEPT Aquablation(™) System), in performing prostate ablation in a survival canine model. This novel technology uses a high-velocity saline stream that aims to selectively ablate prostatic glandular tissue while sparing collagenous structures such as blood vessels and capsule. Once the ablation is complete, a laser beam is captured by a low-pressure water jet to produce surface hemostasis. The extent and depth of ablation is predetermined by endoscopic and transrectal ultrasonography guidance. The procedure was performed in eight noncastrated male beagles aged 6 years or older (Acute 2, Chronic 6) through a previously created perineal urethrostomy. Aquablation time ranged from 40 to 84 seconds (mean 60.5 sec). There was no active bleeding in any of the dogs during or after Aquablation. Water jet-guided laser coagulation was used for purposes of monitoring its safety and efficacy. Five of the six dogs reached the predetermined 6-week mark. Complications included two dogs with infection successfully treated with antibiotics, a false passage created during catheter placement, and two bladder neck perforations (from mechanical insertion), one leading to euthanasia. Histologic evaluation at 6 weeks revealed a normal cellular architecture and full reepithelialization of the treatment cavity. We report the initial survival data in the animal model of a novel robotic device developed for managing symptomatic benign prostatic hyperplasia (BPH). Aquablation produces ablation of adenomatous elements while preserving collagenous structures and is a promising technology for surgical management of symptomatic BPH.
Fu, Xianshui; Guo, Limei; Zhang, Huabin; Ran, Weiqiang; Fu, Peng; Li, Zhiqiang; Chen, Wen; Jiang, Ling; Wang, Jinrui; Jia, Jianwen
To evaluate color-Doppler features predictive of focal Hashimoto's thyroiditis. A total of 521 patients with 561 thyroid nodules that underwent surgeries or gun biopsies were included in this study. These nodules were divided into three groups: focal Hashimoto's thyroiditis (104 nodules in 101 patients), benignity other than focal Hashimoto's thyroiditis (73 nodules in 70 patients), and malignancy (358 nodules in 350 patients). On color Doppler sonography, four vascularity types were determined as: hypovascularity, marked internal flow, marked peripheral flow and focal thyroid inferno. The χ2 test was performed to seek the potential vascularity type with the predictive ability of certain thyroid pathology. Furthermore, the gray-scale features of each nodule were also studied. The vascularity type I (hypovascularity) was more often seen in focal Hashimoto's thyroiditis than other benignity and malignancy (46% vs. 20.5% and 19%). While the type II (marked internal flow) showed the opposite tendency (26.9% [focal Hashimoto's thyroiditis] vs. 45.2% [other benignity] and 52.8% [malignancy]). However, type III (marked peripheral flow) was unable to predict any thyroid pathology. Importantly, type IV (focal thyroid inferno) was exclusive to focal Hashimoto's thyroiditis. All 8 type IV nodules appeared to be solid, hypoechoic, and well-defined. Using "focal thyroid inferno" as an indicator of FHT, the diagnostic sensitivity and specificity were 7.7% and 100% respectively. The vascularity type of "focal thyroid inferno" is specific for focal Hashimoto thyroiditis. Recognition of this particular feature may avoid unnecessary interventional procedures for some solid hypoechoic thyroid nodules suspicious of malignancy. Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.
... gland. The disorder can cause hyperthyroidism, followed by hypothyroidism. The thyroid gland is located in the neck, ... Later symptoms may be of an underactive thyroid ( hypothyroidism ), including fatigue and cold intolerance, until the thyroid ...
... your menstrual period. Your thyroid helps control your menstrual cycle. Too much or too little thyroid hormone can ... Problems getting pregnant. When thyroid disease affects the menstrual cycle, it also affects ovulation. This can make it ...
Hayashida, Naomi; Sekitani, Yui; Takahashi, Jumpei; Kozlovsky, Alexander A.; Gutevych, Oleksandr K.; Saiko, Aleksey S.; Nirova, Nina V.; Petrova, Anjela A.; Rafalskiy, Ruslan M.; Chorny, Sergey A.; Daniliuk, Valery V.; Anami, Masanobu; Yamashita, Shunichi; Takamura, Noboru
Objective After the accident at the Chernobyl Nuclear Power Plant (CNPP), the incidence of thyroid cancer increased among children. Recently, a strong relationship between solid thyroid nodules and the incidence of thyroid cancer was shown in atomic bomb survivors. To assess the prognosis of benign thyroid nodules in individuals living in the Zhitomir region of Ukraine, around the CNPP, we conducted a follow-up investigation of screening data from 1991 to 2000 in the Ukraine. Patients and Methods Participants of this study were 160 inhabitants with thyroid nodules (nodule group) and 160 inhabitants without thyroid nodules (normal control group) intially identified by ultrasonography from 1991 to 2000. All participants were aged 0 to 10 years old and lived in the same area at the time of the accident. We performed follow-up screening of participants and assessed thyroid nodules by fine needle aspiration biopsy. Results Among the nodule group participants, the number and size of nodules were significantly increased at the follow-up screening compared with the initial screening. No thyroid nodules were observed among the normal control group participants. The prevalence of thyroid abnormality, especially nodules that could be cancerous (malignant or suspicious by fine needle aspiration biopsy), was 7.5% in the nodule group and 0% in the normal control group (P<0.001). Conclusions Our study indicated that a thyroid nodule in childhood is a prognostic factor associated with an increase in the number and size of nodules in individuals living in the Zhitomir region of Ukraine. PMID:23209797
Robbins, J.; Merino, M.J.; Boice, J.D. Jr.; Ron, E.; Ain, K.B.; Alexander, H.R.; Norton, J.A.; Reynolds, J.
This conference focuses on the controversies about managing thyroid cancer, emphasizing the possibility that the treatment of patients with potentially fatal thyroid cancer may be improved. Although the mortality rate from thyroid cancer is low, it is the highest among cancers affecting the endocrine glands (excluding the ovary). Exposure to radiation during childhood in the 1930s and 1940s increased the incidence of but not the mortality from thyroid cancer, because these tumors are mainly papillary cancers developing in young adults. These rates may change as the exposed cohort ages. Risk factors that increase mortality include older patient age and the growth characteristics of the tumor at diagnosis, the presence of distant metastases, and cell type (for example, the tall-cell variants of papillary cancer, follicular cancer (to be distinguished from the more benign follicular variant of papillary cancer), medullary cancer, and anaplastic cancer). Local metastases in lymph nodes do not seem to increase the risk for death from papillary cancer, but they do increase the risk for death from follicular and medullary cancer. In the latter, mortality is decreased by the early detection and treatment of patients with the familial multiple endocrine neoplasia syndrome 2a. There are excellent tumor markers for differentiated cancer of the parafollicular and of the follicular cells. Measuring the calcitonin level allows early diagnosis of familial medullary cancer, whereas measuring the thyroglobulin level, although useful only after total thyroidectomy, allows early recognition of recurrence or metastases of papillary or follicular cancer. Initial surgery, protocols for follow-up, and the use of radioiodine for the ablation of any residual thyroid and the treatment of metastatic cancer are discussed.128 references.
Fridman, Mikhail; Savva, Natallia; Krasko, Olga; Mankovskaya, Svetlana; Branovan, Daniel I; Schmid, Kurt W; Demidchik, Yuri
The aim of this population-based study was to evaluate the clinical and pathological characteristics and outcome of papillary thyroid carcinoma (PTC) that have arisen in the Belarusian childhood population exposed to the radioactive fallout from the Chernobyl accident within a long-term period. The long-term treatment results were investigated in 1078 children and adolescents (<19 years old) with PTC who were surgically treated during the years 1990 through 2005. Patients had high rates of metastatic PTC at presentation, with 73.8% of cases having lymph node involvement and 11.1% having distant spread. The most influential factor for lymph node metastases at initial treatment was lymphatic vessel invasion (P < .0001) and for distant metastases, lateral lymph node involvement (P < .0001). The overall survival was 96.9% ± 0.9% with a median follow-up of 16.21 years, and 20-year event-free survival and relapse-free survival were 87.8% ± 1.6% and 92.3% ± 0.9%, respectively. Patients had significantly lower probability of both loco-regional (P < .001) and distant relapses (P = .005) after total thyroidectomy (TT) and radioactive iodine therapy (RAI). For loco-regional relapses after TT, only RAI influenced the prognosis significantly (P < .001). For distant relapses after TT, the refusal to treat with RAI (hazard ratio [HR] = 9.26), vascular invasion (HR = 8.68), and age at presentation (HR = 6.13) were significant risk factors. For loco-regional relapses after non-TT, the principal risk factors were age less than 15 years old at presentation (HR = 5.34) and multifocal growth of tumor (HR = 5.19). For distant relapses after non-TT, the lateral neck metastases were the only unfavorable factor (HR = 9.26). The outcome of PTC both in children and in adolescents exposed to the post-Chernobyl radioiodine fallout was rather favorable. TT with RAI is recommended for minimizing loco-regional or distant relapses.
Lee, Chung Hun; Jung, Yoon Yang; Chung, Yul Ri; Ryu, Han Suk
Preoperative cytologic diagnosis of solitary extramedullary plasmacytoma (SEP) presents a challenge to cytopathologists because this tumor rarely occurs as a primary thyroid malignant neoplasm. In this report, we provide the first description of liquid-based cytomorphologic findings of SEP observed on fine-needle aspiration biopsy (FNAB) of the thyroid. A 56-year-old woman with a history of Hashimoto thyroiditis presented with a growing nodule in the thyroid. The liquid-based preparation obtained from FNAB showed numerous dispersed plasmacytoid cells with occasional loosely cohesive aggregates of tumor cells. Cells were round to oval in shape, with eccentrically located nuclei. Hyalinized perinuclear vacuoles were found in the cytoplasm of the tumor cells. Initial cytological findings, including those of immunochemistry using a cell block preparation, were consistent with plasmacytoma. Histopathological examination subsequent to thyroidectomy revealed a plasmacytoma in the thyroid. Plasma cell neoplasms were not concurrently detected in tissues other than the thyroid. On the basis of preoperative FNAB findings, a specific diagnosis of SEP in the thyroid can be difficult because this tumor is rare. Moreover, diagnosis is impeded because SEP in the thyroid resembles other, more common thyroid lesions, including both benign and malignant neoplasms. Careful cytomorphologic examination and supportive studies may be required to fully confirm a diagnosis of SEP. © 2014 Wiley Periodicals, Inc.
Zayed, Ayman A; Ali, Moaath K Mustafa; Jaber, Omar I; Suleiman, Moh'd J; Ashhab, Ashraf A; Al Shweiat, Wajdi Mohammed; Momani, Munther Suliaman; Shomaf, Maha; AbuRuz, Salah Mohammed
The etiology of medullary thyroid carcinoma remains unknown. The aim of this study was to determine whether there is a significant association between medullary thyroid carcinoma and Hashimoto's thyroiditis in the histopathologic material of thyroidectomized patients. Retrospective cross-sectional study. In this study, we reviewed the medical records of all patients who underwent total thyroidectomy for different thyroid-related complaints between January 2000 and January 2012 at Jordan University Hospital-Amman, Jordan. To highlight relevant previously published studies addressing this topic, a literature search was conducted for English language studies reporting "medullary thyroid carcinoma" or "C-cell hyperplasia" in patients with Hashimoto's thyroiditis. Of the 863 patients with a mean age of 47.2 ± 12.3 years who underwent total thyroidectomy during the study period, 78 (9.04 %) were diagnosed with Hashimoto's thyroiditis, and 15 (1.74 %) had medullary thyroid carcinoma, 3 (20 %) of whom had coexistent Hashimoto's thyroiditis. A total of 683 (79.1 %) patients had benign thyroid disease, 67 (9.8 %) of whom had Hashimoto's thyroiditis. The difference between these rates was not statistically significant (p = 0.19). When examined by gender, 9 females had medullary thyroid carcinoma, 3 (33.3 %) of whom had coexistent Hashimoto's thyroiditis; by contrast, of 560 females with benign thyroid disease, 62 (11.1 %) had Hashimoto's thyroiditis (p = 0.04). Although this study population represents a small and single-institution experience, our results suggest that there might be an association between Hashimoto's thyroiditis and medullary thyroid carcinoma only in female patients who undergo total thyroidectomy.
Aćimović, Miodrag; Rafailović, Dragutin; Bumbaširević, Uroš; Babić, Uroš; Šantrić, Veljko; Stanić, Miodrag; Džamić, Zoran; Hadži-Djokić, Jovan
Our objective is to evaluate the efficacy, safety and 12 month outcome of a 980 nm diode laser with Twister fiber in the treatment of benign prostatic enlargement. Between February 2011 and January 2013, 73 patients with benign pros- tatic enlargement had undergone diode laser vaporization of prostate at our institution. The fol- lowing parameters were assessed at baseline, and after a follow-up period of 3 and 12 months: International Prostate Symptom Score, peak urinary flow rate, post-void residual urine volume, and quality of life score. The procedure was completed successfully in all patients with no intraoperative complications. At 12 months postoperatively the percentage improvements in IPSS was -69.09%, Qmax +197%, PVR -88.54%, and QoL -68.29%. Diode laser vaporization of prostate is safe and effective method for treatment of benign prostatic enlargement.
Chiarella, Giuseppe; Russo, Diego; Monzani, Fabio; Petrolo, Claudio; Fattori, Bruno; Pasqualetti, Giuseppe; Cassandro, Ettore; Costante, Giuseppe
The aim of this review was to analyze the existing literature concerning the relationship between Hashimoto thyroiditis (HT) and vestibular dysfunction. We used electronic databases (PubMed, EMBASE, Cochrane Library) to search and collect all published articles about the association between HT and vestibular disorders. Several observational and retrospective studies have postulated a relationship between thyroid autoimmunity and vestibular disorders. In most cases, an appropriate control group was lacking, and the impact of thyroid functional status could not precisely be established. In recent years, two well-designed prospective studies have provided convincing evidence that the association is not random. One article reported that patients with Ménière disease (MD) had a significantly higher prevalence of positive anti-thyroid autoantibody as compared to healthy controls. Moreover, more than half of MD patients had either positive anti-thyroid or non-organ-specific autoantibody titers, compared to less than 30% of both patients with unilateral vestibular paresis without cochlear involvement and healthy controls. Another study found that patients with benign paroxysmal positional vertigo (BPPV) had significantly higher serum thyroid-stimulating hormone and antithyroid autoantibody levels than healthy controls. Additionally, almost one-fifth of euthyroid patients with HT had signs of BPPV. The published results indicate that patients with MD or BPPV are potential candidates to also develop HT. Thus, in HT patients, the presence of even slight symptoms or signs potentially related to vestibular lesions should be carefully investigated. AITD = autoimmune thyroid disease; BPPV = benign paroxysmal positional vertigo; EH = endolymphatic hydrops; HT = Hashimoto thyroiditis; L-T4 = L-thyroxine; MD = Ménière disease; PS = Pendred syndrome; Tg = thyroglobulin; TPO = thyroid peroxidase; TSH = thyroid-stimulating hormone.
Muramatsu, Chisako; Schmidt, Robert A; Shiraishi, Junji; Li, Qiang; Doi, Kunio
The effect of the presentation of similar images for distinction between benign and malignant masses on mammograms was evaluated in the observer performance study. Images of masses were obtained from the Digital Database for Screening Mammography. We selected 50 benign and 50 malignant masses by a stratified randomization method. For each case, similar images were selected based on the size of masses and the similarity measures. Radiologists were shown images with unknown masses and asked to provide their confidence level that the lesions were malignant before and after the presentation of the similar images. Eleven observers, including three attending breast radiologists, three breast imaging fellows, and five residents, participated. The average areas under the receiver operating characteristic curves without and with the presentation of the similar images were almost equivalent. However, there were many cases in which the similar images caused beneficial effects to the observers, whereas there were a small number of cases in which the similar images had detrimental effects. From a detailed analysis of the reasons for these detrimental effects, we found that the similar images would not be useful for diagnosis of rare and very difficult cases, i.e., benign-looking malignant and malignant-looking benign cases. In addition, these cases should not be included in the reference database, because radiologists would be confused by these unusual cases. The results of this study could be very important and useful for the future development and improvement of a computer-aided diagnosis system.
Mane, Mayuresh; O'Neill, Ailbhe C; Tirumani, Sree Harsha; Shi, Min; Shinagare, Atul B; Fisher, David C
Primary thyroid lymphoma is a rare thyroid tumor accounting for only 5% of all thyroid malignancies. It is more common in patients with a background history of chronic thyroiditis. PET/CT is helpful in the initial staging and for follow up to assess treatment response.
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Huang, Jianbo; Jin, Liangbin; Ji, Guangyan; Xing, Lei; Xu, Chaobo; Xiong, Xiong; Li, Hongyuan; Wu, Kainan; Ren, Guosheng; Kong, Lingquan
Thyroid hormones have been shown to regulate breast cancer cells growth, the absence or reduction of thyroid hormones in cells could provoke a proliferation arrest in G0-G1 or weak mitochondrial activity, which makes cells insensitive to therapies for cancers through transforming into low metabolism status. This biological phenomenon may help explain why treatment efficacy and prognosis vary among breast cancer patients having hypothyroid, hyperthyroid and normal function. Nevertheless, the abnormal thyroid function in breast cancer patients has been considered being mainly caused by thyroid diseases, few studied influence of chemotherapy on thyroid function and whether its alteration during chemotherapy can influence the respose to chemotherapy is still unclear. So, we aimed to find the alterations of thyroid function and non-thyroidal illness syndrome (NTIS) prevalence druing chemotherapy in breast cancer patients, and investigate the influence of thyroid hormones on chemotherapeutic efficacy. Thyroid hormones and NTIS prevalence at initial diagnosis and during chemotherapy were analyzed in 685 breast diseases patients (369 breast cancer, 316 breast benign lesions). The influence of thyroid hormones on chemotherapeutic efficacy was evaluated by chemosensitization test, to compare chemotherapeutic efficacy between breast cancer cells with chemotherapeutics plus triiodothyronine (T3) and chemotherapeutics only. In breast cancer, NTIS prevalence at the initial diagnosis was higher and increased during chemotherapy, but declined before the next chemotherapeutic course. Thyroid hormones decreased signigicantly during chemotherapy. T3 can enhance the chemosensitivity of MCF-7 to 5-Fu and taxol, with progression from G0-G1 phase to S phase. The similar chemosensitization role of T3 were found in MDA-MB-231. We compared chemotherapeutic efficacy among groups with different usage modes of T3, finding pretreatment with lower dose of T3, using higher dose of T3 together
Background Thyroid hormones have been shown to regulate breast cancer cells growth, the absence or reduction of thyroid hormones in cells could provoke a proliferation arrest in G0-G1 or weak mitochondrial activity, which makes cells insensitive to therapies for cancers through transforming into low metabolism status. This biological phenomenon may help explain why treatment efficacy and prognosis vary among breast cancer patients having hypothyroid, hyperthyroid and normal function. Nevertheless, the abnormal thyroid function in breast cancer patients has been considered being mainly caused by thyroid diseases, few studied influence of chemotherapy on thyroid function and whether its alteration during chemotherapy can influence the respose to chemotherapy is still unclear. So, we aimed to find the alterations of thyroid function and non-thyroidal illness syndrome (NTIS) prevalence druing chemotherapy in breast cancer patients, and investigate the influence of thyroid hormones on chemotherapeutic efficacy. Methods Thyroid hormones and NTIS prevalence at initial diagnosis and during chemotherapy were analyzed in 685 breast diseases patients (369 breast cancer, 316 breast benign lesions). The influence of thyroid hormones on chemotherapeutic efficacy was evaluated by chemosensitization test, to compare chemotherapeutic efficacy between breast cancer cells with chemotherapeutics plus triiodothyronine (T3) and chemotherapeutics only. Results In breast cancer, NTIS prevalence at the initial diagnosis was higher and increased during chemotherapy, but declined before the next chemotherapeutic course. Thyroid hormones decreased signigicantly during chemotherapy. T3 can enhance the chemosensitivity of MCF-7 to 5-Fu and taxol, with progression from G0-G1 phase to S phase. The similar chemosensitization role of T3 were found in MDA-MB-231. We compared chemotherapeutic efficacy among groups with different usage modes of T3, finding pretreatment with lower dose of T3, using
It is proposed that most papillary thyroid cancers originate in infancy and childhood, based on the early rise in sporadic thyroid carcinoma incidence, the pattern of radiation-induced risk (highest in those exposed as infants), and the high prevalence of sporadic papillary thyroid cancers in children and adolescents (ultrasound screening after the Fukushima accident). The early origin can be linked to the growth pattern of follicular cells, with a high mitotic rate in infancy falling to very low replacement levels in adult life. The cell of origin of thyroid cancers, the differentiated follicular cell, has a limited growth potential. Unlike cancers originating in stem cells, loss of the usually tight link between differentiation and replicative senescence is required for immortalisation. It is suggested that this loss distinguishes larger clinically significant papillary thyroid cancers from micro-papillary thyroid cancers of little clinical significance. Papillary carcinogenesis can then be divided into 3 stages: (1) initiation, the first mutation in the carcinogenic cascade, for radiation-induced papillary thyroid cancers usually a RET rearrangement, (2) progression, acquisition of the additional mutations needed for low-grade malignancy, and (3) escape, further mutations giving immortality and a higher net growth rate. Most papillary thyroid cancers will not have achieved full immortality by adulthood, and remain as so-called micro-carcinomas with a very low growth rate. The use of the term ‘cancer’ to describe micro-papillary thyroid cancers in older patients encourages overtreatment and alarms patients. Invasive papillary thyroid tumours show a spectrum of malignancy, which at its lowest poses no threat to life. The treatment protocols and nomenclature for small papillary carcinomas need to be reconsidered in the light of the new evidence available, the continuing discovery of smaller lesions, and the model of thyroid carcinogenesis proposed. PMID
Thyroid neoplasms encompass a variety of lesions that range from benign adenomas to malignancies. These latter can be well-differentiated, poorly differentiated or undifferentiated (anaplastic) carcinomas. More than 95% of thyroid cancers are derived from thyroid follicular cells, while 2-3% (medullary thyroid cancers, MTC) originate from calcitonin producing C-cells. Over the last decade, investigators have developed a clearer understanding of genetic alterations underlying thyroid carcinogenesis. A number of point mutations and translocations are involved, not only in its tumorigenesis, but also as have potential use as diagnostic and prognostic indicators and therapeutic targets. Many occur in genes for several important signaling pathways, in particular the mitogen-activated protein kinase (MAPK) pathway. Sporadic (isolated) lesions account for 75% of MTC cases, while inherited MTC, often in association with multiple endocrine neoplasia (MEN) type 2A and 2B syndromes, constitute the remainder. However, non-MEN familial MTC may also occur. Advances in genetic testing have revolutionized the management of MTC, with prospects of genetic screening, testing and early prophylactic thyroidectomy. Ethical concerns of these advances are addressed. PMID:28610401
Chaudhary, Vikas; Bano, Shahina
Thyroid ultrasonography has established itself as a popular and useful tool in the evaluation and management of thyroid disorders. Advanced ultrasound techniques in thyroid imaging have not only fascinated the radiologists but also attracted the surgeons and endocrinologists who are using these techniques in their daily clinical and operative practice. This review provides an overview of indications for ultrasound in various thyroid diseases, describes characteristic ultrasound findings in these diseases, and illustrates major diagnostic pitfalls of thyroid ultrasound. PMID:23776892
Can, Ahmet Selçuk
Background The aim of this study is to perform a cost-effectiveness comparison between palpation-guided thyroid fine-needle aspiration biopsies (P-FNA) and ultrasound-guided thyroid FNA biopsies (USG-FNA). Methods Each nodule was considered as a case. Diagnostic steps were history and physical examination, TSH measurement, Tc99m thyroid scintigraphy for nodules with a low TSH level, initial P-FNA versus initial USG-FNA, repeat USG-FNA for nodules with initial inadequate P-FNA or USG-FNA, hemithyroidectomy for inadequate repeat USG-FNA. American Thyroid Association thyroid nodule management guidelines were simulated in estimating the cost of P-FNA strategy. American Association of Clinical Endocrinologists guidelines were simulated for USG-FNA strategy. Total costs were estimated by adding the cost of each diagnostic step to reach a diagnosis for 100 nodules. Strategy cost was found by dividing the total cost to 100. Incremental cost-effectiveness ratio (ICER) was calculated by dividing the difference between strategy cost of USG-FNA and P-FNA to the difference between accuracy of USG-FNA and P-FNA. A positive ICER indicates more and a negative ICER indicates less expense to achieve one more additional accurate diagnosis of thyroid cancer for USG-FNA. Results Seventy-eight P-FNAs and 190 USG-FNAs were performed between April 2003 and May 2008. There were no differences in age, gender, thyroid function, frequency of multinodular goiter, nodule location and diameter (median nodule diameter: 18.4 mm in P-FNA and 17.0 mm in USG-FNA) between groups. Cytology results in P-FNA versus USG-FNA groups were as follows: benign 49% versus 62% (p = 0.04), inadequate 42% versus 29% (p = 0.03), malignant 3% (p = 1.00) and indeterminate 6% (p = 0.78) for both. Eleven nodules from P-FNA and 18 from USG-FNA group underwent surgery. The accuracy of P-FNA was 0.64 and USG-FNA 0.72. Unit cost of P-FNA was 148 Euros and USG-FNA 226 Euros. The cost of P-FNA strategy was 534 Euros and USG
Can, Ahmet Selçuk
The aim of this study is to perform a cost-effectiveness comparison between palpation-guided thyroid fine-needle aspiration biopsies (P-FNA) and ultrasound-guided thyroid FNA biopsies (USG-FNA). Each nodule was considered as a case. Diagnostic steps were history and physical examination, TSH measurement, Tc99m thyroid scintigraphy for nodules with a low TSH level, initial P-FNA versus initial USG-FNA, repeat USG-FNA for nodules with initial inadequate P-FNA or USG-FNA, hemithyroidectomy for inadequate repeat USG-FNA. American Thyroid Association thyroid nodule management guidelines were simulated in estimating the cost of P-FNA strategy. American Association of Clinical Endocrinologists guidelines were simulated for USG-FNA strategy. Total costs were estimated by adding the cost of each diagnostic step to reach a diagnosis for 100 nodules. Strategy cost was found by dividing the total cost to 100. Incremental cost-effectiveness ratio (ICER) was calculated by dividing the difference between strategy cost of USG-FNA and P-FNA to the difference between accuracy of USG-FNA and P-FNA. A positive ICER indicates more and a negative ICER indicates less expense to achieve one more additional accurate diagnosis of thyroid cancer for USG-FNA. Seventy-eight P-FNAs and 190 USG-FNAs were performed between April 2003 and May 2008. There were no differences in age, gender, thyroid function, frequency of multinodular goiter, nodule location and diameter (median nodule diameter: 18.4 mm in P-FNA and 17.0 mm in USG-FNA) between groups. Cytology results in P-FNA versus USG-FNA groups were as follows: benign 49% versus 62% (p = 0.04), inadequate 42% versus 29% (p = 0.03), malignant 3% (p = 1.00) and indeterminate 6% (p = 0.78) for both. Eleven nodules from P-FNA and 18 from USG-FNA group underwent surgery. The accuracy of P-FNA was 0.64 and USG-FNA 0.72. Unit cost of P-FNA was 148 Euros and USG-FNA 226 Euros. The cost of P-FNA strategy was 534 Euros and USG-FNA strategy 523 Euros
Kim, Hoon Yub; Ryu, Woo Sang; Woo, Sang Uk; Son, Gil Soo; Lee, Eun Sook; Lee, Jae Bok; Bae, Jeoung Won
Radiofrequency ablation (RFA) recently has been applied to benign thyroid nodules, mainly for the cosmetic reasons, and limited cases of local recurrences or focal distant metastases of well-differentiated thyroid cancer, in the high-risk reoperative condition or for the palliative purpose. But no report has been made on the RFA for primary thyroid cancer to date. We report on a patient with primary papillary carcinoma of thyroid gland who had undergone RFA before the cytological diagnosis of malignancy, later referred and treated with robotic surgery successfully. We can learn the following lessons from our case; (1) the RFA for operable primary thyroid malignancy should be avoided, because of the possibility of remnant viable cancer and undetectable nodal metastasis, and (2) robotic or endoscopic thyroid surgery may be a feasible operative method for benign or malignant thyroid nodules previously treated with RFA.
Weinstock, Robert J; Lewis, Tashorn; Miller, Jared; Clarkson, Earl I
Thyroid crisis, also known as thyroid storm, is a rare complication of thyrotoxicosis that results in a hypermetabolic and hyperadrenergic state. This condition requires prompt recognition and treatment because the mortality from thyroid crisis approaches 30%. Thyrotoxicosis alone will usually not progress to thyroid crisis. Thyroid crisis will typically be precipitated by some concomitant event such as infection, iodine-containing contrast agents, medications such as amiodarone, pregnancy, or surgery. Trauma is a rare precipitator of thyroid crisis. Several published studies have reported thyroid crisis resulting from blunt or penetrating neck trauma. Significant systemic trauma, such as motor vehicle accidents, has also been reported to precipitate thyroid crisis. It is very unusual for minor trauma to precipitate thyroid crisis. In the present study, we report the case of a patient who had incurred relatively minor maxillofacial trauma and developed thyroid crisis 2 weeks after the initial trauma.
Combination of initial stimulation thyroglobulins and staging system by revised ATA guidelines can elaborately discriminate prognosis of patients with differentiated thyroid carcinoma after high-dose remnant ablation.
Kim, Min-Hee; Ko, Sun Hee; Bae, Ja-Seong; Lim, Dong-Jun; Baek, Ki-Hyun; Lee, Jong-Min; Kang, Moo-Il; Cha, Bong-Yun
The aim of this study was to evaluate prognostic role of thyroglobulin (Tg) levels at the time of ablation (A-Tg) and stimulation Tg levels at 6-12 months after remnant ablation (S-Tg) combined with revised American Thyroid Association (ATA) guidelines risk stratification. Data of 359 patients (median follow-up duration: 66.3 months) with papillary thyroid carcinoma who had high-dose remnant ablation were analyzed. The cutoff value of A-Tg to predict the persistent/recurrent disease was calculated by receiver operating characteristic curve analysis. In each risk group by ATA guidelines, the association of A-Tg with persistent/recurrent disease was evaluated. The role of A-Tg and ATA risk stratification in each S-Tg group (group with S-Tg <2 ng/mL, 2-10 ng/mL, or >10 ng/mL) was also evaluated. Tg response was determined by the difference between A-Tg and S-Tg with consideration of the dose of radioactive iodine ablation. A-Tg above 5.22 ng/mL was associated with persistent/recurrent disease in all risk groups by ATA guidelines. A-Tg above the cutoff value and ATA risk assessment was related to persistent/recurrent disease in patients with S-Tg 2 to 10 ng/mL (P = 0.003) and S-Tg above 10 ng/mL (P = 0.019). However, no difference in the incidence of persistent/recurrent disease was found according to Tg response. The scoring system made up of A-Tg, S-Tg, and ATA staging showed elaborate discrimination of prognosis. Risk stratification using combined scoring with initial stimulated Tg levels, including A-Tg and S-Tg, and staging system by revised ATA guidelines can effectively predict persistent/recurrent disease in patients with papillary thyroid carcinoma.
Alkhatib, Amer A.; Mahayni, Abdulah A.; Chawki, Ghaleb R.; Yoder, Leon; Elkhatib, Fateh A.; Al-Haddad, Mohammad
Objectives: There is limited endosonographic literature regarding thyroid gland pathology, which is frequently visualized during upper endoscopic ultrasound (EUS). Our objective was to assess the prevalence of benign and malignant thyroid lesions encountered during routine upper EUS within a cancer center setting. Materials and Methods: The data were prospectively collected and retrospectively analyzed. All upper EUS procedures performed between October 2012 and July 2014 were reviewed at a large referral cancer center. Data collected included patient demographics, preexisting thyroid conditions, thyroid gland dimensions, the presence or absence of thyroid lesions, and EUS morphology of lesions if present, and interventions performed to characterize thyroid lesions and pathology results when applicable. Results: Two hundred and forty-five EUS procedures were reviewed. Of these, 100 cases reported a detailed endosonographic examination of the thyroid gland. Most of the thyroid glands were endosonographically visualized when the tip of the scope was at 18 cm from the incisors. Twelve cases showed thyroid lesions, out of which three previously undiagnosed thyroid cancers were visualized during EUS (two primary papillary thyroid cancers and one anaplastic thyroid cancer). Transesophageal EUS-guided fine needle aspiration of thyroid lesions was feasible when the lesion was in the inferior portion of the thyroid gland, and the tip of the scope was at 18 cm or more from the incisors. Conclusions: Routine EUS examination may detect unexpected thyroid lesions including malignant ones. We encourage endosonographers to screen the visualized portions of the thyroid gland during routine withdrawal of the echoendoscope. PMID:27803906
Alkhatib, Amer A; Mahayni, Abdulah A; Chawki, Ghaleb R; Yoder, Leon; Elkhatib, Fateh A; Al-Haddad, Mohammad
There is limited endosonographic literature regarding thyroid gland pathology, which is frequently visualized during upper endoscopic ultrasound (EUS). Our objective was to assess the prevalence of benign and malignant thyroid lesions encountered during routine upper EUS within a cancer center setting. The data were prospectively collected and retrospectively analyzed. All upper EUS procedures performed between October 2012 and July 2014 were reviewed at a large referral cancer center. Data collected included patient demographics, preexisting thyroid conditions, thyroid gland dimensions, the presence or absence of thyroid lesions, and EUS morphology of lesions if present, and interventions performed to characterize thyroid lesions and pathology results when applicable. Two hundred and forty-five EUS procedures were reviewed. Of these, 100 cases reported a detailed endosonographic examination of the thyroid gland. Most of the thyroid glands were endosonographically visualized when the tip of the scope was at 18 cm from the incisors. Twelve cases showed thyroid lesions, out of which three previously undiagnosed thyroid cancers were visualized during EUS (two primary papillary thyroid cancers and one anaplastic thyroid cancer). Transesophageal EUS-guided fine needle aspiration of thyroid lesions was feasible when the lesion was in the inferior portion of the thyroid gland, and the tip of the scope was at 18 cm or more from the incisors. Routine EUS examination may detect unexpected thyroid lesions including malignant ones. We encourage endosonographers to screen the visualized portions of the thyroid gland during routine withdrawal of the echoendoscope.
Ditsch, Nina; Liebhardt, Susanne; Von Koch, Franz; Lenhard, Miriam; Vogeser, Michael; Spitzweg, Christine; Gallwas, Julia; Toth, Bettina
Recent studies indicate a possible relationship between hypothyroidism and breast cancer in vivo. In addition, oestrogen-like effects of thyroid hormones on breast cancer cell growth are seen in vitro. Therefore, this study evaluated thyroid function in breast cancer patients, women with benign breast tumour and healthy controls. Breast cancer patients (n=65), women with carcinoma in situ (n=13) or benign breast tumour (n=27), and healthy controls (n=38) were included in the study. Thyroid history was reported. Thyroid hormones (fT4, fT3, TSH) and thyroid antibodies (TPO, TRAK and TG) were determined. Statistical analysis was performed by Mann-Whitney U and Fisher's exact test (p<0.005 significant). fT3 and fT4 levels were highest in breast cancer patients, and differed significantly from controls (fT3 and fT4: p<0.001) as well as from patients with benign breast tumour (fT3: p=0.021; fT4: p=0.017). TSH was highest in the control group without reaching significance. With regard to TRAK antibodies, breast cancer patients showed the highest levels differing significantly from women with benign breast tumours (p=0.048). Significant differences in fT3/fT4 as well as TRAK levels were observed among breast cancer patients, women with benign breast tumours and healthy controls. Further studies using larger patient groups are part of ongoing research.
Chiha, Maguy; Samarasinghe, Shanika; Kabaker, Adam S
Thyroid storm, an endocrine emergency first described in 1926, remains a diagnostic and therapeutic challenge. No laboratory abnormalities are specific to thyroid storm, and the available scoring system is based on the clinical criteria. The exact mechanisms underlying the development of thyroid storm from uncomplicated hyperthyroidism are not well understood. A heightened response to thyroid hormone is often incriminated along with increased or abrupt availability of free hormones. Patients exhibit exaggerated signs and symptoms of hyperthyroidism and varying degrees of organ decompensation. Treatment should be initiated promptly targeting all steps of thyroid hormone formation, release, and action. Patients who fail medical therapy should be treated with therapeutic plasma exchange or thyroidectomy. The mortality of thyroid storm is currently reported at 10%. Patients who have survived thyroid storm should receive definite therapy for their underlying hyperthyroidism to avoid any recurrence of this potentially fatal condition.
Rosen, Jennifer E.; Goukassian, Ilona D.; A'Amar, Ousama M.; Bigio, Irving J.; Lee, Stephanie L.
Introduction: Thyroid cancer is the most common endocrine malignancy. The current gold standard for diagnosis, fine-needle aspiration (FNA) biopsy, yields 10-25% of indeterminate cytology results, leading to patients undergoing thyroidectomy for diagnosis. We assessed the technical potential of a miniaturized in vivo ESS (elastic light scattering spectroscopy) probe, built into an FNA needle assembly, to differentiate benign from malignant thyroid nodules. Methods: Under IRB approval, 15 patients in the endocrine clinic undergoing FNAB of a thyroid nodule had collection of ESS data using our novel miniaturized FNA probe. Using final surgical pathology as our gold standard, data post processing and visual inspection was completed. Results: 225 spectra were grouped and analyzed (120 benign, 30 malignant and 75 from indeterminate cytology). ESS probes demonstrated excellent reproducibility in use. Initial analysis of these preliminary data is promising, indicating distinction of spectral ESS features between malignant and benign conditions. Conclusion(s): An in vivo trial of an invasive miniaturized integrated ESS biopsy probe is acceptable to patients, and collection of ESS data is feasible and reliable. With development of a disease-specific algorithm, ESS could potentially be used as an in-situ real time intra-operative diagnostic tool or as a minimally invasive adjunct to conventional FNA cytology.
Ruchała, Marek; Szmyt, Krzysztof; Sławek, Sylwia; Zybek, Ariadna; Szczepanek-Parulska, Ewelina
Sonoelastography (USE) is a constantly evolving imaging technique used for the noninvasive and objective estimation of tissue stiffness. Several USE methods have been developed, including Quasi-Static or Strain Elastography and Shear Wave Elastography. The utility of USE has been demonstrated in differentiating between malignant and benign thyroid lesions. Recently, USE has been applied in the evaluation of thyroiditis and autoimmune thyroid disease (AITD).Thyroid inflammatory illnesses constitute a diverse group of diseases and may manifest various symptoms. These conditions may share some parallel clinical, biochemical, and ultrasonographic features, which can lead to diagnostic difficulties. USE may be an additional tool, supporting other methods in the diagnosis and treatment monitoring of thyroid diseases, other than thyroid nodular disease.The aim of this article was to analyse and summarise the available literature on the applicability of different elastographic techniques in the diagnosis, differentiation and monitoring of various types of thyroiditis and AITD. Advantages and limitations of this technique are also discussed.
Choi, Sang Hyun; Baek, Jung Hwan; Lee, Jeong Hyun; Choi, Young Jun; Hong, Min Ji; Song, Dong Eun; Kim, Jae Kyun; Yoon, Jong Ho; Kim, Won Bae
To evaluate the role of core-needle biopsy (CNB) by comparing the results of CNB and repeated fine-needle aspiration (FNA) for thyroid nodules with initially non-diagnostic FNA results. From October 2008 to December 2011, 360 nodules - 180 consecutive repeated FNAs and 180 consecutive CNBs -- from 360 patients (83 men, 277 women; mean age, 54.4 years) with initially non-diagnostic FNA results were analyzed retrospectively. The incidence of non-diagnostic results, inconclusive results, diagnostic surgery, and diagnostic performance of repeated FNA and CNB were assessed, and factors affecting second non-diagnostic results were evaluated. CNB achieved a significantly lower non-diagnostic and inconclusive rate than repeated FNA (1.1 % versus 40.0 %, P < 0.001; 7.2 % versus 72.0 %, P < 0.001). All diagnostic performances with CNB were higher than repeated FNA. The diagnostic surgery rate was lower with CNB than with repeated FNA (3.6 % versus 16.7 %, P = 0.047). Multivariate logistic regression analysis showed that repeated FNA was the most important factor for second non-diagnostic results (OR = 56.06, P < 0.001), followed by nodules with rim calcification (OR = 7.46, P = 0.003). CNB is more useful than repeated FNA for reducing the number of non-diagnostic and inconclusive results and for preventing unnecessary diagnostic surgery for thyroid nodules with initially non-diagnostic FNA results. • Core-needle biopsy achieved a lower number of non-diagnostic and inconclusive results. • Core-needle biopsy achieved better diagnostic performance. • Use of core-needle biopsy could prevent unnecessary diagnostic surgery. • Repeated fine-needle aspiration was significantly associated with a second non-diagnosis.
Hancock, S.L.; McDougall, I.R.; Constine, L.S.
The thyroid gland is the largest pure endocrine gland in the body and one of the organs most likely to produce clinically significant abnormalities after therapeutic external radiation. Radiation doses to the thyroid that exceed approximately 26 Gy frequently produce hypothyroidism, which may be clinically overt or subclinical, as manifested by increased serum thyrotropin and normal serum-free thyroxine concentrations. Pituitary or hypothalamic hypothyroidism may arise when the pituitary region receives doses exceeding 50 Gy with conventional, 1.8-2 Gy fractionation. Direct irradiation of the thyroid may increase the risk of Graves` disease or euthyroid Graves` ophthalmopathy. Silent thyroiditis, cystic degeneration, benign adenoma, and thyroid cancer have been observed after therapeutically relevant doses of external radiation. Direct or incidental thyroid irradiation increases the risk for well-differentiated, papillary, and follicular thyroid cancer from 15- to 53-fold. Thyroid cancer risk is highest following radiation at a young age, decreases with increasing age at treatment, and increases with follow-up duration. The potentially prolonged latent period between radiation exposure and the development of thyroid dysfunction, thyroid nodularity, and thyroid cancer means that individuals who have received neck or pituitary irradiation require careful, periodic clinical and laboratory evaluation to avoid excess morbidity. 39 refs.
Swirta, Jarosław S; Barczyński, Marcin
Haemorrhage after thyroid surgery is rare, but if it occurs it is a life-threatening condition necessitating emergency surgery. The aim of this study was to evaluate prevalence and risk factors of haemorrhage after thyroid surgery. A retrospective analysis was undertaken in a group of 8931 consecutive patients with various thyroid diseases treated in 2004-2013 at our institution. Potential risk factors for postoperative haemorrhage after thyroid surgery were analysed using logistic regression model. Haemorrhage after thyroid operation necessitating emergency surgery occurred in 40 (0.45%) of 8931 patients. None of the patients died within the perioperative period. Bleeding occurred within first 24 hours following surgery in 38 (95%) patients, and in the remaining 2 (5%) patients in more than 24 hours after initial surgery. The following risk factors for bleeding after thyroid operation were identified: male sex (OR 3.618; 1.762-7.430; p < 0.001), older age > or = 70 years (OR 3.052; 1.275-7.304; p = 0.012), surgery for hyperthyroidism (OR 2.873; 1.511-5.462; p = 0.001), smoking (OR 2.855; 1.502-5.428; p = 0.001), subtotal thyroidectomy in contrast to total thyroidectomy or lobectomy (OR 2.853; 1.356-6.004; p=0.006), and thyroid operation undertaken by resident in training in general surgery (OR 2.596; 1.393-4.837; p = 0.003). Haemorrhage after thyroid operation necessitating emergency surgical intervention occurs most frequently within first 24 hour following surgery. Hence, for safety reasons a minimum of 24-hour hospital stay is recommended in all patients with risk factors for postoperative bleeding after thyroid operation. Quality monitoring of thyroid surgery should include also risk factors for postoperative bleeding.
Spyropoulou, G A; Pavlidis, L; Trakatelli, M; Athanasiou, E; Pazarli, E; Sotiriadis, D; Demiri, E
Benign lesions of the breast in total are much more frequent than malignant ones. However, there are no epidemiologic data on the prevalence of benign or malignant tumours of the nipple, and the bibliography on benign nipple tumours in general is limited. To present some rare cases of benign nipple tumours and review the literature. Four cases of rare benign nipple tumours: neurofibromas, wart, leiomyoma and milium are presented. The literature search on benign nipple tumours was performed using MEDLINE, Pubmed, and Cochrane databases with limits: English language, human species and available abstract. The keyword used was 'benign nipple tumours'. The initial search retrieved 337 articles. The papers were reviewed and the articles that referred to benign lesions that appeared at the nipple specifically were identified. Different entities that were described included: neurofibroma, leiomyoma, milium, florid papillomatosis, syringomatous adenoma, nevoid hyperkeratosis, fibroma, pseudolymphoma and haemangioma. Differential diagnosis of benign tumours of the nipple can be demanding for the physicians. Many of the symptoms and signs like pruritus, serosanguinous discharge, lichenification, erosion and nodular enlargement are produced by either malignant or benign nipple lesions. Radiology can be unclear in the diagnosis of nipple abnormalities. Histological examination of the lesion can be the only definite answer in these cases. © 2014 European Academy of Dermatology and Venereology.
Gruber, R; Jaromi, S; Rudas, M; Pfarl, G; Riedl, C C; Flöry, D; Graf, O; Sickles, E A; Helbich, T H
To determine the accuracy of a probably benign assessment of non-palpable breast lesions (BI-RADS category 3) at mammography and/or ultrasound with immediate histological work-up. Stereotactic or ultrasound guided core needle breast biopsy (NBB) was performed to evaluate 288 lesions, which were prospectively assessed as BI-RADS category 3. Imaging findings included 195 masses, 73 calcification cases, 16 focal asymmetries, and four architectural distortion cases. After NBB, patients underwent either open surgical biopsy (OSB) (n=204) or mammographic follow-up (n=84) for at least 24 months. Histological results of NBB were compared with those of OSB. Three of the 288 lesions (1.0%) proved to be malignant at histological work-up, two of them were ductal carcinoma in situ (DCIS) and one of them was an invasive carcinoma. NBB revealed invasive carcinoma in 1/288 (0.35%) and atypical ductal hyperplasia (ADH) in 13/288 (4.5%) lesions. OSB revealed DCIS in 2/204 (1%) and invasive carcinoma in 1/204 (0.5%) lesions. The two DCIS were underestimated as ADH by NBB. The remaining 285 (99%) lesions proved to be benign at OSB or remained stable during follow-up. Confirmed by tissue diagnosis, the low likelihood of malignancy of prospectively assessed probably benign lesions is below the 2% threshold established for BI-RADS category 3. Imaging follow-up is a safe and effective alternative to immediate histological work-up for such lesions. Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.
Vuttariello, Emilia; Borra, Marco; Mauriello, Elvira; Calise, Celeste; D'Andrea, Barbara; Capiluongo, Anna; Fulciniti, Franco; Cipolletta, Anna; Monaco, Mario; Pezzullo, Luciano; Chiappetta, Gennaro
The most frequent initial manifestation of thyroid cancer is the appearance of a nodule. More than 20% of the general population has a palpable thyroid nodule and the percentage rises to 70% based on ultrasound identification. In 95% of cases the nodule is simply a hyperplastic or benign lesion. The most reliable diagnostic test for thyroid nodules is fine needle aspiration (FNA), but cytological discrimination between malignant and benign follicular neoplasms remains difficult. Cytological analysis is now, almost routinely, being combined with molecular genetics to enable the pathologist to make a more objective diagnosis. In this study, we performed the molecular analysis using a new simplified procedure that involves a panel of BRAF, RAS, RET and RET/PTC gene mutations in easily obtainable FNA samples, in the attempt to improve the efficacy of the FNA diagnosis of thyroid nodules and thus patient management. In this new procedure, PCR and sequencing analysis are used to detect point mutations, and, in parallel, RT-PCR is used to detect the chimeric RET/PTC1 and RET/PTC3 transcripts in RNA extracted from FNA.
Chitkara, Munish; Westphalen, Antonio; Kurhanewicz, John; Qayyum, Aliya; Poder, Liina; Reed, Galen; Coakley, Fergus V.
In a retrospective study of 71 voxels of benign peripheral zone tissue from 3 men who underwent endorectal magnetic resonance (MR) spectroscopic imaging of the prostate at both 1.5 and 3 T, 21 voxels that appeared more malignant at 3 T to either of two readers demonstrated significantly higher levels of choline and polyamines at 3 T compared to 1.5 T using a Wilcoxon ranked-sum test; awareness of this selective amplification of these metabolic signals at high field strength may help avoid overdiagnosis of prostate cancer. PMID:21724122
Pezzolla, Angela; Marzaioli, Rinaldo; Lattarulo, Serafina; Docimo, Giovanni; Conzo, Giovanni; Ciampolillo, Anna; Barile, Graziana; Anelli, Ferdinando Massimiliano; Madaro, Andrea
The diagnosis of incidental thyroid carcinoma in patients submitted to thyroidectomy for a benign disease is quite frequent. A retrospective analysis was performed on 455 patients submitted to surgical intervention in order to establish the incidence of this kind of carcinoma. Two hundred fifty-six patients (56%) were affected by benign disease (176 multinodular goiter, 12 uninodular goiter, 1 Plummer disease and 67 Basedow disease) and 202 (44%) by carcinoma. In 28 of 256 patients (11%), affected by benign disease, occurred a histological diagnosis of thyroid carcinoma, (10 papillary carcinoma, 1 follicular carcinoma, 29 papillary carcinoma follicular variant). In this study it's considered incidental thyroid carcinoma the one occurred in patients who never underwent Fine Needle Aspiration (FNA) and there were no suspicious features in all exams that may suggest the presence of carcinoma. Twenty-three of the 40 incidental carcinoma (57.5%) were microcarcinomas. Ten patients had a sincronous carcinoma. Actually, these patients are still in a follow up program and no recurrency of disease is occasionally observed. This study shows that the only way to put doubts on the real benignity of the disease is the fine needle aspiration; there are no other instruments that could identify the occurrence of the carcinoma. Moreover in the majority of cases the incidental carcinoma is a microcarcinoma, it doesn't reach significant volume, may be not centered by a FNA, but in most cases it's not really biologically aggressive.
Khan, Shoukat Hussain; Hassan, Masood ul; Bhau, Rajesh Singh
Objective: The aim of the study was to study the clinical profile in patients of differentiated thyroid cancer (DTC) with Iodine-131 avid distant metastasis at presentation. The study also attempted to evaluate factors influencing survival among these patients. Material and Methods: The cohort includes 35 patients (26 Female, 9 Male) studied retrospectively and prospectively over a period of 5 years at the Sher-I-Kashmir Institute of Medical Sciences, Srinagar, India. Results: The five years cause specific survival among patients of DTC with distant metastasis in the study group was 74.3%. The mean age at presentation was 41.4 years with female patients outnumbering the male patients in a ratio of 5:1. Papillary histopathology was the commonest in 65.7% followed by Follicular in 31.4% and poorly differentiated cancer in 2.9% of patients.31.4% 0f patients presented with relatively advanced AJC/UICC tumor stage of T3-T4. Bone was the commonest site of metastasis in 42.85% of patients followed by lung in 40% 0f patients. 82.9% of patients had only single organ metastasis. Therapeutic Radioiodine was administered in 31 (88.6%) patients. On univariate analysis of various factors that may be influencing the cause specific survival at 5 years, age ≥ 45 years, T3-T4 tumor stage, regional lymph node metastasis, follicular histopathology and non administration of radioiodine revealed significant (P<0.05) association with a poor 5 year survival. However multivariate analysis identified advanced tumor stage (T3-T4) and non administration of radioiodine to be the only independent factors associated with poor survival. Conclusion: Patients of differentiated thyroid cancer with distant metastasis having advanced tumor stage (T3-T4) and those in whom therapeutic radioiodine (I-131) is not administered seem to have an unfavorable prognosis in terms of a 5 years cause specific survival. PMID:26170565
Caballero Gullón, L; Carmona González, E; Martínez Estévez, A; Gómez Camarero, M P; Corral, J J; Borrego Dorado, I
Squamous cell carcinoma of thyroid is an uncommon, very aggressive neoplasm, having a poor prognosis and poor response to chemotherapy and radiotherapy. Surgery is the initial treatment of choice, although it often presents as a widespread disease at the time of diagnosis, usually with cervical swelling that causes most of the symptoms due to local infiltration or metastasis. Local infiltration from adjacent tumour and metastatic disease needs to be excluded from other primary epidermoid carcinomas, in order to make a correct diagnosis. This also requires the typical cytokeratin pattern seen in histological studies. The case is presented of a 53 year-old man with a medical history of hepatocarcinoma, with a cervical hypermetabolic lesion detected in an (18)F-FDG PET/CT performed to exclude widespread disease. The follow-up of this lesion with this technique and its usefulness is also described. Copyright © 2017 Elsevier España, S.L.U. y SEMNIM. All rights reserved.
... D, Davies TF, Schlumberger MJ, Hay ID, Larsen PR. Thyroid physiology and diagnostic evaluation of patients with thyroid disorders. In: Melmed S, Polonsky KS, Larsen PR, Kronenberg HM, eds. Williams Textbook of Endocrinology . 13th ...
... blocking production of thyroid hormones and resulting in hypothyroidism . TBII is not routinely tested, but TSI is ... autoimmune disease . A low level of thyroid hormones ( hypothyroidism ) can cause symptoms, such as: Weight gain Fatigue ...
... treated differently. Common thyroid disorders and problems include: Hypothyroidism Hypothyroidism is a disorder in which your thyroid doesn’ ... normal after you get better. If you have hypothyroidism, however, the levels of T4 in your blood ...
Presenting a multidisciplinary approach to the diagnosis and treatment of thyroid disease, this volume provides a comprehensive picture of current thyroid medicine and surgery. The book integrates the perspectives of the many disciplines that deal with the clinical manifestations of thyroid disorders. Adding to the clinical usefulness of the book is the state-of-the-art coverage of many recent developments in thyroidology, including the use of highly sensitive two-site TSH immunoradionetric measurements to diagnose thyroid activity; thyroglobulin assays in thyroid cancer and other diseases; new diagnostic applications of MRI and CT; treatment with radionuclides and chemotherapy; new developments in thyroid immunology, pathology, and management of hyperthyroidism; suppressive treatment with thyroid hormone; and management of Graves' ophthalmopathy. The book also covers all aspects of thyroid surgery, including surgical treatment of hyperthyroidism; papillary, follicular, and other carcinomas; thyroidectomy; and prevention and management of complications.
... the thyroid, a computerized tomography (CT) scan, or nuclear medicine tests, to diagnose and find the cause ... is having the scan for other health problems. Nuclear medicine tests. Nuclear medicine tests of the thyroid ...
... panel of genetic mutations linked to follicular or papillary thyroid cancer… Read More June 10, 2012 6 Cirugia De ... 2011 0 Gene Mutation Increases Risk of Recurrent Papillary Thyroid Cancer in Some Patients By admin | 2011 News Releases , ...
... body work normally. There are several types of cancer of the thyroid gland. You are at greater ... imaging tests, and a biopsy to diagnose thyroid cancer. Treatment depends on the type of cancer you ...
Peall, Kathryn J.; Kurian, Manju A.
Benign hereditary chorea (BHC) is a childhood-onset, hyperkinetic movement disorder normally with little progression of motor symptoms into adult life. The disorder is caused by mutations to the NKX2.1 (TITF1) gene and also forms part of the “brain–lung–thyroid syndrome”, in which additional developmental abnormalities of lung and thyroid tissue are observed. In this review, we summarize the main clinical findings in “classical” BHC syndrome and discuss more recently reported atypical features, including non-choreiform movement phenotypes. We highlight additional non-motor characteristics such as cognitive impairment and psychiatric symptoms, while discussing the evidence for BHC as a developmental disorder involving impaired neural migration and other multisystem developmental abnormalities. Finally, we will discuss the efficacy of available therapies in both affected pediatric and adult cohorts. Delineation of the BHC disease spectrum will no doubt expand our understanding of this disorder, facilitating better targeting of genetic testing and establish a framework for future clinical trials. PMID:26196025
Deutschmann, Michael; Khalil, Moosa; Bhayana, Shelly; Chandarana, Shamir
There are reports in the literature of anaplastic thyroid carcinoma in cervical lymph nodes with evidence of only papillary carcinoma in the thyroid gland. There have been no cases of this clinical scenario with only papillary microcarcinoma in the thyroid gland. We describe the case of a 60-year-old man who initially presented with an enlarged right, level 5, supraclavicular lymph node. Initial fine-needle aspiration demonstrated evidence of papillary thyroid carcinoma. The final pathologic finding in the thyroid gland showed only multiple foci of papillary thyroid microcarcinoma. The index neck mass showed evidence of anaplastic thyroid carcinoma. This is the first instance in the literature in which anaplastic thyroid carcinoma has appeared in metastatic cervical lymph nodes with only a focus of papillary microcarcinoma in the thyroid gland. With this case, we hope to build awareness of this rare finding.
The thyroid glands are a vulnerable organ to ionizing radiation. Indeed the epidemiological studies have revealed an increase in the incidences of thyroid cancer among atomic bomb survivors in Hiroshima and Nagasaki and radiation casualties in Chernobyl. The carcinogenic risk for the thyroids is dependent on radiation dose, and higher in younger people. Recent advances in molecular biology contribute to clarify the mechanisms for thyroid carcinogenesis at genetic and molecular levels. Here radiation-induced thyroid carcinogenesis is reviewed from epidemiological data to basic research.
Liu, Rengyun; Xing, Mingzhao
The 2013 discovery of TERT promoter mutations chr5, 1,295,228 C>T (C228T) and 1,295,250 C>T (C250T) in thyroid cancer represents an important event in the thyroid cancer field and much progress has occurred since then. This article provides a comprehensive review of this exciting new thyroid cancer field. The oncogenic role of TERT promoter mutations involves their creation of consensus binding sites for ETS transcriptional factors. TERT C228T is far more common than TERT C250T and their collective prevalence is, on average, 0%, 11.3%, 17.1%, 43.2%, and 40.1% in benign thyroid tumors, papillary thyroid cancer (PTC), follicular thyroid cancer, poorly differentiated thyroid cancer, and anaplastic thyroid cancer, respectively, displaying an association with aggressive types of thyroid cancer. TERT promoter mutations are associated with aggressive thyroid tumor characteristics, tumor recurrence, and patient mortality as well as BRAF V600E mutation. Coexisting BRAF V600E and TERT promoter mutations have a robust synergistic impact on the aggressiveness of PTC, including a sharply increased tumor recurrence and patient mortality, while either mutation alone has a modest impact. Thus, TERT with promoter mutations represents a prominent new oncogene in thyroid cancer and the mutations are promising new diagnostic and prognostic genetic markers for thyroid cancer, which, in combination with BRAF V600E mutation or other genetic markers (e.g., RAS mutations), are proving to be clinically useful for the management of thyroid cancer. Future studies will specifically define such clinical utilities, elucidate the biological mechanisms, and explore the potential as therapeutic targets of TERT promoter mutations in thyroid cancer. PMID:26733501
Liu, Rengyun; Xing, Mingzhao
The 2013 discovery of Telomerase reverse transcriptase (TERT) promoter mutations chr5, 1,295,228 C>T (C228T) and 1,295,250 C>T (C250T) in thyroid cancer represents an important event in the thyroid cancer field and much progress has occurred since then. This article provides a comprehensive review of this exciting new thyroid cancer field. The oncogenic role of TERT promoter mutations involves their creation of consensus binding sites for E-twenty-six transcriptional factors. TERT C228T is far more common than TERT C250T and their collective prevalence is, on average, 0, 11.3, 17.1, 43.2 and 40.1% in benign thyroid tumors, papillary thyroid cancer (PTC), follicular thyroid cancer, poorly differentiated thyroid cancer and anaplastic thyroid cancer, respectively, displaying an association with aggressive types of thyroid cancer. TERT promoter mutations are associated with aggressive thyroid tumor characteristics, tumor recurrence and patient mortality as well as BRAF V600E mutation. Coexisting BRAF V600E and TERT promoter mutations have a robust synergistic impact on the aggressiveness of PTC, including a sharply increased tumor recurrence and patient mortality, while either mutation alone has a modest impact. Thus, TERT with promoter mutations represents a prominent new oncogene in thyroid cancer and the mutations are promising new diagnostic and prognostic genetic markers for thyroid cancer, which, in combination with BRAF V600E mutation or other genetic markers (e.g. RAS mutations), are proving to be clinically useful for the management of thyroid cancer. Future studies will specifically define such clinical utilities, elucidate the biological mechanisms and explore the potential as therapeutic targets of TERT promoter mutations in thyroid cancer. © 2016 Society for Endocrinology.
Essig, Garth F; Porter, Kyle; Schneider, David; Debora, Arpaia; Lindsey, Susan C; Busonero, Giulia; Fineberg, Daniel; Fruci, Barbara; Boelaert, Kristien; Smit, Johannes W; Meijer, Johannes Arnoldus Anthonius; Duntas, Leonidas; Sharma, Neil; Costante, Giuseppe; Filetti, Sebastiano; Sippel, Rebecca S; Biondi, Bernadette; Topliss, Duncan J; Pacini, Furio; Maciel, Rui M B; Walz, Patrick C; Kloos, Richard T
To evaluate the diagnostic accuracy of fine-needle aspiration biopsy (FNAB) to preoperatively diagnose medullary thyroid cancer (MTC) among multiple international centers and evaluate how the cytological diagnosis alone could impact patient management. We performed a retrospective chart review of sporadic MTC (sMTC) patients from 12 institutions over the last 29 years. FNAB cytology results were compared to final pathologic diagnoses to calculate FNAB sensitivity. To evaluate the impact of cytology sensitivity for MTC according to current practice and to avoid confounding results by local treatment protocols, changes in treatment patterns over time, and the influence of ancillary findings (e.g., serum calcitonin), therapeutic interventions based on FNAB cytology alone were projected into 1 of 4 treatment categories: total thyroidectomy (TT) and central neck dissection (CND), TT without CND, diagnostic hemithyroidectomy, or observation. A total of 313 patients from 4 continents and 7 countries were included, 245 of whom underwent FNAB. FNAB cytology revealed MTC in 43.7% and possible MTC in an additional 2.4%. A total of 113 (46.1%) patients with surgical pathology revealing sMTC had FNAB findings that supported TT with CND, while 37 (15.1%) supported TT alone. In the remaining cases, diagnostic hemithyroidectomy and observation were projected in 32.7% and 6.1%, respectively. FNAB is an important diagnostic tool in the evaluation of thyroid nodules, but the low sensitivity of cytological evaluation alone in sMTC limits its ability to command an optimal preoperative evaluation and initial surgery in over half of affected patients.
Pacini, F; Vorontsova, T; Molinaro, E; Shavrova, E; Agate, L; Kuchinskaya, E; Elisei, R; Demidchik, E P; Pinchera, A
It is well recognized that the use of external irradiation of the head and neck to treat patients with various non-thyroid disorders increases their risk of developing papillary thyroid carcinoma years after radiation exposure. An increased risk of thyroid cancer has also been reported in survivors of the atomic bombs in Japan, as well as in Marshall Island residents exposed to radiation during the testing of hydrogen bombs. More recently, exposure to radioactive fallout as a result of the Chernobyl nuclear reactor accident has clearly caused an enormous increase in the incidence of childhood thyroid carcinoma in Belarus, Ukraine, and, to a lesser extent, in the Russian Federation, starting in 1990. When clinical and epidemiological features of thyroid carcinomas diagnosed in Belarus after the Chernobyl accident are compared with those of naturally occurring thyroid carcinomas in patients of the same age group in Italy and France, it becomes apparent that the post-Chernobyl thyroid carcinomas were much less influenced by gender, virtually always papillary (solid and follicular variants), more aggressive at presentation and more frequently associated with thyroid autoimmunity. Gene mutations involving the RET proto-oncogene, and less frequently TRK, have been shown to be causative events specific for papillary cancer. RET activation was found in nearly 70% of the patients who developed papillary thyroid carcinomas following the Chernobyl accident. In addition to thyroid cancer, radiation-induced thyroid diseases include benign thyroid nodules, hypothyroidism and autoimmune thyroiditis, with or without thyroid insufficiency, as observed in populations after environmental exposure to radioisotopes of iodine and in the survivors of atomic bomb explosions. On this basis, the authors evaluated thyroid autoimmune phenomena in normal children exposed to radiation after the Chernobyl accident. The results demonstrated an increased prevalence of circulating thyroid
Zheng, Bin; Tublin, Mitchell E.; Lederman, Dror; Klym, Amy H.; Brown, Erica D.; Gur, David
The incidence of thyroid cancer is rising faster than other malignancies and has nearly doubled in the United States (U.S.) in the last 30 years. However, classifying between malignant and benign thyroid nodules is often difficult. Although ultrasound guided Fine Needle Aspiration Biopsy (FNAB) is considered an excellent tool for triaging patients, up to 25% of FNABs are inconclusive. As a result, definitive diagnosis requires an exploratory surgery and a large number of these are performed in the U.S. annually. It would be extremely beneficial to develop a non-invasive tool or procedure that could assist in assessing the likelihood of malignancy of otherwise indeterminate thyroid nodules, thereby reducing the number of exploratory thyroidectomies that are performed under general anesthesia. In this preliminary study we demonstrate a unique hand-held Resonance-frequency based Electrical Impedance Spectroscopy (REIS) device with six pairs of detection probes to detect and classify thyroid nodules using multi-channel EIS output signal sweeps. Under an Institutional Review Board (IRB)-approved case collection protocol, this REIS device is being tested in our clinical facility and we have been collecting an initial patient data set since March of this year. Between March and August of 2011, 65 EIS tests were conducted on 65 patients. Among these cases, six depicted pathology-verified malignant cells. Our initial assessment indicates the feasibility of easily applying this REIS device and measurement approach in a very busy clinical setting. The measured resonance frequency differences between malignant and benign nodules could potentially make it possible to accurately classify indeterminate thyroid nodules.
Atkinson, Helen; England, James A; Rafferty, Amy; Jesudason, Vim; Bedford, Karen; Karsai, Laszlo; Atkin, Stephen L
Somatostatin analogues are commercially available and used for the management of acromegaly and neuroendocrine tumours, but the expression of the receptors as a target in thyroid disease has not been explored. To assess somatostatin (SST) and somatostatin receptor (SSTR1-5) expression in both normal and thyroid disorders, as a potential target for somatostatin analogue therapy, 67 thyroid tissue specimens were reviewed: 12 differentiated thyroid carcinomas, 14 follicular adenomas, 17 multinodular goitres, 14 Graves disease, 10 Hashimotos thyroiditis specimens and five normal thyroids. Tissue was immunostained for SST and SSTR1-5. Positivity and the degree of positivity were recorded by double-blinded observers. Somatostatin receptor expression was highly expressed in normal tissue for SSTR1, 3, 4 and 5 (5 of 5, 4 of 5, 4 of 5 and 5 of 5 respectively) whilst SST and SSTR 2a and b were not expressed at all. The commonest receptor expressed for all pathological subtypes grouped together was SSTR2b (63 specimens). The commonest receptors expressed in differentiated thyroid cancer were SSTR5 (11 of 12 specimens) and SSTR2b (10 of 12 specimens). The commonest receptor expressed in benign disease was SSTR2b (53 of 55 specimens). SSTR5 was significantly under-expressed in Graves disease (P < 0.05). This study illustrates that SSTR 1, 3, 4 and 5 are highly expressed in normal, benign and malignant thyroid tissue. SSTR 2a and 2b appear absent in normal tissue and present in benign and malignant thyroid tissue (P < 0.02). This suggests that focussed SSTR2 treatment may be a potential therapeutic target. © 2013 The Authors. International Journal of Experimental Pathology © 2013 International Journal of Experimental Pathology.
Papini, Enrico; Pacella, Claudio M; Hegedus, Laszlo
In patients with thyroid nodules, ultrasound (US) imaging represents an indispensable tool for assessment of the risk of malignancy. Over approximately four decades, innovative technology and successive improvements have facilitated its entry into the routine management and greatly improved its predictive value. When US features cannot reliably rule out thyroid cancer, US guidance allows a correct and safe sampling also of small or deeply located thyroid lesions. Obtained in this way, cytological or microhistological specimens may reliably define the nature of most thyroid nodules, and the information from histochemical or molecular markers shows promise in the classification of the remaining indeterminate cases. While a prompt surgical treatment can be offered in the minority of suspicious or definitely malignant cases, most individuals warrant only a follow-up. However, at initial evaluation, or over the years, a fraction of these benign lesions may grow and/or become symptomatic. Such cases may benefit from US-guided minimally invasive procedures as an alternative to surgery. Image-guided percutaneous treatments most often achieve relief of neck complaints, are inexpensive, and can be performed on an outpatient basis. The risk of major complications, after adequate training, is very low. Importantly, thyroid function is preserved. Currently, percutaneous ethanol injection for cystic lesions and thermal ablation, with laser or radiofrequency, for solid nodules are increasingly used and disseminated beyond the initial core facilities. In centres with expertise and high patient volume, their use should be considered as first-line treatment alternatives to surgery for selected patients with benign enlarging or symptomatic thyroid lesions.
Introduction Reactive lymphoid hyperplasia is a benign nodular lesion characterized by marked proliferation of non-neoplastic, polyclonal lymphocytes forming follicles. The lesion is found in various organs such as skin, orbit, lung, gastrointestinal tract, and liver. However, reactive lymphoid hyperplasia in the thyroid gland is extremely rare. Here, we present an interesting case of reactive lymphoid hyperplasia in the thyroid, which suggests the nature of the disease. Case presentation A 74-year-old Japanese man was referred to our institute because of a growing well-demarcated irregular-shaped mass in the right lobe of the thyroid. Malignant lymphoma was suspected by cytology, and right lobectomy was conducted. A final diagnosis of reactive lymphoid hyperplasia was made by the intimate investigation of the surgical specimen, with evidence of polyclonal and non-neoplastic lymphatic proliferations forming follicles with an active germinal center. After an initial uneventful postoperative course, our patient developed severe symptoms of systemic rheumatic arthritis, and alterations in autoimmune reaction, including clinically overt chronic thyroiditis, were identified. Conclusions Our case demonstrated important clinical information on reactive lymphoid hyperplasia of the thyroid, and suggested the importance of differential diagnosis, and possible close correlation between systemic autoimmune disorder and the disease. PMID:25005726
Tian, Yuan; Nie, Xiu; Xu, Shan; Li, Yan; Huang, Tao; Tang, Huiru; Wang, Yulan
Thyroid nodules can be classified into benign and malignant tumors. However, distinguishing between these two types of tumors can be challenging in clinics. Since malignant nodules require surgical intervention whereas asymptomatic benign tumors do not, there is an urgent need for new techniques that enable accurate diagnosis of malignant thyroid nodules. Here, we used (1)H NMR spectroscopy coupled with pattern recognition techniques to analyze the metabonomes of thyroid tissues and their extracts from thyroid lesion patients (n = 53) and their adjacent healthy thyroid tissues (n = 46). We also measured fatty acid compositions using GC-FID/MS techniques as complementary information. We demonstrate that thyroid lesion tissues can be clearly distinguishable from healthy tissues, and malignant tumors can also be distinguished from the benign tumors based on the metabolic profiles, both with high sensitivity and specificity. In addition, we show that thyroid lesions are accompanied with disturbances of multiple metabolic pathways, including alterations in energy metabolism (glycolysis, lipid and TCA cycle), promotions in protein turnover, nucleotide biosynthesis as well as phosphatidylcholine biosynthesis. These findings provide essential information on the metabolic features of thyroid lesions and demonstrate that metabonomics technology can be potentially useful in the rapid and accurate preoperative diagnosis of malignant thyroid nodules.
Tian, Yuan; Nie, Xiu; Xu, Shan; Li, Yan; Huang, Tao; Tang, Huiru; Wang, Yulan
Thyroid nodules can be classified into benign and malignant tumors. However, distinguishing between these two types of tumors can be challenging in clinics. Since malignant nodules require surgical intervention whereas asymptomatic benign tumors do not, there is an urgent need for new techniques that enable accurate diagnosis of malignant thyroid nodules. Here, we used 1H NMR spectroscopy coupled with pattern recognition techniques to analyze the metabonomes of thyroid tissues and their extracts from thyroid lesion patients (n = 53) and their adjacent healthy thyroid tissues (n = 46). We also measured fatty acid compositions using GC−FID/MS techniques as complementary information. We demonstrate that thyroid lesion tissues can be clearly distinguishable from healthy tissues, and malignant tumors can also be distinguished from the benign tumors based on the metabolic profiles, both with high sensitivity and specificity. In addition, we show that thyroid lesions are accompanied with disturbances of multiple metabolic pathways, including alterations in energy metabolism (glycolysis, lipid and TCA cycle), promotions in protein turnover, nucleotide biosynthesis as well as phosphatidylcholine biosynthesis. These findings provide essential information on the metabolic features of thyroid lesions and demonstrate that metabonomics technology can be potentially useful in the rapid and accurate preoperative diagnosis of malignant thyroid nodules. PMID:26486570
... Treatment? Thyroid Cancer About Thyroid Cancer What Is Thyroid Cancer? Cancer starts when cells in the body begin ... cell) Medullary Anaplastic (an aggressive undifferentiated tumor) Differentiated thyroid cancers Most thyroid cancers are differentiated cancers. The cells ...
... Emergency Room? What Happens in the Operating Room? Thyroid Disorders KidsHealth > For Kids > Thyroid Disorders A A ... the world is a thyroid? What Is the Thyroid? The thyroid (say: THYE-royd) is a gland, ...
Garingarao, Carlo Jan; Añonuevo-Cruz, Cecille; Gasacao, Ryan
Benign goitres have the potential to reach massive sizes if neglected, but most have a protracted course that may or may not present with compressive symptoms. We report the case of a 57-year-old man who presented with a rapidly enlarging nodular goitre resulting in acute respiratory failure. Endotracheal intubation and emergency total thyroidectomy were performed, revealing massive thyroid nodules with minimal intrathoracic extension and tracheal erosion. Despite a course and clinical findings suggestive of malignant disease, histopathology was consistent with a benign multinodular goitre. Several cases of benign goitres necessitating endotracheal intubation have been reported. Airway compromise was attributed to a significant intrathoracic component, or inciting events such as thyroid haemorrhage, pregnancy, radioiodine uptake or major surgery. Obstructive symptoms may not correlate well with objective measures of upper airway obstruction such as radiographs or flow volume loops.
Xie, Cheng; Cox, Peter; Taylor, Nia; LaPorte, Sarah
Thyroid nodules are a common occurrence in the general population, and these incidental thyroid nodules are often referred for ultrasound (US) evaluation. US provides a safe and fast method of examination. It is sensitive for the detection of thyroid nodules, and suspicious features can be used to guide further investigation/management decisions. However, given the financial burden on the health service and unnecessary anxiety for patients, it is unrealistic to biopsy every thyroid nodule to confirm diagnosis. The British Thyroid Association (BTA) has recently produced a US classification (U1-U5) of thyroid nodules to facilitate the decision-making process regarding the need to perform fine-needle aspiration cytology (FNAC) for suspicious cases. In this pictorial review, we provide a complete series of sonographic images to illustrate benign and malignant features of thyroid nodules according to the U1-5 classification. Specifically, we highlight morphologic characteristic of the nodule, including its echo signal in relation to its consistency, nodular size, number and contour. Additional diagnostic features such as halo, colloid, calcification and vascular patterns are also discussed in detail. The aim is to assist radiologists and clinicians in recognising sonographic patterns of benign, suspicious and malignant nodules based on U1-5 criteria, and in planning for further investigations. • Ultrasound is sensitive in identifying suspicious features, which require aspiration. • Whether nodules require aspiration should be based on sonographic features and clinical findings. • U1-5 classification of sonographic findings can help determine whether aspiration is necessary.
Belliveau, J-G; Bauman, G S; Tay, K Y; Ho, D; Menon, R S
External beam radiation therapy is a common treatment for many brain neoplasms. While external beam radiation therapy adheres to dose limits to protect the uninvolved brain, areas of high dose to normal tissue still occur. Patients treated with chemoradiotherapy can have adverse effects such as microbleeds and radiation necrosis, but few studies exist of patients treated without chemotherapy. Ten patients were treated for low-grade or benign neoplasms with external beam radiation therapy only and scanned within 12-36 months following treatment with a 7T MR imaging scanner. A multiecho gradient-echo sequence was acquired and postprocessed into SWI, quantitative susceptibility mapping, and apparent transverse relaxation maps. Six patients returned for follow-up imaging approximately 18 months following their first research scan and were imaged with the same techniques. At the first visit, 7/10 patients had microbleeds evident on SWI, quantitative susceptibility mapping, and apparent transverse relaxation. All microbleeds were within a dose region of >45 Gy. Additionally, 4/10 patients had asymptomatic WM signal changes evident on standard imaging. Further analysis with our technique revealed that these lesions were venocentric, suggestive of a neuroinflammatory process. There exists a potential for microbleeds in patients treated with external beam radiation therapy without chemotherapy. This finding is of clinical relevance because it could be a precursor of future neurovascular disease and indicates that additional care should be taken when using therapies such as anticoagulants. Additionally, the appearance of venocentric WM lesions could be suggestive of a neuroinflammatory mechanism that has been suggested in diseases such as MS. Both findings merit further investigation in a larger population set. © 2017 by American Journal of Neuroradiology.
Li, Bo; Zhang, Yaqiong; Yin, Ping; Zhou, Jian; Jiang, Tian'an
The present study aimed to investigate the value of ultrasonography in the diagnosis of papillary thyroid microcarcinoma (PTMC) coexisting with a thyroid abnormality, and to improve the accuracy of PTMC diagnosis. The ultrasonic features of 38 PTMC nodules coexisting with a thyroid abnormality and 56 thyroid benign nodules, obtained by surgical resection and confirmed by pathological analysis, were retrospectively analyzed. All masses were ≤ 1.0 cm in diameter. Ultrasonic features that were analyzed included the shape, aspect ratio, boundary, margin, echo, uniformity, presence or absence of microcalcification and enlargement of the lymph nodes, as well as the blood flow of the nodules. Furthermore, the sensitivity, specificity and accuracy of ultrasonography for the diagnosis of PTMC were obtained. The following ultrasonic features of thyroid nodules were significantly (P<0.05) associated with PTMC coexisting with a thyroid abnormality: An irregular shape; an aspect ratio of ≥ 1; an unclear boundary; blurred margins; internal heterogeneous hypoechogenicity; and microcalcification. Therefore, thyroid nodules with these ultrasonic characteristics coexisting with a thyroid abnormality may be suspected as malignant PTMC. The present study demonstrated that ultrasound-guided biopsies are necessary to prevent misdiagnosis of PTMC. The sensitivities of enlarged neck lymph nodes and abundant blood flow are so low that they may be considered as references for the differentiation of PTMC from benign nodules. PMID:27698812
Wang, Liang; Xia, Yu; Jiang, Yu-Xin; Dai, Qing; Li, Xiao-Yi
To assess the efficacy of sonography for discriminating nodular Hashimoto thyroiditis from papillary thyroid carcinoma in patients with sonographically evident diffuse Hashimoto thyroiditis. This study included 20 patients with 24 surgically confirmed Hashimoto thyroiditis nodules and 40 patients with 40 papillary thyroid carcinoma nodules; all had sonographically evident diffuse Hashimoto thyroiditis. A retrospective review of the sonograms was performed, and significant benign and malignant sonographic features were selected by univariate and multivariate analyses. The combined likelihood ratio was calculated as the product of each feature's likelihood ratio for papillary thyroid carcinoma. We compared the abilities of the original sonographic features and combined likelihood ratios in diagnosing nodular Hashimoto thyroiditis and papillary thyroid carcinoma by their sensitivity, specificity, and Youden index. The diagnostic capabilities of the sonographic features varied greatly, with Youden indices ranging from 0.175 to 0.700. Compared with single features, combinations of features were unable to improve the Youden indices effectively because the sensitivity and specificity usually changed in opposite directions. For combined likelihood ratios, however, the sensitivity improved greatly without an obvious reduction in specificity, which resulted in the maximum Youden index (0.825). With a combined likelihood ratio greater than 7.00 as the diagnostic criterion for papillary thyroid carcinoma, sensitivity reached 82.5%, whereas specificity remained at 100.0%. With a combined likelihood ratio less than 1.00 for nodular Hashimoto thyroiditis, sensitivity and specificity were 90.0% and 92.5%, respectively. Several sonographic features of nodular Hashimoto thyroiditis and papillary thyroid carcinoma in a background of diffuse Hashimoto thyroiditis were significantly different. The combined likelihood ratio may be superior to original sonographic features for
Mekel, Michal; Nucera, Carmelo; Hodin, Richard A.; Parangi, Sareh
BACKGROUND Management of patients with thyroid nodules is based on establishing an accurate diagnosis; however, differentiating benign from malignant lesions preoperatively is not always possible using current cytological techniques. Novel molecular testing on cytological material could lead to clearer treatment algorithms. B-RafV600E mutation is the most common genetic alteration in thyroid cancer, specifically found in papillary thyroid cancer (PTC), and usually reported to be associated with aggressive disease. DATA SOURCE A literature search using PubMed identified all the pertinent literature on the identification and utilization of the B-RafV600E mutation in thyroid cancer. CONCLUSIONS The utility of using B-Raf mutation testing for nodules with indeterminate cytology is limited since many of those nodules (benign and malignant) do not harbor B-Raf mutations. However, when the pathologist sees cytological features suspicious for PTC, B-RafV600E mutation analysis may enhance the assessment of preoperative risks for PTC, directing a more aggressive initial surgical management when appropriate. PMID:20637346
Ionizing radiation has been demonstrated to result in a number of changes in the human thyroid gland. At lower radiation dose levels (between 10 and 1500 rads), benign and malignant neoplasms appear to be the dominant effect, whereas at higher dose levels functional changes and thyroiditis become more prevalent. In all instances, the likelihood of the effect is related to the amount and type of radiation exposure, time since exposure, and host factors such as age, sex, and heredity. The author's current approach to the evaluation of patients with past external radiation therapy to the thyroid is discussed. The use of prophylactic thyroxine (T4) therapy is controversial. While T4 therapy may not be useful in preventing carcinogenesis when instituted many years after radiation exposure, theoretically T4 may block TSH secretion and stimulation of damaged cells to undergo malignant transformation when instituted soon after radiation exposure.
Shrum, J M; Byers, B; Parhar, K
Summary A 19-year-old woman with asphyxiation complicated by cardiac arrest, following an unsuccessful suicide attempt by hanging, developed an uncommon complication of trauma-induced thyroid storm. She was initially admitted to the intensive care unit intubated and mechanically ventilated for postcardiac arrest management. Investigation of thyroid storm was pursued after the patient was noted to be persistently hypertensive, tachycardic and agitated despite high levels of sedation. Thyroid function tests confirmed the clinical suspicion of progressive thyrotoxicosis, with associated imaging consistent with thyroid inflammation secondary to band-like traumatic pressure to the lower half of the thyroid gland. Treatment with β-blockers and a thionamide resulted in the eventual resolution of her thyroid storm state and normalisation of her thyroid function. We conclude that traumatically induced thyroid storm should be considered in all hypermetabolic patients following blunt neck injuries including hanging, and that traditional treatment of hyperthyroidism can be successfully applied. PMID:25008337
Shrum, J M; Byers, B; Parhar, K
Summary A 19-year-old woman with asphyxiation complicated by cardiac arrest, following an unsuccessful suicide attempt by hanging, developed an uncommon complication of trauma-induced thyroid storm. She was initially admitted to the intensive care unit intubated and mechanically ventilated for postcardiac arrest management. Investigation of thyroid storm was pursued after the patient was noted to be persistently hypertensive, tachycardic and agitated despite high levels of sedation. Thyroid function tests confirmed the clinical suspicion of progressive thyrotoxicosis, with associated imaging consistent with thyroid inflammation secondary to band-like traumatic pressure to the lower half of the thyroid gland. Treatment with β-blockers and a thionamide resulted in the eventual resolution of her thyroid storm state and normalisation of her thyroid function. We conclude that traumatically induced thyroid storm should be considered in all hypermetabolic patients following blunt neck injuries including hanging, and that traditional treatment of hyperthyroidism can be successfully applied. 2014 BMJ Publishing Group Ltd.
Kutlutürk, Koray; Otan, Emrah; Yağcı, Mehmet Ali; Usta, Sertaç; Aydın, Cemalettin; Ünal, Bülent
Objective: Thyroid pathologies and non-medullary thyroid cancer often accompany primary hyperparathyroidism (PHPT). The purpose of this study was to examine the association between thyroid diseases, especially micropapillary thyroid cancer, with PHPT. Material and Methods: Data regarding 46 patients who were operated on with a diagnosis of PHPT at Inonu University Faculty of Medicine, General Surgery Clinic between June 2009 and March 2013 were retrospectively analyzed. Age, gender, levels of preoperative calcium, parathyroid hormone and phosphorus, and the histopathological results of the removed parathyroid and thyroid tissues were evaluated. All of the patients had a preoperative diagnosis of PHPT and there was no history of radiation to the head and neck region in any of the patients. Results: Out of the 46 patients who were operated on for PHPT, 39 were female and 7 were male. The mean age was 52.8 years (25–76). Simultaneous thyroidectomy was performed in 35 patients (76.1%) due to an accompanying thyroid disorder. Papillary microcarcinoma was detected in 5 of these 35 (10.9%) patients who underwent thyroidectomy, two of which (40%) were multifocal tumors. The benign thyroid pathologies detected in the remaining 30 (65.2%) cases included lymphocytic thyroiditis in 3, Hashimoto thyroiditis in 1, follicular adenoma in 3 (two of which was Hurtle cell), and nodular colloidal goiter in 23 patients. The preoperative serum phosphate level was significantly higher in the group with papillary thyroid microcarcinoma (p=0.013). Conclusion: In regions where goiter is endemic, thyroid diseases and thyroid papillary microcarcinoma occur in association with PHPT at a higher rate compared to the normal population. Therefore, we believe that patients who are planned for surgery due to PHPT should be thoroughly investigated for the presence of any concomitant malignant thyroid pathologies in the preoperative period. It should also be kept in mind that patients with high
Pirali, Barbara; Negri, Sara; Chytiris, Spyridon; Perissi, Andrea; Villani, Laura; La Manna, Luigi; Cottica, Danilo; Ferrari, Massimo; Imbriani, Marcello; Rotondi, Mario; Chiovato, Luca
Perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) are ubiquitous compounds that may act as endocrine disruptors, neurotoxic agents, and fetal development perturbing substances and may also be carcinogenic, as recently demonstrated in experimental animal models. There is little information on the potential for these compounds to affect the thyroid. Therefore, this study was performed to measure the intrathyroidal levels of PFOA and PFOS in surgical specimens of thyroid glands and to determine if there was a relationship between the concentrations of these substances and the clinical, biochemical, and histologic phenotype of the patients from whom the thyroids were obtained. We also sought to determine if there was a relationship between tissue and serum levels of both PFOA and PFOS. PFOA and PFOS were measured in 28 patients undergoing thyroid surgery for benign (15 multinodular goiters and 7 Graves' disease) and malignant (5 papillary and 1 follicular carcinoma) thyroid disorders. PFOA and PFOS were detectable in all surgical specimens of thyroid tissue. Their median concentrations were 2.0 ng/g (range = 0.4-4.6 ng/g) and 5.3 ng/g (range = 2.1-44.7), respectively. Intrathyroidal concentrations of PFOA and PFOS were similar in the thyroids of patients with thyroid diseases as in thyroid glands obtained at autopsy. There was no relationship between the intrathyroidal concentrations of either PFOA or PFOS and the underlying thyroid disease. A significant correlation between the serum and the tissue levels of PFOS was found in all patients. The serum concentrations of PFOA and PFOS were significantly higher than those in the correspondent surgical specimens. These observations do not support the view that PFOA and PFOS are actively concentrated in the thyroid. PFOA and PFOS, however, are both found in surgical and autopsy thyroid specimens. Therefore, further studies to determine if they have disrupting effects in thyroid cells or tissue, and studies
Xing, M; Vasko, V; Tallini, G; Larin, A; Wu, Gujun; Udelsman, R; Ringel, M D; Ladenson, P W; Sidransky, D
A high prevalence of activating mutation of the B type Raf kinase (BRAF) gene was recently reported in papillary thyroid cancer (PTC). However, the frequency of this mutation in several other types of thyroid neoplasms was not thoroughly investigated. In the present study, in addition to PTC, we evaluated various thyroid tumor types for the most common BRAF T1796A mutation by direct genomic DNA sequencing. We found a high and similar frequency (45%) of the BRAF T1796A mutation in two geographically distinct PTC patient populations: one composed of sporadic cases from North America, and the other from Kiev, Ukraine, that included individuals who were exposed to the Chernobyl nuclear accident. In contrast, we found BRAF mutation in only 20% of anaplastic thyroid cancers and no mutation in medullary thyroid cancers and benign thyroid hyperplasia. We also confirmed previous reports that the BRAF T1796A mutation did not occur in benign thyroid adenomas and follicular thyroid cancers. Specific analysis of the Ukraine patients with confirmed history of radiation exposure failed to show a higher incidence of BRAF mutation. Our results suggest that frequent occurrence of BRAF mutation is inherently associated with PTC, irrespective of geographic origin, and is apparently not a radiation-susceptible mutation. The lack or low prevalence of BRAF mutation in other thyroid neoplasms is consistent with the notion that other previously defined genetic alterations on the same signaling pathway are sufficient to cause tumorigenesis in most thyroid neoplasms.
Jee, Youn Hee; Sadowski, Samira M; Celi, Francesco S; Xi, Liqiang; Raffeld, Mark; Sacks, David B; Remaley, Alan T; Wellstein, Anton; Kebebew, Electron; Baron, Jeffrey
Thyroid nodules are common, and approximately 5% of these nodules are malignant. Pleiotrophin (PTN) is a heparin-binding growth factor which is overexpressed in many cancers. The expression of PTN in papillary thyroid cancer (PTC) is unknown. 74 subjects (age 47 ± 12 y, 15 males) who had thyroidectomy with a histological diagnosis: 79 benign nodules and 23 PTCs (10 classic, 6 tall cell, 6 follicular variant and 1 undetermined). Fine-needle aspiration (FNA) samples were obtained ex vivo from surgically excised tissue and assayed for PTN and thyroglobulin (Tg). Immunohistochemistry (IHC) was performed on tissue sections. In FNA samples, PTN concentration normalized to Tg was significantly higher in PTC than in benign nodules (16 ± 6 vs 0.3 ± 0.1 ng/mg, p < 0.001). In follicular variant of PTC (n = 6), the PTN/Tg ratio was also higher than in benign nodules (1.3 ± 0.6 vs 0.3 ± 0.1 ng/mg, P < 0.001, respectively). IHC showed cytoplasmic localization of PTN in PTC cells. In ex vivo FNA samples, the PTN to thyroglobulin ratio was higher in PTCs, including follicular variant PTC, than in benign thyroid nodules. The findings raise the possibility that measurement of the PTN to Tg ratio may provide useful diagnostic and/or prognostic information in the evaluation of thyroid nodules.
Jee, Youn Hee; Sadowski, Samira M.; Celi, Francesco S.; Xi, Liqiang; Raffeld, Mark; Sacks, David B.; Remaley, Alan T.; Wellstein, Anton; Kebebew, Electron; Baron, Jeffrey
Background Thyroid nodules are common, and approximately 5% of these nodules are malignant. Pleiotrophin (PTN) is a heparin-binding growth factor which is overexpressed in many cancers. The expression of PTN in papillary thyroid cancer (PTC) is unknown. Method and Findings 74 subjects (age 47 ± 12 y, 15 males) who had thyroidectomy with a histological diagnosis: 79 benign nodules and 23 PTCs (10 classic, 6 tall cell, 6 follicular variant and 1 undetermined). Fine-needle aspiration (FNA) samples were obtained ex vivo from surgically excised tissue and assayed for PTN and thyroglobulin (Tg). Immunohistochemistry (IHC) was performed on tissue sections. In FNA samples, PTN concentration normalized to Tg was significantly higher in PTC than in benign nodules (16 ± 6 vs 0.3 ± 0.1 ng/mg, p < 0.001). In follicular variant of PTC (n = 6), the PTN/Tg ratio was also higher than in benign nodules (1.3 ± 0.6 vs 0.3 ± 0.1 ng/mg, P < 0.001, respectively). IHC showed cytoplasmic localization of PTN in PTC cells. Conclusion In ex vivo FNA samples, the PTN to thyroglobulin ratio was higher in PTCs, including follicular variant PTC, than in benign thyroid nodules. The findings raise the possibility that measurement of the PTN to Tg ratio may provide useful diagnostic and/or prognostic information in the evaluation of thyroid nodules. PMID:26914549
Cho, Yoon Young; Jang, Hye Won; Jang, Ju Young; Kim, Tae Hyuk; Choe, Jun-Ho; Kim, Jung-Han; Kim, Jee Soo; Kim, Sun Wook; Chung, Jae Hoon
Persistent hypercalcitoninemia is reported in 40% to 60% of patients with medullary thyroid cancer (MTC) after initial therapy, but their clinical outcomes have not been clearly studied. We evaluated the outcomes of MTC with hypercalcitoninemia and assessed the cutoffs of postoperative serum calcitonin for predicting structural recurrence. A dynamic risk assessment system was used to categorize clinical outcomes in this retrospective study. Receiver operating characteristic (ROC) curve analysis was used to calculate the calcitonin cutoffs for predicting structural recurrence. Among 120 patients operated on, 30 (25%) had persistent hypercalcitoninemia. Of that group, 18 (60%) had biochemical persistent disease and 11 (37%) developed structural identified disease, including 1 death (3%). Postoperative calcitonin <29 pg/mL predicted structural disease with 100% sensitivity, 90.5% specificity, and 100% negative predictive value. One third of the patients with MTC with hypercalcitoninemia experienced structural recurrence, and postoperative basal serum calcitonin might be a simple tumor marker to predict structural recurrence. © 2016 Wiley Periodicals, Inc. Head Neck 38: First-1508, 2016. © 2016 Wiley Periodicals, Inc.
Tanaka, Ryota; Fujisawa, Yasuhiro; Maruyama, Hiroshi; Nakamura, Yasuhiro; Yoshino, Koji; Ohtsuka, Mikio; Fujimoto, Manabu
Nivolumab (ONO-4538) is an anti-programmed death-1 specific monoclonal antibody, which has become a standard treatment for metastatic malignant melanoma. Nivolumab induces autoimmune adverse events, defined as immune-related adverse events. Herein, we report a case of nivolumab-induced thyroid dysfunction in the clinical setting. Fourteen patients were treated with nivolumab at our institute, of which three developed thyroid dysfunction, an incidence higher than previously reported in the initial clinical trials. Interestingly, one patient achieved complete remission; suggesting that in some patients, the occurrence of immune-related adverse events, including thyroid dysfunction, might reflect the drug's antitumour efficacy. No patient died or discontinued nivolumab treatment owing to thyroid dysfunction. Although thyroid dysfunction first appeared to be asymptomatic, two of the three patients developed symptoms related to hypothyroidism soon after, requiring hormone replacement therapy. Another patient developed hyperthyroidism that was initially asymptomatic; the patient subsequently developed myalgia with fever >39.5°C after two additional courses of nivolumab. Treatment with nivolumab was therefore discontinued, and treatment with prednisolone was initiated. Symptoms resolved within a few days, and thyroid function normalized. Thyroid dysfunction is sometimes difficult to diagnose because its symptoms similar to those of many other diseases. In addition, thyroid-related immune-related adverse events may present with unique symptoms such as myalgia with high fever, abruptly worsening patients' quality of life. Consequently, thyroid dysfunction should be considered as a possible immune-related adverse event. Thus, it is important to test for thyroid dysfunction at baseline and before the administration of each nivolumab dose if possible.
Ilera, Verónica; Dourisboure, Ricardo; Colobraro, Antonio; Silva Croome, María Del Carmen; Olstein, Gustavo; Gauna, Alicia
This prospective study analyzed the frequency of V600E mutation of oncogene BRAF in patients operated for benign thyroid nodules and for papillary thyroid cancer in an Argentine population. In patients with papillary thyroid cancer we compared clinicopathological characteristics between those harboring BRAF mutation and those without it. Twenty five consecutive patients operated for benign nodules and for papillary carcinoma were prospectively included. Fresh tissue samples of thyroid nodules and of adjacent thyroid parenchyma were obtained. DNA was extracted and amplified by amplification refractory mutation system polymerase chain reaction (ARMS PCR). Direct sequencing was performed in four samples. Of those patients operated for papillary thyroid cancer, 77% harbored BRAF mutation. All samples from adjacent thyroid parenchyma and from patients operated for benign nodules tested negative for the mutation. Direct sequencing confirmed the results obtained by ARMS PCR. Patients with BRAF mutation were significantly older at the time of diagnosis (BRAF+ 47.7 ± 12.7 years vs. BRAF- 24.7 ± 8.1 years, p < 0.01). Nine out of ten papillary carcinomas with BRAF mutation corresponded to the classic histological subtype, which was not observed in BRAF negative tumors (p < 0.02). In conclusion, we found a high frequency of BRAF V600E mutation in this population of patients operated for papillary thyroid carcinoma in Argentina. These results are consistent with those reported in the literature.
... by your thyroid gland. The extra thyroxine can cause symptoms of hyperthyroidism such as: Unexplained weight loss Increased perspiration Tremor ... noncancerous and isn't considered serious unless it causes bothersome symptoms from its size. Some ... Thyroid cyst. Fluid-filled cavities (cysts) in the ...
Zhou, Chao; Wang, Yihong; Aguirre, Aaron D.; Tsai, Tsung-Han; Cohen, David W.; Connolly, James L.; Fujimoto, James G.
We evaluate the feasibility of optical coherence tomography (OCT) and optical coherence microscopy (OCM) for imaging of benign and malignant thyroid lesions ex vivo using intrinsic optical contrast. Thirty four thyroid gland specimens were imaged from 17 patients, covering a spectrum of pathology, ranging from normal thyroid to neoplasia and benign disease. The integrated OCT and OCM imaging system allows seamlessly switching between low and high magnifications, in a way similar to traditional microscopy. Good correspondence was observed between optical images and histological sections. The results provide a basis for interpretation of future OCT and OCM images of the thyroid tissues and suggest the possibility of future in vivo evaluation of thyroid pathology.
Jung, Su Kyoung; Kim, Kirang; Tae, Kyung; Kong, Gu; Kim, Mi Kyung
Thyroid cancer is the most common cancer among Korean women. However, there are few data on dietary factors related to thyroid cancer risk. The objective of the present study was to evaluate the association between raw vegetables and fruits intake and thyroid cancer in a case-control study. We included 111 histologically confirmed malignant thyroid cancer cases and 115 benign cases. Controls who did not have nodules in thyroid ultrasonography were matched to cases by age (± 2 years). Food and nutrient intakes were estimated using a quantitative FFQ with 121 items. Conditional logistic regression analysis was used to obtain OR and corresponding 95 % CI. The intake of total vegetables was not associated with malignant thyroid cancer, but inversely associated with benign cases. High raw vegetable intake was inversely associated with thyroid cancer risk both in malignant and benign cases (P for trend = 0·01 in both malignant and benign cases). Among fruits, persimmon intake had an inverse association with thyroid cancer risk in both malignant and benign cases (P for trend = 0·06 in malignant cases; P for trend = 0·01 in benign cases) and tangerine intake had an inverse association in malignant cases (P for trend = 0·03). The frequency of consumption of raw vegetables and persimmon also had a consistent inverse association in both malignant and benign cases. These results suggest that high consumption of raw vegetables, persimmons and tangerines may decrease thyroid cancer risk and help prevent early-stage thyroid cancer.
Ojomo, Kristin A; Schneider, David F; Reiher, Alexandra E; Lai, Ngan; Schaefer, Sarah; Chen, Herbert; Sippel, Rebecca S
Current postoperative thyroid replacement dosing is weight based, with adjustments made after thyroid-stimulating hormone values. This method can lead to considerable delays in achieving euthyroidism and often fails to accurately dose over- and underweight patients. Our aim was to develop an accurate dosing method that uses patient body mass index (BMI) data. A retrospective review of a prospectively collected thyroid database was performed. We selected adult patients undergoing thyroidectomy, with benign pathology, who achieved euthyroidism on thyroid hormone supplementation. Body mass index and euthyroid dose were plotted and regression was used to fit curves to the data. Statistical analysis was performed using STATA 10.1 software (Stata Corp). One hundred twenty-two patients met inclusion criteria. At initial follow-up, only 39 patients were euthyroid (32%). Fifty-three percent of patients with BMI >30 kg/m(2) were overdosed, and 46% of patients with BMI <25 kg/m(2) were underdosed. The line of best fit demonstrated an overall quadratic relationship between BMI and euthyroid dose. A linear relationship best described the data up to a BMI of 50. Beyond that, the line approached 1.1 μg/kg. A regression equation was derived for calculating initial levothyroxine dose (μg/kg/d = -0.018 × BMI + 2.13 [F statistic = 52.7, root mean square error of 0.24]). The current standard of weight-based thyroid replacement fails to appropriately dose underweight and overweight patients. Body mass index can be used to more accurately dose thyroid hormone using a simple formula. Copyright © 2013 American College of Surgeons. Published by Elsevier Inc. All rights reserved.
Maia, Ana Luiza; Ward, Laura S; Carvalho, Gisah A; Graf, Hans; Maciel, Rui M B; Maciel, Léa M Zanini; Rosário, Pedro W; Vaisman, Mario
Thyroid nodules are a common manifestation of thyroid diseases. It is estimated that approximately 10% of adults have palpable thyroid nodules with the frequency increasing throughout life. The major concern on nodule evaluation is the risk of malignancy (5-10%). Differentiated thyroid carcinoma accounts for 90% of all thyroid malignant neoplasias. Although most patients with cancer have a favorable outcome, some individuals present an aggressive form of the disease and poor prognostic despite recent advances in diagnosis and treatment. Here, a set of clinical guidelines for the evaluation and management of patients with thyroid nodules or differentiated thyroid cancer was developed through consensus by 8 member of the Department of Thyroid, Sociedade Brasileira de Endocrinologia e Metabologia. The participants are from different reference medical centers within Brazil, to reflect different practice patterns. Each committee participant was initially assigned to write a section of the document and to submit it to the chairperson, who revised and assembled the sections into a complete draft document, which was then circulated among all committee members for further revision. All committee members further revised and refined the document. The guidelines were developed based on the expert opinion of the committee participants, as well as on previously published information.
Hitzeman, Nathan; Cotton, Erin
Incidentalomas are increasingly common findings on radiologic studies, causing worry for physicians and patients. Physicians should consider the risk of discovering incidentalomas when contemplating imaging. Patients may assume that incidentalomas are cancer, and may not be aware of the radiation risks associated with repeat imaging. Once incidentalomas are detected, appropriate management is dependent on an informed patient's wishes and the clinical situation. Guidelines are provided for the initial management of eight incidentalomas (pituitary, thyroid, pulmonary, hepatic, pancreatic, adrenal, renal, and ovarian). Patients presenting with pituitary incidentalomas should undergo pituitary-specific magnetic resonance imaging if the lesion is 1 cm or larger, or if it abuts the optic chiasm. Thyroid incidentalomas are ubiquitous, but nodules larger than 1 to 2 cm are of greater concern. Worrisome pulmonary incidentalomas are those larger than 8 mm or those with irregular borders, eccentric calcifications, or low density. However, current guidelines recommend that even pulmonary incidentalomas as small as 4 mm be followed. Solid hepatic incidentalomas 5 mm or larger should be monitored closely, and multiphasic scanning is helpful. Pancreatic cystic neoplasms have malignant potential, and surgery is recommended for pancreatic cysts larger than 3 cm with suspicious features. Adrenal lesions larger than 4 cm are usually biopsied. The Bosniak classification is a well-accepted means of triaging renal incidentalomas. Lesions at category IIF or greater require serial monitoring or surgery. Benign or probably benign ovarian cysts 3 cm or smaller in premenopausal women or 1 cm or smaller in postmenopausal women do not require follow-up. Ovarian cysts with thickened walls or septa, or solid components with blood flow, should be managed closely.
Olifirova, O S; Knalian, S V
An investigation of galectin-3 and thyroglobulin using IFA was conducted in 80 patients. A lavage of aspirate from the thyroid gland was obtained by fine-needle aspiration biopsy. It was stated that significant increase of galectin-3 and thyroglobulin was noted in case of high differentiated thyroid carcinoma in comparison with benign nodules. Galectin-3 and thyroglobulin from the lavage of thyroid gland aspirate could be used as an oncological marker for complex differentiated diagnostics of high differentiated thyroid carcinoma and benign nodules.
Derwahl, Michael; Nicula, Diana
Proliferative thyroid diseases are more prevalent in females than in males. Upon the onset of puberty, the incidence of thyroid cancer increases in females only and declines again after menopause. Estrogen is a potent growth factor both for benign and malignant thyroid cells that may explain the sex difference in the prevalence of thyroid nodules and thyroid cancer. It exerts its growth-promoting effect through a classical genomic and a non-genomic pathway, mediated via a membrane-bound estrogen receptor. This receptor is linked to the tyrosine kinase signaling pathways MAPK and PI3K. In papillary thyroid carcinomas, these pathways may be activated either by a chromosomal rearrangement of the tyrosine receptor kinase TRKA, by RET/PTC genes, or by a BRAF mutation and, in addition, in females they may be stimulated by high levels of estrogen. Furthermore, estrogen is involved in the regulation of angiogenesis and metastasis that are critical for the outcome of thyroid cancer. In contrast to other carcinomas, however, detailed knowledge on this regulation is still missing for thyroid cancer. © 2014 Society for Endocrinology.
Caturegli, P; De Remigis, A; Rose, N R
Hashimoto thyroiditis (HT), now considered the most common autoimmune disease, was described over a century ago as a pronounced lymphoid goiter affecting predominantly women. In addition to this classic form, several other clinico-pathologic entities are now included under the term HT: fibrous variant, IgG4-related variant, juvenile form, Hashitoxicosis, and painless thyroiditis (sporadic or post-partum). All forms are characterized pathologically by the infiltration of hematopoietic mononuclear cells, mainly lymphocytes, in the interstitium among the thyroid follicles, although specific features can be recognized in each variant. Thyroid cells undergo atrophy or transform into a bolder type of follicular cell rich in mitochondria called Hürthle cell. Most HT forms ultimately evolve into hypothyroidism, although at presentation patients can be euthyroid or even hyperthyroid. The diagnosis of HT relies on the demonstration of circulating antibodies to thyroid antigens (mainly thyroperoxidase and thyroglobulin) and reduced echogenicity on thyroid sonogram in a patient with proper clinical features. The treatment remains symptomatic and based on the administration of synthetic thyroid hormones to correct the hypothyroidism as needed. Surgery is performed when the goiter is large enough to cause significant compression of the surrounding cervical structures, or when some areas of the thyroid gland mimic the features of a nodule whose cytology cannot be ascertained as benign. HT remains a complex and ever expanding disease of unknown pathogenesis that awaits prevention or novel forms of treatment. Copyright © 2014 Elsevier B.V. All rights reserved.
Pianta, Annalisa; Puppin, Cinzia; Franzoni, Alessandra; Fabbro, Dora; Di Loreto, Carla; Bulotta, Stefania; Deganuto, Marta; Paron, Igor; Tell, Gianluca; Puxeddu, Efisio; Filetti, Sebastiano; Russo, Diego; Damante, Giuseppe
Nucleophosmin (NPM) is a protein that contributes to several cell functions. Depending on the context, it can act as an oncogene or tumor suppressor. No data are available on NPM expression in thyroid cells. In this work, we analyzed both NPM mRNA and protein levels in a series of human thyroid tumor tissues and cell lines. By using immunohistochemistry, NPM overexpression was detected in papillary, follicular, undifferentiated thyroid cancer, and also in follicular benign adenomas, indicating it as an early event during thyroid tumorigenesis. In contrast, various levels of NPM mRNA levels as detected by quantitative RT-PCR were observed in tumor tissues, suggesting a dissociation between protein and transcript expression. The same behavior was observed in the normal thyroid FRTL5 cell lines. In these cells, a positive correlation between NPM protein levels, but not mRNA, and proliferation state was detected. By using thyroid tumor cell lines, we demonstrated that such a post-mRNA regulation may depend on NPM binding to p-Akt, whose levels were found to be increased in the tumor cells, in parallel with reduction of PTEN. In conclusion, our present data demonstrate for the first time that nucleophosmin is overexpressed in thyroid tumors, as an early event of thyroid tumorigenesis. It seems as a result of a dysregulation occurring at protein and not transcriptional level related to an increase of p-Akt levels of transformed thyrocytes.
Ho, Wei Li Cindy; Zacharin, Margaret R
Thyroid carcinoma is the most common second malignancy for childhood cancer survivors. Radiation exposure is linked to risk. Thyroid nodules in children have a high risk for malignancy, whether spontaneous or after radiation. Due to the extremely limited available paediatric data, we sought to review a series of patients with thyroid carcinoma, seen over 25 years. Forty-six patients were identified. Thirty-nine (84.8 %) had papillary thyroid carcinoma, five (10.9 %) follicular carcinoma and 2 (4.3 %) medullary thyroid carcinoma (MEN2B). Thirty-three (71.7 %) had childhood radiation exposure (17 females) with thyroid malignancy occurring 6-37 years later. The smallest nodule size found on surveillance to have thyroid malignancy was 4 mm. Thyroid cancer in patients 16 years and under was seen in 22 patients (47.8 %). All had total thyroidectomy, with initial central node clearance from 2005. Diagnostic rTSH stimulated I(123) scan was followed by ablative I(131) if any uptake was seen. Sixteen (32.6 %) had metastases. Twenty-four (52.2 %) had I(131), four requiring multiple courses. Forty-two remain alive and well. Ultrasound screening is required for early diagnosis as small nodule size is not predictive of benign histology or absence of metastases. Central node clearance provides better outcome. Despite metastatic disease at presentation for some, prognosis is favourable. • Incidence of thyroid cancer has been increasing and radiation exposure in childhood cancer survivors is clearly linked to risk. • Published guidelines in many places can only provide very low level evidence due to extremely limited available paediatric data. What is New: • Paper provides good evidence to confirm existing views with the largest cohort of thyroid cancer reported to date in the paediatric age group in Australia, and the largest cohort in Australia where there have been specific high risks of radiation exposure. The only other reported larger studies have come from the Children
Hanna, Jennifer M; Onaitis, Mark W
Robotic master-slave devices can assist surgeons to perform minimally invasive esophageal operations with approaches that have already been demonstrated using laparoscopy and thoracoscopy. Robotic-assisted surgery for benign esophageal disease is described for the treatment of achalasia, epiphrenic diverticula, refractory reflux, paraesophageal hernias, duplication cysts, and benign esophageal masses, such as leiomyomas. Indications and contraindications for robotic surgery in benign esophageal disease should closely approximate the indications for laparoscopic and thoracoscopic procedures. Given the early application of the technology and paucity of clinical evidence, there are currently no procedures for which robotic esophageal surgery is the clinically proven preferred approach. Copyright © 2014 Elsevier Inc. All rights reserved.
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Greenblatt, David Yü; Sippel, Rebecca; Leverson, Glen; Frydman, James; Schaefer, Sarah; Chen, Herbert
Background Patients with thyroid disease frequently complain of dysphagia. To date, there have been no prospective studies evaluating swallowing function before and after thyroid surgery. We used the swallowing quality of life (SWAL-QOL) validated outcomes assessment tool to measure changes in swallowing-related quality-of-life in patients undergoing thyroid surgery. Methods Patients undergoing thyroid surgery from May 2002 to December 2004 completed the SWAL-QOL questionnaire before and one year after surgery. Data were collected on demographic and clinicopathologic variables, and comparisons were made to determine the effect of surgery on patients’ perceptions of swallowing function. Results Of 146 eligible patients, 116 (79%) completed the study. The mean patient age was 49 years, and 81% were female. Sixty-four patients (55%) underwent total thyroidectomy and the remainder received thyroid lobectomy. Thirty patients (26%) had thyroid cancer. The most frequent benign thyroid conditions were multinodular goiter (28%) and Hashimoto’s thyroiditis (27%). Mean pre-operative SWAL-QOL scores were below 90 for nine of the eleven domains, indicating the perception of impaired swallowing and imperfect quality of life. After surgery, significant improvements were seen in eight SWAL-QOL domains. Recurrent laryngeal nerve injury was associated with dramatic score decreases in multiple domains. Conclusions In patients with thyroid disease, uncomplicated thyroidectomy leads to significant improvements in many aspects of patient-reported swallowing-related quality-of-life measured by the SWAL-QOL instrument. PMID:19034567
Tublin, Mitchell E.; Klym, Amy H.; Gur, David
Background Ultrasound and ultrasound-guided fine-needle aspiration biopsy are considered the most effective approaches for both identifying and classifying thyroid nodules. However, despite continuing improvements in scanner technology and refinements in ultrasound/cytological classification guidelines, indeterminate findings still lead to diagnostic lobectomy under general anesthesia. This study aims to investigate the feasibility of applying a modified noninvasive electrical impedance spectroscopy (EIS) approach to classifying thyroid nodules. Method To increase nodule classification sensitivity, we developed a new EIS-based model that introduces an optimized inductance component, which increases the measured signal-to-noise ratio of capacitance variation in and about thyroid nodules. Our model then measures the change of resonance frequency when the positive reactance of the system inductor cancels out the negative reactance of the nodule capacitance in a multi-frequency electrical signal scan. The system is termed “resonance-frequency–based electrical impedance spectroscopy” (REIS). A portable REIS system with multiple probes was assembled and preliminarily tested in our clinical facility. From an ongoing prospective study, an initial data set of 160 REIS examinations including 27 verified cancer cases was used. From the data set, a number of EIS signal features was extracted and analyzed. A multi-feature–based Bayesian Belief Network was built to classify the detected thyroid nodules. A receiver operating characteristic data analysis method was applied to evaluate classification performance. Results The results showed that (i) the median resonance frequency measured by the probe nearest to malignant nodules was in general lower than that measured in benign cases, and (ii) the median descending slope of EIS signal sweep curves computed from cancer cases was larger than that computed from benign cases. The Bayesian Belief Network yielded a classification
Jonas, Corinne; Bertrand, Claude; Michel, Luc; Donckier, Julian E
Typical presentation of subacute thyroiditis (SAT) is an anterior neck pain radiating up to the jaw and ear, often associated with asthenia and fever. Biology shows hyperthyroidism and inflammation. The thyroid uptake is low at scintigraphy. However, the clinical presentation of SAT may be misleading. We report two cases of SAT whose initial manifestation was a painful thyroid nodule suspected of malignancy. In both cases, ultrasound feature was a heterogeneous, hypoechoic, ill-defined area with a low vascularization on colour Doppler. These areas were interpreted by radiologist as nodules. Surgery was then considered. Such a presentation should be known by clinicians to prevent unnecessary surgery.
Vaiman, Michael; Olevson, Youlian; Habler, Liliana; Kessler, Alex; Zehavi, Sergei; Sandbank, Judith
The objective of this study was to evaluate the presence of estrogen receptors (ER) alpha and beta in various thyroid lesions and to assess the practicality of this test. Immunohistochemical stains were performed for both ERalpha and ERbeta, for evaluation of immunoreactivity in 296 thyroid tissue samples that consisted of 150 goiters, 90 papillary carcinomas, 19 follicular adenomas, 15 Hurtle cell adenomas, 6 Hashimoto thyroiditis, 5 anaplastic carcinomas, 4 medullary carcinomas, 4 follicular carcinomas, 2 Hurtle cell carcinomas, and 1 squamous cell carcinoma of the thyroid. Three variables were evaluated in each sample: The intensity of the staining both nuclear (1) and cytoplasmic (2), and the spread of the stain over the sample (3). None of the histologic samples showed immunoreactivity for ERalpha. Positive immunoreactivity results for ERbeta were found in tissue samples from all of the different groups of diagnoses, both benign and malignant lesions as well as in normal thyroid tissue. No significant difference was found between the various thyroid lesions. The study shows that ERbeta is the only ER detectable in thyroid tissue. However, ERbeta expression has no significant specifications for differentiation between benign and malignant lesions of the thyroid. ERalpha is undetectable in the thyroid. Further investigations are necessary mainly in the laboratory immunohistochemical workup.
Lewiński, Andrzej; Wojciechowska, Katarzyna
The process of carcinogenesis is permanently one of the most interesting and significant issues for researchers in different fields of medicine. Therefore, we attempted to bring closer the problem of neoplastic transformation in the thyroid gland. This article covers the latest data about genetic factors, involved in thyroid carcinogenesis. We have presented results of the most recent studies referred to molecular biology of thyroid neoplasms. We have demonstrated not only the genetic background of cancers, derived from the thyroid follicular cell, but also genetic aspects related to medullary thyroid carcinoma and some benign thyroid lesions. The review describes DNA methylation disturbances and the mutations in thyrotropin receptor and G protein genes. Furthermore, we introduce the results of studies performed at our laboratory, concerning mutations in the following protooncogenes: RAS, RET, Trk, MET, and BRAF. Also, we present our data, regarding the loss of heterozygosity (LOH) in the short arm of chromosome 3. Additionally, we discuss overexpression of cyclin D1 gene in benign and malignant thyroid lesions. Previous studies performed at our laboratory indicate the role of IGF-I in the pathogenesis and invasiveness of thyroid cancers. The review indicates that progress in genetics of the thyroid cancer is extremely rapid.
Goldfarb, Melanie; Gondek, Stephan S; Sanchez, Yamile; Lew, John I
Thyroid nodules in pediatric patients may carry a greater risk for malignancy than in adults. Most nodules >1 cm in patients ≤ 21 years of age may require thyroidectomy for definitive diagnosis and treatment. Although clinic-based ultrasound (CBUS) has been shown useful in the evaluation of thyroid nodules in adults, its utility in evaluating nodules in the pediatric population remains unclear. Prospectively collected data regarding 50 patients ≤ 21 years who underwent preoperative CBUS and initial thyroidectomy at a single institution were retrospectively reviewed. All CBUS were performed by endocrine surgeons certified in basic and cervical ultrasonography. Preoperative CBUS characteristics of pediatric thyroid nodules were analyzed with respect to final pathology. Of the 50 patients ≤ 21 years of age who underwent surgical resection for a dominant thyroid nodule, there were 45 females and 5 males with an average age of 17.4 years (range: 10-21 years). On univariate analysis, microcalcifications (p<0.001), abnormal lymph nodes (p<0.001), and dimensions taller more than wide (p=0.033) were individual CBUS characteristics predictive of thyroid malignancy. All nine patients with abnormal lymph nodes on CBUS had malignant disease on final pathology. Multiple thyroid nodules, a cystic component, and echogenicity did not predict malignancy; regular borders trended toward predicting a benign nodule (p=0.066). When malignant ultrasound features were considered (i.e., hypoechoic, irregular borders, microcalcifications, abnormal lymph nodes, and shape taller more than wide), having one malignant feature predicted malignancy with an odds ratio of 2.0 while having ≥ 2 features held even greater significance (p=0.004, OR 4.0). All patients with ≥ 3 malignant ultrasound features had thyroid cancer on final pathology. CBUS is a useful diagnostic modality in determining malignancy status of thyroid nodules in patients ≤ 21 years of age. CBUS should be employed as
Elsayed, Naglaa Mostafa; Elkhatib, Yasser Atta
Thyroid nodules are a common medical and surgical concern. Thyroid ultrasound (US) is the primary imaging modality used for initial evaluation and assortment of nodules for fine needle aspiration (FNA) cytology/biopsy. Ultrasound elastography (USE) is believed to improve the diagnostic accuracy of US in distinguishing benign from malignant nodules. The aim of the work described here is to evaluate the diagnostic criteria and accuracy of US and USE in the diagnosis of malignant thyroid nodules. A prospective study of 88 patients who have thyroid nodules was performed. US, color Doppler, and USE were evaluated using a Philips iU22 equipped with a 5 to 12 MHz, linear transducer, followed by FNA of the each scanned nodule. The most sensitive US criteria for malignant nodules were a height-to-width ratio greater than one and the absence of a halo sign (sensitivity 0.875% and 1.000%, respectively). The most specific criteria for malignancy were a spiculated/blurred margin and the presence of microcalcifications (specificity 0.968% and 0.888%, respectively). The receiver operating characteristic curve showed that the cutoff diagnostic criteria of malignancy are two US characteristics and an elastography score of 4. The diagnostic accuracy of US for malignant thyroid nodules increases by combining US and USE.
... of thyroiditis and identify autoimmune thyroid conditions Thyroid peroxidase (TPO) antibody—a marker for autoimmune thyroid disease; ... to help detect the presence of excessive calcitonin production, which can occur with C-cell hyperplasia and ...
... page: //medlineplus.gov/ency/article/000352.htm Anaplastic thyroid cancer To use the sharing features on this page, ... of cancer of the thyroid gland. Causes Anaplastic thyroid cancer is an invasive type of thyroid cancer that ...
... Marketplace Find an ENT Doctor Near You Pediatric Thyroid Cancer Pediatric Thyroid Cancer Patient Health Information News media ... and neck issues, should be consulted. Types of thyroid cancer in children: Papillary : This form of thyroid cancer ...
Thyroid - medullary carcinoma; Cancer - thyroid (medullary carcinoma); MTC; Thyroid nodule - medullary ... in children and adults. Unlike other types of thyroid cancer, MTC is less likely to be caused by ...
... will make your scar show less. Thyroid Hormone Replacement You may need to take thyroid hormone medicine ... natural thyroid hormone. You may not need hormone replacement if only part of your thyroid was removed. ...
... in Some People Who Were Treated with hGH Pregnancy & Thyroid Disease What is thyroid disease? Thyroid disease ... pituitary responds by decreasing TSH production. How does pregnancy normally affect thyroid function? Two pregnancy-related hormones— ...
Hard, G C
This review covers new mechanistic information spanning the past 10 years relevant to normal and abnormal thyroid growth and function that may assist in the risk assessment of chemicals inducing thyroid follicular cell neoplasia. Recent studies have shown that thyroid regulation occurs via a complex interactive network mediated through several different messenger systems. Increased thyroid-stimulating hormone (TSH) levels activate the signal transduction pathways to stimulate growth and differentiation of the follicular cell. The important role of TSH in growth as well as in function helps to explain how disruptions in the thyroid-pituitary axis may influence thyroid neoplasia in rodents. New investigations that couple mechanistic studies with information from animal cancer bioassays (e. g., sulfamethazine studies) confirm the linkage between prolonged disruption of the thyroid-pituitary axis and thyroid neoplasia. New initiation/promotion studies in rodents also support the concept that chronic stimulation of the thyroid induced by goitrogens can result in thyroid tumors. Some of these studies confirm previous suggestions regarding the importance of chemically induced thyroid peroxidase inhibition and the inhibition of 3,3',5, 5'-tetraiodothyronine (T4, thyroxine) deiodinases on disruption of the thyroid-pituitary axis leading to thyroid neoplasia. Some comparative physiologic and mechanistic data highlight certain differences between rodents and humans that could be expected to confer an increased vulnerability of rodents to chronic hypersecretion of TSH. New data from epidemiologic and molecular genetic studies in humans contribute further to an understanding of thyroid neoplasia. Acute exposure to ionizing radiation, especially in childhood, remains the only verified cause of thyroid carcinogenesis in humans. Iodine deficiency studies as a whole remain inconclusive, even though several new studies in humans examine the role of dietary iodine deficiency in
McMillen, Brock; Dhillon, Manvinder Shelley; Yong-Yow, Sabrina
Thyroid storm is a rare and life-threatening state of thyroid hormone excess. Rapid recognition of thyroid storm is key to decreasing the morbidity and mortality of this condition. Clinical manifestations of thyroid storm include unexplained weight loss, hyperactivity and irritability. The most common causes of thyrotoxicosis are Graves' disease, toxic multinodular goitre and toxic adenoma. We present a rare case of thyroid storm induced by dual nivolumab and ipilimumab immunotherapy in a patient receiving treatment for advanced melanoma. In this case, our patient was admitted for thyroid storm 1 month after initiating treatment with nivolumab and ipilimumab immunotherapy. The patient was treated with β-blockers, antithyroid medications and systemic steroids resulting in an improvement in thyroid function testing and symptoms. 2016 BMJ Publishing Group Ltd.
Vertigo - positional - aftercare; Benign paroxysmal positional vertigo - aftercare; BPPV - aftercare; Dizziness - positional vertigo ... Your health care provider may have treated your vertigo with the Epley maneuver . These are head movements ...
... Clinical practice guideline: Benign paroxysmal positional vertigo. Otolaryngol Head Neck Surg . 2008;139(5 Suppl 4):S47-S81. ... BH, Lund V, et al, eds. Cummings Otolaryngology: Head & Neck Surgery . 6th ed. Philadelphia, PA: Elsevier Mosby; 2015: ...
Peaslee, Graham; Lantz, Juliette M.; Walczak, Mary M.
Uses a case study of food poisoning from hamburgers at the fictitious Jill-at-the-Grill to teach the nuclear science behind food irradiation. Includes case teaching notes on the benign hamburger. (ASK)
Total thyroidectomy; Partial thyroidectomy; Thyroidectomy; Subtotal thyroidectomy; Thyroid cancer - thyroidectomy; Papillary cancer - thyroidectomy; Goiter - thyroidectomy; Thyroid nodules - thyroidectomy
Bhandarkar, D S; Smith, V J; Evans, D A; Taylor, T V
The well defined but rare entity of benign cystic mesothelioma is reported. The aetiology of this neoplasm remains obscure. The presenting features make a precise preoperative diagnosis difficult; information provided by computed tomography and cytology may help. A firm diagnosis can only come from electron microscopic or immunohistochemical examination of the tumour. Diagnostic accuracy and diligent follow up are essential because, although the tumour is considered benign, it does tend towards local recurrence. Images PMID:8227441
Allan, Rodney; Chaseling, Raymond; Graf, Nicole; Dexter, Mark
'Benign' aqueduct stenosis is a common cause of hydrocephalus in the paediatric population and is frequently treated by endoscopic third ventriculostomy. Occasionally, aqueduct stenosis can be a prelude to the development of other pathology, as is seen in these two cases of pineal tumours developing in patients whose hydrocephalus was successfully treated with endoscopic third ventriculostomy. The case histories are presented, along with the recommendation for increased radiological screening of patients with this usually 'benign' presentation.
Porcel, J M
In this narrative review we describe the main aetiologies, clinical characteristics and treatment for patients with benign pleural effusion that characteristically persists over time: chylothorax and cholesterol effusions, nonexpansible lung, rheumatoid pleural effusion, tuberculous empyema, benign asbestos pleural effusion and yellow nail syndrome. Copyright © 2017 Elsevier España, S.L.U. and Sociedad Española de Medicina Interna (SEMI). All rights reserved.
... Thyroid Cancer Causes, Risk Factors, and Prevention Can Thyroid Cancer Be Prevented? Most people with thyroid cancer ... Cancer? Can Thyroid Cancer Be Prevented? More In Thyroid Cancer About Thyroid Cancer Causes, Risk Factors, and ...
... rays given off by the radioactive material. A computer displays images of the thyroid gland. Other scans ... It is an even gray color on the computer image without darker or lighter areas. What Abnormal ...
... The coming of age of ultrasound-guided percutaneous ethanol ablation of selected neck nodal metastases in well-differentiated thyroid carcinoma. Journal of Clinical Endocrinology & Metabolism. 2011;96:2717. Caprelsa (prescribing information). Wilmington, Del.: ...
Cunningham, R. H.
From the results of the various experiments already detailed I feel justified in drawing the following conclusions: (1) Absolutely fresh thyroid gland is not poisonous, in the usual sense of the term, when absorbed through the alimentary canal. (2) The symptoms of induced thyroidism are manifestations of an intoxication resulting from the ingestion of decomposed thyroid material, a conclusion that agrees in part with the previously related observations of Lanz. (3) The so-called experimental thyroidism is not specific for the thyroid only, for the ingestion of many substances derived from animal tissues other than the thyroid gland may produce an intoxication strikingly similar in every respect to that of experimental thyroidism. (4) Most, if not all, animal tissues yield substances which, if injected in large quantities directly into the circulation or beneath the skin, will produce an intoxication often very similar to that produced by injections of various substances derived from the fresh thyroid tissue. (5) The effects resulting from the intravascular or subcutaneous injections of aqueous extracts, decoctions and the concentrated extractives of the thyroid tissue, of the thymus, of muscle, etc., are by no means necessarily indicative of the function and the action of the hypothetical internal secretions of the same tissues during life. (6) The utilization of the fact that ingestion of decomposed thyroid material produces on certain occasions an intoxication with certain symptoms similar to some of those of G-raves' disease is not justifiable for the furtherance of the theory that the symptoms of exophthalmic goitre result from an over-production of the thyroid secretion. (7) Our results lead us to conclude with Drechsel that the fresh thyroid tissue yields at least probably two substances that are capable of palliating the symptoms of the acute cachexia in totally thyroidless dogs. (8) The thymus tissue also yields one and probably two substances that are as
Cunningham, R H
FROM THE RESULTS OF THE VARIOUS EXPERIMENTS ALREADY DETAILED I FEEL JUSTIFIED IN DRAWING THE FOLLOWING CONCLUSIONS: (1) Absolutely fresh thyroid gland is not poisonous, in the usual sense of the term, when absorbed through the alimentary canal. (2) The symptoms of induced thyroidism are manifestations of an intoxication resulting from the ingestion of decomposed thyroid material, a conclusion that agrees in part with the previously related observations of Lanz. (3) The so-called experimental thyroidism is not specific for the thyroid only, for the ingestion of many substances derived from animal tissues other than the thyroid gland may produce an intoxication strikingly similar in every respect to that of experimental thyroidism. (4) Most, if not all, animal tissues yield substances which, if injected in large quantities directly into the circulation or beneath the skin, will produce an intoxication often very similar to that produced by injections of various substances derived from the fresh thyroid tissue. (5) The effects resulting from the intravascular or subcutaneous injections of aqueous extracts, decoctions and the concentrated extractives of the thyroid tissue, of the thymus, of muscle, etc., are by no means necessarily indicative of the function and the action of the hypothetical internal secretions of the same tissues during life. (6) The utilization of the fact that ingestion of decomposed thyroid material produces on certain occasions an intoxication with certain symptoms similar to some of those of G-raves' disease is not justifiable for the furtherance of the theory that the symptoms of exophthalmic goitre result from an over-production of the thyroid secretion. (7) Our results lead us to conclude with Drechsel that the fresh thyroid tissue yields at least probably two substances that are capable of palliating the symptoms of the acute cachexia in totally thyroidless dogs. (8) The thymus tissue also yields one and probably two substances that are as
Gavin, L A
In the setting of characteristic features of thyrotoxicosis, the timely diagnosis and aggressive management of thyroid storm should result in a successful outcome. However, severe storm may lead to irreversible cardiovascular collapse, especially in the older patient who may have atypical features of thyrotoxicosis. The fundamental approach is prompt and optimal treatment in the emergency department once the presenting clinical features suggest its presence. Delay in the introduction of therapy while awaiting laboratory confirmation may result in further decompensation and death. The prevention of myxedema coma entails paying special attention to certain high-risk patient groups. These groups include older women with a history of Hashimoto's thyroiditis, or previous irradiation or thyroid surgery for hyperthyroidism. Inform such patients of the symptoms and signs of hypothyroidism, and perform annual thyroid function tests, such as a serum TSH, in order to provide early, adequate treatment once the test becomes positive.
Bhargava, Amit; Kaur, Manmeet
The key to uncovering the etiology of hyperthyroidism lies in a careful history and physical examination. Autoimmune markers provide additive information, but should not solely be used to make a diagnosis. Concern has been raised that the overzealous use of thyroid ultrasound, following abnormal thyroid function tests, diverts attention from the workup of the biochemical abnormality to the workup of an incidentally found thyroid nodule. If further imaging is needed, the use ofathyroidscanhas been suggestedbythe Endocrine Society and the American Association of Clinical Endocrinologists. However, in certain scenarios, this may be contraindicated. We present the case of a 28-year-old female with hyperthyroidism, as aplatform to discuss an important clinical sign present on Doppler ultrasound of the thyroid. By recognizing the clinical information gained from a Doppler ultrasound, physicians can avoid additional invasive workup and apply the use of ultrasound where most appropriate.
Zhang, Tan; Li, Fangxuan; Mu, Jiali; Liu, Juntian; Zhang, Sheng
To explore the significance of ultrasonic features in differential diagnosis of thyroid nodules via combining the thyroid imaging reporting and data system (TI-RADS) and multivariate statistical analysis. Patients who received surgical treatment and was diagnosed with single thyroid nodule by postoperative pathology and preoperative ultrasound were enrolled in this study. Multivariate analysis was applied to assess the significant ultrasonic features which correlated with identifying benign or malignance and grading the TI-RADS classification of thyroid nodule. There were significant differences in the nodule size, aspect ratio, internal, echogenicity, boundary, presence or absence of calcifications, calcification type and CDFI between benign and malignant thyroid nodules. Multivariate analysis showed clear-cut distinction both between benign and malignance and among different TI-RADS categories of malignancy nodules. The shape and calcification of the nodule were important factors for distinguish the benign and malignance. Height of the nodule, aspect and calcification was important factors for grading TI-RADS categories of malignancy thyroid nodules. Ill-defined boundary, irregular shape and presence of calcification related with highly malignant risk for thyroid nodule. The larger height and aspect and presence of calcification related with higher TI-RADS classification of malignancy thyroid nodule.
Efficacy and Safety of Initial Combination Treatment of an Alpha Blocker with an Anticholinergic Medication in Benign Prostatic Hyperplasia Patients with Lower Urinary Tract Symptoms: Updated Meta-Analysis
Kim, Hyun Jung; Sun, Hwa Yeon; Choi, Hoon; Park, Jae Young; Bae, Jae Hyun; Doo, Seung Whan; Yang, Won Jae; Song, Yun Seob; Ko, Young Myoung
Background There is still controversy as to whether initial combination treatment is superior to serial addition of anticholinergics after maintenance or induction of alpha blockers in benign prostatic hyperplasia (BPH)/lower urinary tract symptoms (LUTS) Objective The objective of this study was to determine the benefits and safety of initial combination treatment of an alpha blocker with anticholinergic medication in BPH/LUTS through a systematic review and meta-analysis. Methods We conducted a meta-analysis of improvement in LUTS using International Prostate Symptom Score (IPSS), maximal urinary flow rate (Qmax), post-voided residual volume (PVR), and quality of life (QoL). Results In total, 16 studies were included in our analysis, with a total sample size of 3,548 subjects (2,195 experimental subjects and 1,353 controls). The mean change in total IPSS improvement from baseline in the combination group versus the alpha blocker monotherapy group was -0.03 (95% CI: -0.14–0.08). The pooled overall SMD change of storage IPSS improvement from baseline was -0.28 (95% CI: -0.40 - -0.17). The pooled overall SMD changes of QoL, Qmax, and PVR were -0.29 (95% CI: -0.50 - -0.07), 0.00 (95% CI: -0.08–0.08), and 0.56 (95% CI: 0.23–0.89), respectively. There was no significant difference in the number of acute urinary retention (AUR) events or PVR. Conclusions Initial combination treatment of an alpha blocker with anticholinergic medication is efficacious for in BPH/ LUTS with improved measures such as storage symptoms and QoL without causing significant deterioration of voiding function. PMID:28072862
Efficacy and Safety of Initial Combination Treatment of an Alpha Blocker with an Anticholinergic Medication in Benign Prostatic Hyperplasia Patients with Lower Urinary Tract Symptoms: Updated Meta-Analysis.
Kim, Hyun Jung; Sun, Hwa Yeon; Choi, Hoon; Park, Jae Young; Bae, Jae Hyun; Doo, Seung Whan; Yang, Won Jae; Song, Yun Seob; Ko, Young Myoung; Kim, Jae Heon
There is still controversy as to whether initial combination treatment is superior to serial addition of anticholinergics after maintenance or induction of alpha blockers in benign prostatic hyperplasia (BPH)/lower urinary tract symptoms (LUTS). The objective of this study was to determine the benefits and safety of initial combination treatment of an alpha blocker with anticholinergic medication in BPH/LUTS through a systematic review and meta-analysis. We conducted a meta-analysis of improvement in LUTS using International Prostate Symptom Score (IPSS), maximal urinary flow rate (Qmax), post-voided residual volume (PVR), and quality of life (QoL). In total, 16 studies were included in our analysis, with a total sample size of 3,548 subjects (2,195 experimental subjects and 1,353 controls). The mean change in total IPSS improvement from baseline in the combination group versus the alpha blocker monotherapy group was -0.03 (95% CI: -0.14-0.08). The pooled overall SMD change of storage IPSS improvement from baseline was -0.28 (95% CI: -0.40 - -0.17). The pooled overall SMD changes of QoL, Qmax, and PVR were -0.29 (95% CI: -0.50 - -0.07), 0.00 (95% CI: -0.08-0.08), and 0.56 (95% CI: 0.23-0.89), respectively. There was no significant difference in the number of acute urinary retention (AUR) events or PVR. Initial combination treatment of an alpha blocker with anticholinergic medication is efficacious for in BPH/ LUTS with improved measures such as storage symptoms and QoL without causing significant deterioration of voiding function.
Response of thyroid follicular cells to gamma irradiation compared to proton irradiation. I. Initial characterization of DNA damage, micronucleus formation, apoptosis, cell survival, and cell cycle phase redistribution
Green, L. M.; Murray, D. K.; Bant, A. M.; Kazarians, G.; Moyers, M. F.; Nelson, G. A.; Tran, D. T.
The RBE of protons has been assumed to be equivalent to that of photons. The objective of this study was to determine whether radiation-induced DNA and chromosome damage, apoptosis, cell killing and cell cycling in organized epithelial cells was influenced by radiation quality. Thyroid-stimulating hormone-dependent Fischer rat thyroid cells, established as follicles, were exposed to gamma rays or proton beams delivered acutely over a range of physical doses. Gamma-irradiated cells were able to repair DNA damage relatively rapidly so that by 1 h postirradiation they had approximately 20% fewer exposed 3' ends than their counterparts that had been irradiated with proton beams. The persistence of free ends of DNA in the samples irradiated with the proton beam implies that either more initial breaks or a quantitatively different type of damage had occurred. These results were further supported by an increased frequency of chromosomal damage as measured by the presence of micronuclei. Proton-beam irradiation induced micronuclei at a rate of 2.4% per gray, which at 12 Gy translated to 40% more micronuclei than in comparable gamma-irradiated cultures. The higher rate of micronucleus formation and the presence of larger micronuclei in proton-irradiated cells was further evidence that a qualitatively more severe class of damage had been induced than was induced by gamma rays. Differences in the type of damage produced were detected in the apoptosis assay, wherein a significant lag in the induction of apoptosis occurred after gamma irradiation that did not occur with protons. The more immediate expression of apoptotic cells in the cultures irradiated with the proton beam suggests that the damage inflicted was more severe. Alternatively, the cell cycle checkpoint mechanisms required for recovery from such damage might not have been invoked. Differences based on radiation quality were also evident in the alpha components of cell survival curves (0.05 Gy(-1) for gamma rays, 0
Response of thyroid follicular cells to gamma irradiation compared to proton irradiation. I. Initial characterization of DNA damage, micronucleus formation, apoptosis, cell survival, and cell cycle phase redistribution
Green, L. M.; Murray, D. K.; Bant, A. M.; Kazarians, G.; Moyers, M. F.; Nelson, G. A.; Tran, D. T.
The RBE of protons has been assumed to be equivalent to that of photons. The objective of this study was to determine whether radiation-induced DNA and chromosome damage, apoptosis, cell killing and cell cycling in organized epithelial cells was influenced by radiation quality. Thyroid-stimulating hormone-dependent Fischer rat thyroid cells, established as follicles, were exposed to gamma rays or proton beams delivered acutely over a range of physical doses. Gamma-irradiated cells were able to repair DNA damage relatively rapidly so that by 1 h postirradiation they had approximately 20% fewer exposed 3' ends than their counterparts that had been irradiated with proton beams. The persistence of free ends of DNA in the samples irradiated with the proton beam implies that either more initial breaks or a quantitatively different type of damage had occurred. These results were further supported by an increased frequency of chromosomal damage as measured by the presence of micronuclei. Proton-beam irradiation induced micronuclei at a rate of 2.4% per gray, which at 12 Gy translated to 40% more micronuclei than in comparable gamma-irradiated cultures. The higher rate of micronucleus formation and the presence of larger micronuclei in proton-irradiated cells was further evidence that a qualitatively more severe class of damage had been induced than was induced by gamma rays. Differences in the type of damage produced were detected in the apoptosis assay, wherein a significant lag in the induction of apoptosis occurred after gamma irradiation that did not occur with protons. The more immediate expression of apoptotic cells in the cultures irradiated with the proton beam suggests that the damage inflicted was more severe. Alternatively, the cell cycle checkpoint mechanisms required for recovery from such damage might not have been invoked. Differences based on radiation quality were also evident in the alpha components of cell survival curves (0.05 Gy(-1) for gamma rays, 0
Response of thyroid follicular cells to gamma irradiation compared to proton irradiation. I. Initial characterization of DNA damage, micronucleus formation, apoptosis, cell survival, and cell cycle phase redistribution.
Green, L M; Murray, D K; Bant, A M; Kazarians, G; Moyers, M F; Nelson, G A; Tran, D T
The RBE of protons has been assumed to be equivalent to that of photons. The objective of this study was to determine whether radiation-induced DNA and chromosome damage, apoptosis, cell killing and cell cycling in organized epithelial cells was influenced by radiation quality. Thyroid-stimulating hormone-dependent Fischer rat thyroid cells, established as follicles, were exposed to gamma rays or proton beams delivered acutely over a range of physical doses. Gamma-irradiated cells were able to repair DNA damage relatively rapidly so that by 1 h postirradiation they had approximately 20% fewer exposed 3' ends than their counterparts that had been irradiated with proton beams. The persistence of free ends of DNA in the samples irradiated with the proton beam implies that either more initial breaks or a quantitatively different type of damage had occurred. These results were further supported by an increased frequency of chromosomal damage as measured by the presence of micronuclei. Proton-beam irradiation induced micronuclei at a rate of 2.4% per gray, which at 12 Gy translated to 40% more micronuclei than in comparable gamma-irradiated cultures. The higher rate of micronucleus formation and the presence of larger micronuclei in proton-irradiated cells was further evidence that a qualitatively more severe class of damage had been induced than was induced by gamma rays. Differences in the type of damage produced were detected in the apoptosis assay, wherein a significant lag in the induction of apoptosis occurred after gamma irradiation that did not occur with protons. The more immediate expression of apoptotic cells in the cultures irradiated with the proton beam suggests that the damage inflicted was more severe. Alternatively, the cell cycle checkpoint mechanisms required for recovery from such damage might not have been invoked. Differences based on radiation quality were also evident in the alpha components of cell survival curves (0.05 Gy(-1) for gamma rays, 0
Luca, F; Goichot, B; Brue, T
Abnormalities in the circulating levels of thyroid hormones, without evidence of coexisting thyroid or pituitary gland disease can be observed in all general diseases. These nonthyroidal illnesses (NTIS) are the result of complex mechanisms that combine the effect of some drugs, cytokines, nutritional and endocrine factors at all levels of the thyrotropic axis, from the hypothalamus to the cellular transporters and nuclear receptors of thyroid hormones. The patterns of NTIS depend on the underlying disease and its severity. Thirtyfive years after the initial description, the pathophysiological significance of these anomalies remains controversial. One of the dilemma of NTIS is whether the hormone responses represent an adaptive and normal, physiologic response to conserve energy and protect against hypercatabolism in case of aggression, or whether it is a maladaptive response contributing to a worsening of the disease. This debate is not just a theoretical question, because in the first case the process must be respected, in the other case a vigorous treatment to restore circulating thyroid hormone levels is justified. There have been very few clinical studies designed to address whether the substitution with thyroid hormone is advantageous, and there is at current time no permissive evidence for the use of thyroid hormone replacement in patients with NTIS. But the clinical context, the choice of the molecule or of the dose and the way of administration were not necessarily the most relevant. Theoretically, stimulation of thyreotrope axis used a continuous infusion of TRH seems to provide clinical benefit. With the expectation that randomized clinical trials will provide demonstration of NTIS treatment efficiency, the question might remain unanswered for several more years. Copyright Â© 2010 Elsevier Masson SAS. All rights reserved.
Untch, Brian R; Olson, John A
Anaplastic thyroid carcinoma, thyroid lymphoma, and secondary metastasis to the thyroid gland are uncommon thyroid malignancies. They represent significant challenges for the surgeon owing to difficulties in diagnosis, aggressive biology, and the infrequency of their presentation. An awareness and appreciation of multimodality treatment strategies is essential for their management.
Expression of papillary thyroid carcinoma-associated molecular markers and their significance in follicular epithelial dysplasia with papillary thyroid carcinoma-like nuclear alterations in Hashimoto's thyroiditis.
Ma, Heng; Yan, Jin; Zhang, Chao; Qin, Shenghui; Qin, Lingzhi; Liu, Liwei; Wang, Xi; Li, Naping
The aim of this study was to evaluate the expression of papillary thyroid carcinoma (PTC)-associated tumor markers in follicular epithelial dysplasia showing PTC-like nuclear alterations (FED) in Hashimoto's thyroiditis (HT) and to explore the relationship between HT and PTC. In this study, 43 PTC, 18 HT with FED and 16 peritumoral benign thyroid tissues were immunohistochemically analyzed for CK19, galectin-3, HBME-1, CD56, claudin-1 and NGAL expression. Our research revealed that in HT, the expression of CK19, galectin-3, HBME-1, claudin-1 and NGAL was focal and limited to FED, while CD56 was strongly positive in FED and most Hürthle cells. The stain intensity of CK19, claudin-1 and NGAL in FED decreased compared with PTC, but were significantly higher than that in peritumoral benign thyroid tissues (all P < 0.0125). For galectin-3, HBME-1 and CD56, no statistically significant difference was detected between HT and peritumoral benign thyroid tissues (all P > 0.05). In conclusion, In HT, FED might be a precancerous condition closely associated with PTC development as they have overlaps in cytological and immunomarker profiles, indicating that in patients with HT, under prolonged stimuli from chronic inflammation, part of follicular epithelia may show regeneration, hyperplasia, Hürthle cell metaplasia and dysplasia, eventually malignant transformation. Hence, long term follow-up and regular inspection would be necessary for Hashimoto's thyroiditis with FED.
Wang, Dong; Feng, Jia-Fu; Zeng, Ping; Yang, Yun-Hong; Luo, Jun; Yang, Yu-Wei
Oxidative stress is considered to be involved in the pathophysiology of all cancers. In order to evaluate the total oxidant/antioxidant status in patients with thyroid cancer and to investigate the relationship between oxidative stress parameters and serum thyroid profiles among thyroid cancer patients and various controls, we determined oxidative status including total antioxidant status (TAS) and total oxidant status (TOS) and calculation of oxidative stress index (OSI) in sera in 82 thyroid cancer patients, 56 benign thyroid disease patients, and 50 healthy controls. It was found that serum TAS levels were significantly lower in patients with thyroid cancer than in controls (P<0.001), while serum TOS levels and OSI values were significantly higher (both P<0.001) in the cancer patients. No significant correlations were observed between various oxidative stress markers and thyroid profiles in either the thyroid cancer patients or the controls. Receiver operating characteristic curve analysis demonstrated that OSI was the best indicator for distinguishing cancer patients from benign thyroid diseased or healthy controls, followed by TOS and TAS. Risk estimate statistics also indicated that TOS and/or OSI were good risk factors to discriminate patients with thyroid cancer from two controls. These findings suggested that oxidants are increased and antioxidants are decreased in patients with thyroid cancer. OSI may be a more useful oxidative stress biomarker than TAS and TOS for monitoring the clinical status of thyroid cancer patients. PMID:22002574
Jouhar, Fatima S.; Quadri, Asif; Afandi, Bachar; Al Rawi, Sadir
This case represents occult follicular variant of papillary thyroid carcinoma (FVPTC) with large metastasis to the sacrum. The patient, a 42-year-old female, presented after hemithyroidectomy for benign follicular adenoma with lower back pain associated with fever and sweating. A lytic lesion of the left sacral bone was found on the CT with biopsy showing metastatic carcinoma with morphology and immunophenotype of thyroid gland primary tumor proven to be FVPTC. The patient had completion thyroidectomy with benign pathology. PMID:25544844
Ardito, G; Revelli, L; Guidi, M L; Murazio, M; Lucci, C; Modugno, P; Di Giovanni, V
Bleeding represents a rare complication of thyroid surgery but when it occurs it may be life-threatening. To prevent this complication drainage is widely used. However no study has demonstrated the drains' value and recent reports have questioned its benefits. Therefore we have analyzed our experience of a 10 year-period in which 1.217 thyroidectomies were performed by the same surgical team and prophylactic routine drainage was always adopted. In 13 patients (1.06%) a benign hematoma occurred with spontaneous remission. In 6 patients the bleeding was severe and compressive hematoma occurred; it required surgical re-exploration. Such a complication is unusual in the neck surgery (0.49% in the authors' series) performed by experienced surgeons and when life-threatening hematomas do occur they depend on various uncontrolled factors and drainage is often not helpful. Otherwise a meticulous haemostatic technique is necessary and patients should be observed very closely during the few first hours following surgery on the thyroid gland. Therefore on the basis of the analysis of their series, although it is not always possible to prove the benefit of the drainage, the authors suggest its indication in the neck surgery, as in other fields with dead space, to remove blood and secretions reducing postoperative complications. They have never observed wound infections and patients were discharged within 72 hours.
Aoki, Rie; Srivatanakul, Kittipong
Developmental venous anomalies (DVAs), previously called venous angiomas, are the most frequently encountered cerebral vascular malformations. However, DVA is considered to be rather an extreme developmental anatomical variation of medullary veins than true malformation. DVAs are composed of dilated medullary veins converging centripetally into a large collecting venous system that drains into the superficial or deep venous system. Their etiology and mechanism are generally accepted that DVAs result from the focal arrest of the normal parenchymal vein development or occlusion of the medullary veins as a compensatory venous system. DVAs per se are benign and asymptomatic except for under certain unusual conditions. The pathomechanisms of symptomatic DVAs are divided into mechanical, flow-related causes, and idiopathic. However, in cases of DVAs associated with hemorrhage, cavernous malformations (CMs) are most often the cause rather than DVAs themselves. The coexistence of CM and DVA is common. There are some possibilities that DVA affects the formation and clinical course of CM because CM related to DVA is generally located within the drainage territory of DVA and is more aggressive than isolated CM in the literature. Brain parenchymal abnormalities surrounding DVA and cerebral varix have also been reported. These phenomena are considered to be the result of venous hypertension associated with DVAs. With the advance of diagnostic imagings, perfusion study supports this hypothesis demonstrating that some DVAs have venous congestion pattern. Although DVAs should be considered benign and clinically silent, they can have potential venous hypertension and can be vulnerable to hemodynamic changes.
AOKI, Rie; SRIVATANAKUL, Kittipong
Developmental venous anomalies (DVAs), previously called venous angiomas, are the most frequently encountered cerebral vascular malformations. However, DVA is considered to be rather an extreme developmental anatomical variation of medullary veins than true malformation. DVAs are composed of dilated medullary veins converging centripetally into a large collecting venous system that drains into the superficial or deep venous system. Their etiology and mechanism are generally accepted that DVAs result from the focal arrest of the normal parenchymal vein development or occlusion of the medullary veins as a compensatory venous system. DVAs per se are benign and asymptomatic except for under certain unusual conditions. The pathomechanisms of symptomatic DVAs are divided into mechanical, flow-related causes, and idiopathic. However, in cases of DVAs associated with hemorrhage, cavernous malformations (CMs) are most often the cause rather than DVAs themselves. The coexistence of CM and DVA is common. There are some possibilities that DVA affects the formation and clinical course of CM because CM related to DVA is generally located within the drainage territory of DVA and is more aggressive than isolated CM in the literature. Brain parenchymal abnormalities surrounding DVA and cerebral varix have also been reported. These phenomena are considered to be the result of venous hypertension associated with DVAs. With the advance of diagnostic imagings, perfusion study supports this hypothesis demonstrating that some DVAs have venous congestion pattern. Although DVAs should be considered benign and clinically silent, they can have potential venous hypertension and can be vulnerable to hemodynamic changes. PMID:27250700
Hameed, R; Zacharin, M R
The aims of our study were to review the Royal Children's Hospital cohort of children having thyroidectomy for thyroid nodules over the last 8 years and to report the changing pattern of thyroid cancer seen in our institution over that time. We undertook a retrospective case-note review of all patients who underwent thyroid surgery between 1997 and 2004. Of 69 patients identified, the pathological diagnoses were 51 benign tumours, 14 thyroid cancers and four cases of multiple endocrine neoplasia type 2, who were treated with prophylactic thyroidectomy. Sixteen of the 69 patients had a history of childhood cancer and 10/16 had cancer treatment which included direct or scatter radiation. Of the 10 patients who received irradiation, four had follicular adenomas and six developed thyroid cancer. All six patients were euthyroid: one patient was presented with a palpable nodule and the other five were detected on surveillance ultrasound. Our results confirm a high detection of malignancy in thyroid nodules in childhood. Compared to an earlier study at this institution, the number of thyroid malignancies appears to be increasing. Surveillance at the Royal Children's Hospital has changed, with increased long-term cancer survival. Prospective 2-yearly evaluation of those with a past history of radiation exposure has resulted in earlier detection of benign and malignant thyroid lesions. Nodular changes are usually not clinically apparent for many years and lifelong surveillance is necessary for cancer detection in this group.
Andrioli, Massimiliano; Carzaniga, Chiara; Persani, Luca
Background Ultrasonography (US) plays a crucial role in the diagnostic management of thyroid nodules, but its widespread use in clinical practice might generate heterogeneity in ultrasound reports. Objectives The aims of the study were to propose (a) a standardized lexicon for description of thyroid nodules in order to reduce US reports of interobserver variability and (b) a US classification system of suspicion for thyroid nodules in order to promote a uniform management of thyroid nodules. Methods Relevant published articles were identified by searching MEDLINE at PubMed combining the following search terms: ultrasonography, thyroid, nodule, malignancy, carcinoma, and classification system. Results were supplemented with our data and experience. Results A standardized US report should always document position, extracapsular relationships, number, and the following characteristics of each thyroid lesion: shape, internal content, echogenicity, echotexture, presence of calcifications, margins, vascularity, and size. Combining the previous US features, each thyroid nodule can be tentatively classified as: malignant, suspicious for malignancy, borderline, probably benign, and benign. Conclusions We propose a standardized US report and a tentative US classification system that may become helpful for endocrinologists dealing with thyroid nodules in their clinical practice. The proposed classification does not allow to bypass the required cytological confirmation, but may become useful in identifying the lesions with a lower risk of neoplasm. PMID:24783037
Andrioli, Massimiliano; Carzaniga, Chiara; Persani, Luca
Ultrasonography (US) plays a crucial role in the diagnostic management of thyroid nodules, but its widespread use in clinical practice might generate heterogeneity in ultrasound reports. The aims of the study were to propose (a) a standardized lexicon for description of thyroid nodules in order to reduce US reports of interobserver variability and (b) a US classification system of suspicion for thyroid nodules in order to promote a uniform management of thyroid nodules. RELEVANT PUBLISHED ARTICLES WERE IDENTIFIED BY SEARCHING MEDLINE AT PUBMED COMBINING THE FOLLOWING SEARCH TERMS: ultrasonography, thyroid, nodule, malignancy, carcinoma, and classification system. Results were supplemented with our data and experience. A STANDARDIZED US REPORT SHOULD ALWAYS DOCUMENT POSITION, EXTRACAPSULAR RELATIONSHIPS, NUMBER, AND THE FOLLOWING CHARACTERISTICS OF EACH THYROID LESION: shape, internal content, echogenicity, echotexture, presence of calcifications, margins, vascularity, and size. Combining the previous US features, each thyroid nodule can be tentatively classified as: malignant, suspicious for malignancy, borderline, probably benign, and benign. We propose a standardized US report and a tentative US classification system that may become helpful for endocrinologists dealing with thyroid nodules in their clinical practice. The proposed classification does not allow to bypass the required cytological confirmation, but may become useful in identifying the lesions with a lower risk of neoplasm.
Mehta, M.P.; Goetowski, P.G.; Kinsella, T.J.
Radiation for benign diseases has been implicated as an etiologic factor in thyroid cancer. From 1930-60, over 2 million children may have been exposed to therapeutic radiation and it is estimated that up to 7% may develop thyroid cancer after a 5-40 year latency. Thyroid stimulating hormone, secondary to radioinduced hypothyroidism, has been implicated as causative in animals. Such data has led to expensive screening programs in high risk patients. Because of a decline in irradiation for benign diseases in children over the last 2 decades, we questioned whether the incidence of radiation induced thyroid neoplasms (RITN) was also decreasing. Twenty-six of 227 patients (11%) with thyroid malignancies seen at our institution from 1974-87 had a history of previous head and neck irradiation. These included 13 papillary, 3 follicular, and 7 mixed carcinomas as well as 2 lymphomas and 1 synovial cell sarcoma. None of these 26 patients had abnormal thyroid function tests at presentation. Mean latency from irradiation to the diagnosis of thyroid cancer was 25.4 years (6-55 year range). Compared to the reported increasing incidence of RITN from 1940-70, there appears to be a significant decrease since 1970. Based on our analysis, the use of expensive screening programs in high risk populations may no longer be warranted. Additionally, the routine use of thyroid replacement in previously irradiated chemically hypothyroid patients is not recommended.30 references.
Hayashi, Michihiro; Takeshita, Atsushi; Yamamoto, Kazuhiro; Tanigawa, Nobuhiko
Schwannoma is predominantly a benign neoplasm of the Schwann cells in the neural sheath of the peripheral nerves. Occurrence of schwannoma in parenchymatous organs, such as liver, is extremely rare. A 64-year-old man without neurofibromatosis was observed to have a space-occupying lesion of 23mm diameter in the liver during follow-up examination for a previously resected gastrointestinal stromal tumor (GIST) in the small intestine. He underwent lateral segmentectomy of the liver under a provisional diagnosis of hepatic metastatic recurrence of the GIST. Histological examination confirmed the diagnosis of a benign schwannoma, confirmed by characteristic pathological findings and positive immunoreactions with the neurogenic marker S-100 protein, but negative for c-kit, or CD34. The tumor was the smallest among the reported cases. When the primary hepatic schwannoma is small in size, preoperative clinical diagnosis is difficult. Therefore, this disease should be listed as differential diagnosis for liver tumor with clinically benign characteristics. PMID:22530081
Serrie, A; Thurel, C
Recent data indicate that 25 to 30% of the population in industrialized countries suffers from benign chronic pain. Among these patients, 50 to 75% are professionally incapable for varied lengths of time, from a few days to some weeks or months, or even definitively. The aetiology and clinical presentation of chronic benign pain are enormously varied because this definition includes such different pathologies as headache, pain of rheumatologic, postsurgical, organic, and post-zoster origin, lombalgia, radiculalgia, post-amputation pain, neuropathologic pain, causalgia, algoneurodystrophic pain, psychosomatic and idiopathic pain. Since these syndromes and causes of pain could not be discussed individually, they have been grouped according to their neurophysiology and pathophysiology.
Laudo Pardos, C; Puigdevall Gallego, V; del Río Mayor, M J; Velasco Martín, A
The main indication of thyroid hormone preparations is the treatment of hypothyroidism, ideally the goal of therapy is to restore the serum thyrotropin (TSH) concentration to a normal value. The optimal doses used to be stable, but several conditions may alter their requirements (reduced intestinal absorption, pregnancy,...). Levothyroxine therapy is also used in the benign nodular disease and after surgery in patients with thyroid cancer. The overtreatment with thyroxine and the problems related to bone mineral density seems of special importance.
Noureldine, Salem I; Tufano, Ralph P
The association of Hashimoto's thyroiditis and thyroid cancer remains an active focus of research and controversy. Since it was first proposed in 1955, numerous studies have explored the epidemiology and etiology of these concurrent disease processes. The lymphocytic infiltration of Hashimoto's thyroiditis is frequently encountered in thyroid glands resected for a neoplasm. The most frequent association is noted with papillary thyroid cancer. Several recent studies performed on patients undergoing thyroidectomy with coexisting Hashimoto's thyroiditis report an increased prevalence of papillary thyroid cancer, with a favorable disease profile and an improved prognosis, particularly in women. Conversely, some population-based studies using fine-needle aspiration biopsy data report no linkage between serologic Hashimoto's thyroiditis and thyroid cancer, yet they are limited by the lack of definitive pathology. On the other hand, the significantly increased incidence of primary thyroid lymphomas in patients with Hashimoto's thyroiditis strongly suggests a pathogenetic link between this autoimmune disorder and malignant thyroid lymphoma. The lymphocytic infiltration of Hashimoto's thyroiditis is frequently associated with papillary thyroid cancer and may indeed be a risk factor for developing this type of cancer. Nonetheless, a pathogenesis linking these diseases remains unclear. The relationship between thyroid lymphoma and Hashimoto's thyroiditis appears to be well established.
Min, T; Benjamin, S; Cozma, L
Thyroid storm is a rare but potentially life-threatening complication of hyperthyroidism. Early recognition and prompt treatment are essential. Atrial fibrillation can occur in up to 40% of patients with thyroid storm. Studies have shown that hyperthyroidism increases the risk of thromboembolic events. There is no consensus with regard to the initiation of anticoagulation for atrial fibrillation in severe thyrotoxicosis. Anticoagulation is not routinely initiated if the risk is low on a CHADS2 score; however, this should be considered in patients with thyroid storm or severe thyrotoxicosis with impending storm irrespective of the CHADS2 risk, as it appears to increase the risk of thromboembolic episodes. Herein, we describe a case of thyroid storm complicated by massive pulmonary embolism. Diagnosis of thyroid storm is based on clinical findings. Early recognition and prompt treatment could lead to a favourable outcome.Hypercoagulable state is a recognised complication of thyrotoxicosis.Atrial fibrillation is strongly associated with hyperthyroidism and thyroid storm.Anticoagulation should be considered for patients with severe thyrotoxicosis and atrial fibrillation irrespective of the CHADS2 score.Patients with severe thyrotoxicosis and clinical evidence of thrombosis should be immediately anticoagulated until hyperthyroidism is under control.
Wiyanto, Joko; Kartamihardja, Achmad Hussein Sundawa; Nugrahadi, Trias
Thyroid nodule is one of the most common endocrine diseases in the world; it occurs in 4–7% of the general population. Depending on the method of discovery, 4–8% nodules are discovered using palpation, 10–41% with ultrasound (US), and 50% through autopsy where only 20% or less of cold thyroid nodules are caused by cancerous lesions. The aim of this study was to assess US as supporting modality for thyroid scintigraphy to predict malignancy in patient with thyroid cold nodules. In a retrospective study between 2009 and 2013, we analyzed 399 subjects with cold thyroid nodule, where 39 subjects (36 women and 3 men) presented with malignant thyroid cold nodule and 19 subjects underwent US. The US showed malignancy parameters in 8 (42.11%) subjects, while the rest of the 11 (57.89%) subject were benign. Out of all the subjects who underwent US in this study, only 8 (42.11%) subjects shown malignancy characteristics in cold thyroid nodule with papillary thyroid cancer (PTC). That means US parameters of malignant thyroid nodule do not always show up in malignant cold thyroid nodule. PMID:27651738
There is mounting evidence that the serum concentration of TSH is an independent predictor for the diagnosis of thyroid malignancy in patients with nodular thyroid disease. Furthermore, preoperative serum TSH concentrations are higher in patients with more aggressive tumours, suggesting a potential role for TSH in the progression of differentiated thyroid cancer. Based on these observations, patients with higher serum TSH concentrations and borderline cytological results may require more aggressive investigation and treatment when compared with those with lower baseline TSH levels. The mechanisms underlying the finding of higher serum TSH in patients with thyroid cancer remain unexplained. In this issue of Endocrine-Related Cancer, Fiore et al. have analysed the relationship between serum TSH and diagnosis of papillary thyroid cancer in 10 178 patients with nodular thyroid disease who were investigated by fine-needle aspiration biopsy. They found significantly higher TSH concentrations in patients who were subsequently diagnosed with thyroid cancer compared with those with benign disease. In addition, they found that the development of autonomous thyroid function (TSH<0.4 muU/ml) was associated with a reduction in the risk of papillary thyroid carcinoma. In this commentary, the evidence regarding the association between serum TSH and thyroid cancer is discussed placing these new findings into context.
Ruchala, Marek; Skiba, Agnieszka; Gurgul, Edyta; Uruski, Pawel; Wasko, Ryszard; Sowinski, Jerzy
The high prevalence of goiter in acromegalic patients is well known. Several studies revealed increased frequency of thyroid carcinoma in these patients. The aim of the study was to evaluate the incidence of thyroid lesions, including thyroid cancer in acromegalic patients and to estimate possible factors influencing their occurrence, especially high IGF-1 level. 86 consecutive patients with acromegaly were retrospectively analyzed. 45 patients had been previously treated for acromegaly and 41 were newly diagnosed. In all subjects hGH, IGF-1, TSH, FT4 levels were determined. Thyroid gland was evaluated in ultrasound examination. Fine needle aspiration biopsy (FNAB) was performed in every solid or mixed thyroid nodule. Thyroid morphology abnormalities were found in 75 patients (87.2%). 10 patients (11.6%) had diffuse goiter and 65 patients (75.6%) had nodular goiter. There were 5 cases of thyroid carcinoma (5.8%): 3 papillary carcinomas and two follicular variants of papillary cancer. Out of five cancers three were multifocal, one infiltrated thyroid capsule and one was diagnosed at the stage of metastases to four lymph nodes. Our study confirmed common co-existence of acromegaly and thyroid lesions. Furthermore, it revealed considerably high occurrence of thyroid carcinoma in these patients. In view of this correlation, the potential role of IGF-1 in pathogenesis of benign and malignant thyroid neoplasms should be considered. Due to high frequency of thyroid cancer in acromegalic patients, we suggest to perform fine needle aspiration biopsy in each case of thyroid nodule.
Eloy, J A; Brett, E M; Fatterpekar, G M; Kostakoglu, L; Som, P M; Desai, S C; Genden, E M
Incidental positron-emission tomography (PET) uptake in the thyroid bed represents a diagnostic dilemma. Currently, there is no consensus regarding the significance of this finding or the most appropriate approach to management. The purpose of this study was to determine the significance of incidental fluorodeoxyglucose (FDG) uptake in the thyroid gland on [(18)F]FDG-positron-emission tomography (FDG-PET/CT) in patients being initially staged for lymphomas and/or cancers other than of thyroid origin. A retrospective review was conducted on patients who were incidentally found to have focal FDG uptake in the thyroid bed on initial staging for cancer. Patient records were assessed for age, sex, clinical presentation, standard uptake values (SUV(max)), on FDG-PET/CT, and CT findings in those patients undergoing FDG-PET/CT, fine-needle aspiration (FNA) cytology, and surgical pathologic examination. Thirty patients were identified with incidental FDG-PET uptake in the thyroid bed from 630 studies performed for evaluation of cancer between March 2004 and June 2006. Complete records were available for 18 patients (6 men, 12 women). Five (27.8%) of 18 patients with incidental focal FDG-PET/CT uptake in the thyroid gland demonstrated papillary thyroid carcinoma on final pathologic findings. The mean and SD of SUV(max) was 3.0 +/- 1.8 (range, 1.1-7.4) overall, 2.9 +/- 1.6 (range, 1.1-6.8) in the patients without malignant growth, and 3.4 +/- 2.6 (range, 1.1-7.4) in the 5 patients with papillary thyroid carcinoma. No statistical difference in SUV(max) was noted between patients with papillary thyroid carcinoma and patients with benign pathologic findings (P = .63). Incidental FDG-PET uptake in the thyroid gland in patients with cancer of nonthyroidal origin is associated with a 27.8% risk for well-differentiated thyroid carcinoma; however, there seems to be no correlation between intensity of FDG uptake and the risk for a malignant process.
Rizzo, Leonardo F L; Mana, Daniela L; Bruno, Oscar D
The term thyroiditis comprises a group of thyroid diseases characterized by the presence of inflammation, including autoimmune and non-autoimmune entities. It may manifest as an acute illness with severe thyroid pain (subacute thyroiditis and infectious thyroiditis), and conditions in which the inflammation is not clinically evident evolving without pain and presenting primarily thyroid dysfunction and/or goiter (drug-induced thyroiditis and Riedel thyroiditis). The aim of this review is to provide an updated approach on non-autoimmune thyroiditis and its clinical, diagnostic and therapeutic aspects.
Zahid, Muhammad; Goldner, Whitney; Beseler, Cheryl L; Rogan, Eleanor G; Cavalieri, Ercole L
Well-differentiated thyroid cancer most frequently occurs in premenopausal women. Greater exposure to estrogens may be a risk factor for thyroid cancer. To investigate the role of estrogens in thyroid cancer, a spot urine sample was obtained from 40 women with thyroid cancer and 40 age-matched controls. Thirty-eight estrogen metabolites, conjugates and DNA adducts were analyzed by using ultraperformance liquid chromatography/tandem mass spectrometry and the ratio of adducts to metabolites and conjugates was calculated for each sample. The ratio of depurinating estrogen-DNA adducts to estrogen metabolites and conjugates significantly differed between cases and controls (p < 0.0001), demonstrating high specificity and sensitivity. These findings indicate that estrogen metabolism is unbalanced in thyroid cancer and suggest that formation of estrogen-DNA adducts might play a role in the initiation of thyroid cancer. Copyright © 2013 UICC.
Zane, Mariangela; Catalano, Veronica; Scavo, Emanuela; Bonanno, Marco; Pelizzo, Maria Rosa; Todaro, Matilde; Stassi, Giorgio
Recent discoveries highlight the emerging role of estrogens in the initiation and progression of different malignancies through their interaction with stem cell (SC) compartment. Estrogens play a relevant role especially for those tumors bearing a gender disparity in incidence and aggressiveness, as occurs for most thyroid diseases. Although several experimental lines suggest that estrogens promote thyroid cell proliferation and invasion, their precise contribution in SC compartment still remains unclear. This review underlines the interplay between hormones and thyroid function, which could help to complete the puzzle of gender discrepancy in thyroid malignancies. Defining the association between estrogen receptors’ status and signaling pathways by which estrogens exert their effects on thyroid cells is a potential tool that provides important insights in pathogenetic mechanisms of thyroid tumors. PMID:25120531
Zahid, Muhammad; Goldner, Whitney; Beseler, Cheryl L.; Rogan, Eleanor G.; Cavalieri, Ercole L.
Well-differentiated thyroid cancer most frequently occurs in premenopausal women. Greater exposure to estrogens may be a risk factor for thyroid cancer. To investigate the role of estrogens in thyroid cancer, a spot urine sample was obtained from 40 women with thyroid cancer and 40 age-matched controls. Thirty-eight estrogen metabolites, conjugates and DNA adducts were analyzed by using ultraperformance liquid chromatography/tandem mass spectrometry, and the ratio of adducts to metabolites and conjugates was calculated for each sample. The ratio of depurinating estrogen-DNA adducts to estrogen metabolites and conjugates significantly differed between cases and controls (p<0.0001), demonstrating high specificity and sensitivity. These findings indicate that estrogen metabolism is unbalanced in thyroid cancer and suggest that formation of estrogen-DNA adducts might play a role in the initiation of thyroid cancer. PMID:23686454
Uzüm, Nüket; Ozçay, Necdet; Ataoğlu, Omür
Benign multicystic peritoneal mesothelioma is a rare tumor that occurs mainly in women in their reproductive age. It is characterized by the formation of multiple, thin-walled, multilocular cysts that frequently produce large, intra-abdominal masses. The short follow-ups and possible etiologies based on the published reports make it difficult to draw any firm conclusions.
Karaoglu, Aziz; Aydin, Suleyman; Dagli, Adile F; Cummings, David E; Ozercan, Ibrahim H; Canatan, Halit; Ozkan, Yusuf
Ghrelin and obestatin are two peptide hormones with opposing roles in the control of appetite: orexigenic and anorexigenic, respectively. Loss of appetite is a common, serious complication of many forms of malignancy. The goals of this study were to investigate: (i) whether there are differences in ghrelin and obestatin peptide expression in thyroid tissues from a series of papillary carcinoma cases and normal controls, and (ii) whether there are correlations between tissue ghrelin and obestatin levels in series of papillary carcinoma cases and normal controls. Immunohistochemical analysis showed that in sections of benign human thyroid tissue, anti-ghrelin antibody reacted with intense staining in colloid-filled follicles. In benign thyroid tissues, colloids displayed plentiful dispersion in comparison with papillary microcarcinomas, whereas colloids in malignant thyroid tissues were uncommon. We found markedly lower tissue ghrelin levels in thyroid tissue of patients with papillary carcinomas, compared with normal thyroid tissues (P = 0.001). Immunohistochemical analysis also showed that obestatin in papillary carcinoma stained positively to various degrees. Obestatin tissue levels in papillary carcinomas tended to be slightly higher than those in normal thyroid tissue, but this was not statistically significant (P = 0.29). We also report that thyroid tissue of patients with Hashimoto's thyroiditis produced ghrelin and obestatin at similar levels as in normal thyroid tissue, even though colloid in Hashimoto's disease is scarce. We conclude that depressed expression of ghrelin, but not obestatin, is specific to papillary carcinoma, and this difference might constitute a diagnostic tool to differentiate papillary carcinoma from normal thyroid tissue. We currently do not know how these peptides are regulated and what factors are involved in papillary carcinoma, which inhibit the expression of ghrelin but not obestatin. This issue warrants further studies.
Zhao, Pengxin; Zhang, Kaili
Vascular adhesion protein-1 (VAP-1) is a glycoprotein that mediates tissue-selective lymphocyte adhesion. The prognostic value of VAP-1 has been determined in gastric cancer. The aim of this study was to evaluate the changes and the predictive value of serum VAP-1 in patients with thyroid cancer. A total of 126 patients with thyroid nodules and 53 healthy controls participated in this study. The patients were further divided into subgroup 1 (69 cases with benign thyroid nodules) and subgroup 2 (57 cases with thyroid cancer). Serum VAP-1 was measured by time-resolved immunofluorometric assay. Diagnostic value of presurgical VAP-1 for thyroid cancer was conducted by receiver operating characteristic (ROC) curves. Serum levels of VAP-1 were significantly lower in thyroid cancer group than in healthy control and benign thyroid nodule groups. VAP-1 concentrations negatively correlated with serum thyroglobulin (Tg) levels in thyroid cancer patients (r = −0.81; p < 0.001). The optimum cut-off value of VAP-1 was 456.6 ng/mL with a 77.4% specificity and 66.7% sensitivity for thyroid cancer diagnosis. Serum VAP-1 decreased in thyroid cancer patients and VAP-1 could be a potential useful adjunct biomarker in the diagnosis of thyroid cancer. PMID:27446209
Casadei, Gian Piero; Bertarelli, Claudia; Giorgini, Eleonora; Cremonini, Nadia; de Biase, Dario; Tallini, Giovanni
Foci of ectopic thyroid tissue are uncommon. Most sites of thyroid ectopia are confined to the neck region. The presence of ectopic thyroid tissue outside the migration pathway of the primitive thyroid in other locations is exceptional. Given that any disease of the thyroid gland may also affect ectopic thyroid tissue, pathologists has to recognize benign or malignant conditions that may develop in the ectopic focus. We present the case of a 32-year-old woman with ectopic thyroid parenchyma in the adrenal gland. Clinically, postoperative thyroid ultrasound echography and computed tomography scans did not reveal any thyroid tumor. The ectopic tissue was a cyst bordered by mature follicular thyroid structures and was histologically benign, without the molecular alterations associated with malignant tumors of follicular cell derivation (BRAFV600E, N-RAS, H-RAS, K-RAS). Review of the literature reveals that adrenal ectopic thyroid tissue is nearly always cystic and has distinctive pathologic features. © The Author(s) 2014.
Fu, Qiaomei; Wu, Pengxi; Ding, Yan
To screen out the sonogram features for the differential diagnosis of benign and malignant thyroid small nodules (≤ 1.0 cm) by Logistics regression analysis, to establish the binary Logistic regression model of sonogram features as independent variable and investigate the value of wall configuration of ultrasonogrophic nodules in the differential diagnosis of benign and malignant thyroid small nodules. A total of 208 thyroid nodules ≤ 1.0 cm in diameter in 190 patients were evaluated. With postoperative pathological examination or fine needle aspiration biopsy, 106 nodules were confirmed as benign and 102 as malignant. Ultrasonic features of thyroid nodules were evaluated for the differential diagnosis of benign and malignant small thyroid nodules based on pathological diagnosis as a gold standard, a Logistic model was obtained, and the odds ratio of variables were compared. The margin of thyroid nodule was divided into regular or irregular margin, and the latter was divided further into four subtypes: strip, triangular, antler and papillary. The border was divided into clear, fuzzy or both. The periphery was divided into those with normal and abnormal echo;. The calcification included no calcification, microcalcification and non-microcalcification. Four statistically significant features were obtained finally by Logistics regression analysis, including margin, border, periphery and calcification. A formula was constructed by two-variables logistic regression analysis and probability of malignancy = 1/(1 + e - z), in which z = 5.026 × margin + 4.218 × border + 4.024 × periphery + 3.892 × calcification - 15.247. The odds ratio of margin was higher than the other independent variables. Logistics regression analysis indicates that the calcification, border, periphery, and especially margin of thyroid nodules are significant features for differentiating benign and malignant thyroid nodules. The margin score was more intuitionistic for the differentialtion of
Imaizumi, Misa; Usa, Toshiro; Tominaga, Tan; Neriishi, Kazuo; Akahoshi, Masazumi; Nakashima, Eiji; Ashizawa, Kiyoto; Hida, Ayumi; Soda, Midori; Fujiwara, Saeko; Yamada, Michiko; Ejima, Eri; Yokoyama, Naokata; Okubo, Masamichi; Sugino, Keizo; Suzuki, Gen; Maeda, Renju; Nagataki, Shigenobu; Eguchi, Katsumi
Effects of irradiation on thyroid diseases such as thyroid nodules and autoimmune thyroid diseases have not been evaluated among people exposed to radiation more than 50 years in the past. To evaluate the prevalence of thyroid diseases and their radiation-dose responses in atomic bomb survivors. Survey study comprising 4091 cohort members (mean age, 70 [SD, 9] years; 1352 men and 2739 women) who participated in the thyroid study at the Radiation Effects Research Foundation. Thyroid examinations were conducted between March 2000 and February 2003. Prevalence of thyroid diseases, including thyroid nodules (malignant and benign) and autoimmune thyroid diseases, and the dose-response relationship of atomic bomb radiation in each thyroid disease. Thyroid diseases were identified in 1833 (44.8%) of the total participants (436 men [32.2% of men] and 1397 women [51.0% of women]) (P<.001). In 3185 participants, excluding persons exposed in utero, not in the city at the time of the atomic bombings, or with unknown radiation dose, the prevalence of all solid nodules, malignant tumors, benign nodules, and cysts was 14.6%, 2.2%, 4.9%, and 7.7%, respectively. The prevalence of positive thyroid antibodies, antithyroid antibody-positive hypothyroidism, and Graves disease was 28.2%, 3.2%, and 1.2%, respectively. A significant linear dose-response relationship was observed for the prevalence of all solid nodules, malignant tumors, benign nodules, and cysts (P<.001). We estimate that about 28% of all solid nodules, 37% of malignant tumors, 31% of benign nodules, and 25% of cysts are associated with radiation exposure at a mean and median thyroid radiation dose of 0.449 Sv and 0.087 Sv, respectively. No significant dose-response relationship was observed for positive antithyroid antibodies (P = .20), antithyroid antibody-positive hypothyroidism (P = .92), or Graves disease (P = .10). A significant linear radiation dose response for thyroid nodules, including malignant tumors and
... and Treatment? Thyroid Cancer About Thyroid Cancer Key Statistics for Thyroid Cancer How common is thyroid cancer? ... remains very low compared with most other cancers. Statistics on survival rates for thyroid cancer are discussed ...
... Rated Nonprofit! Volunteer. Donate. Review. Benign Paroxysmal Positional Vertigo (BPPV) BPPV is the most common vestibular disorder. Benign Paroxysmal Positional Vertigo (or BPPV) is the most common cause of ...
Volkan-Salancı, Bilge; Özgen Kıratlı, Pınar
Both benign and malignant diseases of the thyroid are rare in the pediatric and adolescent population, except congenital hypothyroidism. Nuclear medicine plays a major role, both in the diagnosis and therapy of thyroid pathologies. Use of radioactivity in pediatric population is strictly controlled due to possible side effects such as secondary cancers; therefore, management of pediatric patients requires detailed literature knowledge. This article aims to overview current algorithms in the management of thyroid diseases and use of radionuclide therapy in pediatric and adolescent population. PMID:26316469
Gingalewski, Cynthia A; Newman, Kurt D
Thyroid cancer in children is a rare malignancy with unusual biological behavior. It often presents at advanced stages, yet behaves in a benign manner, when compared to its adult counterpart. Surgeons have debated the risks and benefits of aggressive surgical procedures for over a decade. A consensus treatment plan for childhood thyroid cancer has not been achieved, however radical surgical procedures have, in general, fallen out of favor. The best operative and adjuvant strategy for these children can only be determined when a better understanding of the tumor cell biology and genetics of this cancer is known. This review discusses the current controversies in the management of differentiated childhood thyroid malignancy.
Braunschweig, Till; Kaserer, Klaus; Chung, Joon-Yong; Bilke, Sven; Krizman, David; Knezevic, Vladimir; Hewitt, Stephen M
Thyroid cancer is the most common endocrine neoplasm with multiple histologic subtypes, each associated with different treatments and outcomes. Differentiating benign neoplasms such as follicular adenomas from malignant entities such as follicular carcinomas and papillary carcinoma can be challenging. To define the proteomic profile of different thyroid tumors, we screened an antibody array of 330 features against five thyroid neoplasms: follicular adenoma, follicular carcinoma, papillary carcinoma, anaplastic carcinoma, and medullary carcinoma as well as normal thyroid epithelium. Eight candidate biomarkers; c-erbB-2, Stat5a, Annexin IV, IL-11, RARα, FGF7, Caspase 9, and phospho-c-myc were identified as differentially expressed on the antibody array, and validated with immunohistochemistry on tissue microarrays, with a total of 144 samples of the same variety of thyroid neoplasms. Analysis revealed c-erbB-2, Annexin IV, and Stat5a have potential clinical utility to differentiate follicular adenoma, follicular carcinoma, and papillary carcinoma from each other. By using an antibody array as a discovery platform and a tissue microarray as a first step in validation on a large number of specimens, we have identified new markers that have potential utility in the diagnosis of thyroid neoplasms. Copyright © 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Smallridge, R C
To review the diagnosis and management of thyroid diseases, both metabolic (thyroid storm and myxedema coma) and anatomic (substernal goiter, lymphoma, anaplastic carcinoma) that may require intensive care therapy. English-language articles were identified through a search of the MEDLINE and Index Medicus databases. Bibliographies of retrieved articles were examined for relevant articles. Approximately 250 articles were reviewed. Those articles deemed most representative were utilized. Case reports were included to highlight rare, but potentially lethal complications. All data were analyzed by one observer. Limitations of the data are discussed. Guidelines for determining the etiology of thyrotoxic crisis are outlined. Criteria for distinguishing critically ill hypothyroid patients from those patients with the euthyroid sick syndrome are given. Therapy for both disorders must be aggressive and multifaceted, and detailed management is indicated. Substernal goiter is almost always benign, but may cause various acute complications, including dyspnea, respiratory failure, superior vena caval syndrome, esophageal varices (downhill), and others. Surgery almost always corrects the problem. Lymphomas present with rapid thyroid enlargement. Recent studies suggest that surgery may assume more of a supportive role, used principally to obtain adequate tissue for histologic classification. Thyroid disorders can produce emergencies requiring the attention of multiple medical and surgical specialists. While management is often successful, future studies should address the following three areas: a) optimization of thyroid hormone dose for treatment of myxedema coma; b) clarification of the role of radiotherapy and/or chemotherapy for thyroid lymphoma; and c) more effective therapy for anaplastic carcinoma.
Friedman, M.; Toriumi, D.M.; Mafee, M.F.
With the refinement of fine-needle aspiration, the specific applications of thyroid imaging techniques need to be reevaluated for efficiency and cost containment. No thyroid imaging test should be routinely obtained. Radionuclide scanning is most beneficial in evaluating the functional status of thyroid nodules when fine-needle aspiration is inadequate, the findings are benign, or when there is no discrete nodule that is palpated in an enlarged gland. When fine-needle aspiration is unavailable or unreliable, radionuclide scanning becomes a first-line diagnostic tool. Ultrasonography should be used primarily for identifying a solid component of a cystic nodule, determining the size of nodules on thyroxine suppression that are not easily palpable, or for performing guided fine-needle aspiration. Computerized tomography and magnetic resonance imaging both have a definite role in the evaluation of thyroid tumors. Magnetic resonance imaging is superior to computerized tomography for the evaluation of metastatic, retrotracheal, or mediastinal involvement of large thyroid tumors or goiters. Careful selection of the diagnostic techniques will ensure more accurate diagnosis and reduce unnecessary patient costs in the treatment of thyroid cancer.
Xu, Shuhang; Chen, Guofang; Peng, Wen; Renko, Kostja; Derwahl, Michael
Benign and malignant thyroid nodules are more prevalent in females than in males. Experimental data suggest that the proliferative effect of oestrogen rather than polymorphisms is responsible for this gender difference. This study analysed whether both differentiated thyroid cells and thyroid stem and progenitor cells are targets of oestrogen action. In thyroid stem/progenitor cells derived from nodular goitres, the ability of 17β-oestradiol (E₂) to induce the formation of thyrospheres and the expression of oestrogen receptors (ERs) and the effect of E₂ on the growth and expression of markers of stem cells and thyroid differentiation (TSH receptor, thyroperoxidase, thyroglobulin and sodium iodide symporter (NIS)) were analysed. E₂ induced thyrosphere formation, albeit to a lower extent than other growth factors. Thyroid stem and progenitor cells expressed ERα (ESR1) and ERβ (ESR2) with eight times higher expression levels of ERα mRNA compared with the differentiated thyrocytes. E₂ was a potent stimulator of the growth of thyroid stem/progenitor cells. In contrast, TSH-induced differentiation of progenitor cells, in particular, the expression of NIS, was significantly inhibited by E₂. In conclusion, oestrogen stimulated the growth and simultaneously inhibited the differentiation of thyroid nodule-derived stem/progenitor cells. From these data and based on the concept of cellular heterogeneity, we hypothesize a supportive role of oestrogen in the propagation of thyroid stem/progenitor cells leading to the selection of a progeny of growth-prone cells with a decreased differentiation. These cells may be the origin of hypofunctioning or non-functioning thyroid nodules in females.
... to determine thyroid function include: Free T4 test Serum TSH T3 Thyroid autoantibodies Imaging studies and fine needle biopsy are generally not needed to diagnose Hashimoto thyroiditis. This disease may also change the results of the following ...
... are common. These nodules can be either a growth of thyroid tissue or a fluid-filled cyst, which forms a lump in the thyroid gland. Almost half of the population will have tiny thyroid nodules at some point ...
Silbert, P L; Edis, R H; Stewart-Wynne, E G; Gubbay, S S
There is a definite relationship between the vascular type of benign sexual headache and benign exertional headache. Forty five patients with benign vascular sexual headache were reviewed. Twenty seven (60%) experienced benign vascular sexual headache alone and eighteen (40%) had experienced both benign vascular sexual headache and benign exertional headache on at least one occasion. The mean age was 34.3 years with a male:female ratio of 5.4:1. Thirty patients with a history of benign vascular sexual headache were followed for an average of 74 months. A personal history of migraine was found in 47% of cases and a family history of migraine in 30%. Forty one per cent of patients with benign vascular sexual headache alone had recurrences after diagnosis, and stress and fatigue were considered major contributing factors to the initial and recurrent headache. Nine patients had experienced benign vascular sexual headache and benign exertional headache within 72 hours of each other on at least one occasion, often with a residual headache between the two. Four patients experienced their benign vascular sexual headache and benign exertional headache separated by months to years. The prognosis of benign vascular sexual headache and the clinical and possible pathophysiological relationships between benign vascular sexual headache and benign exertional headache are discussed. Knowledge of the interrelationships of these varieties of headache is valuable in the counselling of patients. PMID:1865204
Raphael, S; Mohammed, A Z; Iliyasu, Y
Thyroid gland neoplasms occur globally with geographical variation in incidence and histopathological pattern related to age, sex, dietary and environmental factors. There is, however, no published histological study from northwestern Nigeria; hence, the need for this retrospective study to document the pattern in Kano. This was a retrospective study of all histologically diagnosed thyroid neoplasms in the Department of Pathology, Aminu Kano Teaching Hospital (AKTH), Kano Nigeria, over a ten year period from 1st January, 2002 to 31st December, 2011. A total of 522 thyroid specimens (1.5% of all biopsies) were received over the ten year period. Thyroid neoplasms accounted for 157 (30.1%) of all the thyroid specimens, comprising 130 females (82.8%) and 27 males (17.2%) with female to male ratio of 4.8:1. The ages range from 15 to 80 years with a mean age of 35.8 years and peak occurrence in the 4th decade. There were 82 cases (52.2%) of thyroid adenoma (mostly follicular) while thyroid carcinoma accounted for 66 cases (42%). Papillary carcinoma predominated (53%) followed by follicular carcinoma (33.3%) and medullary carcinoma (9.1%). One case each (1.5%) of anaplastic carcinoma, squamous cell carcinoma and metastatic squamous cell carcinoma were seen. All the malignant tumours were epithelial and all except one were primary thyroid malignancy. Thyroid neoplasmis a common thyroid gland lesion in Kano with a striking female preponderance. Thyroid adenoma was the most common benign neoplasm while papillary carcinoma seen a decade earlier in females was the most common malignant thyroid neoplasm. The predominance of papillary carcinoma over follicular carcinoma is a reverse of the finding of an earlier clinicopatholgical study on thyroid gland diseases in Kano.
Leboulleux, Sophie; Baudin, Eric; Travagli, Jean-Paul; Schlumberger, Martin
Medullary thyroid carcinoma (MTC) arises from parafollicular or C cells that produce calcitonin (CT), and accounts for 5-10% of all thyroid cancers. MTC is hereditary in about 25% of cases. The discovery of a MTC in a patient has several implications: disease extent should be evaluated, phaeochromocytoma and hyperparathyroidism should be screened for and whether the MTC is sporadic or hereditary should be determined by a direct analysis of the RET proto-oncogene. In this review, pathological characteristics, tumour markers and genetic abnormalities in MTC are discussed. The diagnostic and therapeutic modalities applied to patients with clinical MTC and those identified with preclinical disease through familial screening are also described. Progresses concerning genetics, initial treatment, follow-up, screening and treatment of pheochromocytoma have permitted an improvement in the long-term outcome. However, there is no effective treatment for distant metastases, and new therapeutic modalities are urgently needed.
Panebianco, Federica; Tantillo, Elena; La Ferla, Marco; Menicagli, Michele; Aretini, Paolo; Apollo, Alessandro; Naccarato, Antonio Giuseppe; Marchetti, Ivo; Mazzanti, Chiara Maria
Papillary thyroid carcinoma is the most frequent histologic type of thyroid tumor. Few studies investigated the role of c-KIT expression in thyroid tumors, suggesting a role for this receptor and its ligand in differentiation and growth control of thyroid epithelium and a receptor loss following malignant transformation. We investigated and correlated c-KIT expression levels and two known markers of thyrocytes differentiation, PAX8 and TTF-1, in malignant and benign cytological thyroid samples. Moreover, we performed functional studies on human papillary thyroid carcinoma cell line to associated c-KIT expression to thyrocytes differentiation and tumor proliferation. c-KIT and PAX8 expression resulted higher in benign samples compared to the malignant ones, and the expression levels of these two genes were significantly correlated to each other. We also observed that c-KIT overexpression led to an increase of PAX8 expression level together with a decrease of proliferation. Furthermore, c-KIT overexpressing cells showed a regression of typical morphological features of malignancy. Taken together these results suggest that c-KIT could be involved in the differentiation of thyroid cells and in tumor progression. PMID:28301608
Franceschi, Sara; Lessi, Francesca; Panebianco, Federica; Tantillo, Elena; La Ferla, Marco; Menicagli, Michele; Aretini, Paolo; Apollo, Alessandro; Naccarato, Antonio Giuseppe; Marchetti, Ivo; Mazzanti, Chiara Maria
Papillary thyroid carcinoma is the most frequent histologic type of thyroid tumor. Few studies investigated the role of c-KIT expression in thyroid tumors, suggesting a role for this receptor and its ligand in differentiation and growth control of thyroid epithelium and a receptor loss following malignant transformation. We investigated and correlated c-KIT expression levels and two known markers of thyrocytes differentiation, PAX8 and TTF-1, in malignant and benign cytological thyroid samples. Moreover, we performed functional studies on human papillary thyroid carcinoma cell line to associated c-KIT expression to thyrocytes differentiation and tumor proliferation. c-KIT and PAX8 expression resulted higher in benign samples compared to the malignant ones, and the expression levels of these two genes were significantly correlated to each other. We also observed that c-KIT overexpression led to an increase of PAX8 expression level together with a decrease of proliferation. Furthermore, c-KIT overexpressing cells showed a regression of typical morphological features of malignancy. Taken together these results suggest that c-KIT could be involved in the differentiation of thyroid cells and in tumor progression.
Azad, Reza Mansourian
Laboratory findings can definitely help the patients not to enter into status, where the damage might be happen due to a miss-diagnosis based on clinical assessment alone. The secondary disease accompanied with thyroid patients should also carefully check out due to the interference which some diseases can cause in the amount of serum thyroid hormone, particularly the free thyroxin. The dilemma over thyroid clinical diagnosis occur due to variation on serum thyroid hormone which initiated by other non-thyroidal disorders which can play an important roles in metabolic disorders of thyroid hormone due to the alteration which occur on the serum level of thyroid hormone transporter proteins. The majority of serum thyroid hormones of up to 95-99% are bound to the carrier proteins mainly to Thyroxin-Binding Globulins (TBG), some transthyretin already known as pre-albumin and albumin which are all synthesis in the liver and any modification which alter their production may alter the status of thyroid hormones. It seems TBG, transthyretin and albumin carries 75, 20, 5% of thyroid hormones within blood circulation, respectively. The dilemma facing the thyroid hormones following disruption of thyroid hormone transporter protein synthesis originate from this fact that any alteration of these protein contribute to the alteration of total thyroid and free serum thyroid hormones which are in fact the biologically active form of thyroid hormones. The subsequent of latter implication result in miss-understanding and miss-diagnosis of thyroid function tests, with possible wrongly thyroid clinical care, followed by undesired therapy of otherwise healthy thyroid.
Thyroid nodules are an extremely common endocrine disorder with a generally accepted prevalence of around 4% to 7%. Incidental thyroid nodules are typically nonpalpable thyroid nodules found during radiographic evaluation for a non-thyroid-related issue (eg, computed tomographic scan, positron emission tomography scan, carotid duplex). Incidental thyroid nodules are contributing to but are not the sole reason for the rising incidence of thyroid cancer in the Unites States and other developed nations.
Martínez Gamarra, C; Bernabéu Taboada, D; Pozo Kreilinger, J J; Tapia Viñé, M
Benign notochordal cell tumors (TBCN) are lesions with notochordal differentiation which affect the axial skeleton. They are characterized by asymptomatic or non-specific symptomatology and are radiologically unnoticed because of their small size, or because they are mistaken with other benign bone lesions, such as vertebral hemangiomas. When they are large, or symptomatic, can be differential diagnosis with metastases, primary bone tumors and chordomas. We present a case of a TBCN in a 50-year-old woman, with a sacral lesion seen in MRI. A CT-guided biopsy was scheduled to analyze the lesion, finding that the tumor was not clearly recognizable on CT, so the anatomical references of MRI were used to select the appropriate plane. The planning of the approach and the radio-pathological correlation were determinant to reach the definitive diagnosis. Copyright © 2017 SERAM. Publicado por Elsevier España, S.L.U. All rights reserved.
Soria-Fernández, Guillermo René; Jungfermann-Guzman, José René; Lomelín-Ramos, José Pedro; Jaspersen-Gastelum, Jorge; Rosas-Nava, Jesús Emmanuel
the term prostatic hyperplasia is most frequently used to describe the benign prostatic growth, this being a widely prevalent disorder associated with age that affects most men as they age. The association between prostate growth and urinary obstruction in older adults is well documented. large benign prostatic hyperplasia is rare and few cases have been published and should be taken into account during the study of tumors of the pelvic cavity. we report the case of an 81-year-old who had significant symptoms relating to storage and bladder emptying, with no significant elevation of prostate specific antigen. this is a rare condition but it is still important to diagnose and treat as it may be related to severe obstructive uropathy and chronic renal failure. In our institution, cases of large prostatic hyperplasia that are solved by suprapubic adenomectomy are less than 3%.
Ojeda Cuchillero, R M; Sánchez Regaña, M; Umbert Millet, P
Malignant atrophic papulosis is a rare systemic vaso-occlusive disorder characterized by thrombosis of vessels of the dermis, gastrointestinal tract, central nervous system and, occasionally, other organs. Cutaneous lesions consist of erythematous, dome-shaped papules that develop a central area of necrosis to leave a porcelain-like scar. The most accepted theory of pathogenesis is based on endothelial cell damage. There is no effective treatment of the disease. We describe a 26-year-old man with Degos' disease, a diagnosis based on the clinical and histologic pattern of skin lesions. The good response to antiplatelet therapy and the absence of systemic involvement over 8 years' follow-up is noteworthy. We believe that this case represents the benign form of the disease, typically referred to as benign cutaneous Degos' disease.
Gash, A E
The coupling of energetic metallic multilayers (a.k.a. flash metal) with energetic sol-gel synthesis and processing is an entirely new approach to forming energetic devices for several DoD and DOE needs. They are also practical and commercially viable manufacturing techniques. Improved occupational safety and health, performance, reliability, reproducibility, and environmentally acceptable processing can be achieved using these methodologies and materials. The development and fielding of this technology will enhance mission readiness and reduce the costs, environmental risks and the necessity of resolving environmental concerns related to maintaining military readiness while simultaneously enhancing safety and health. Without sacrificing current performance, we will formulate new impact initiated device (IID) compositions to replace materials from the current composition that pose significant environmental, health, and safety problems associated with functions such as synthesis, material receipt, storage, handling, processing into the composition, reaction products from testing, and safe disposal. To do this, we will advance the use of nanocomposite preparation via the use of multilayer flash metal and sol-gel technologies and apply it to new small IIDs. This work will also serve to demonstrate that these technologies and resultant materials are relevant and practical to a variety of energetic needs of DoD and DOE. The goal will be to produce an IID whose composition is acceptable by OSHA, EPA, the Clean Air Act, Clean Water Act, Resource Recovery Act, etc. standards, without sacrificing current performance. The development of environmentally benign stab detonators and igniters will result in the removal of hazardous and toxic components associated with their manufacturing, handling, and use. This will lead to improved worker safety during manufacturing as well as reduced exposure of Service personnel during their storage and or use in operations. The
Pickhard, A; Reiter, R
Benign vocal fold lesions are grouped in lesions arising from the epithelium like papillomas, lesions affecting the Reinke's space (nodules, polyps, cysts, Reinkes's edema as a form of chronic laryngitis) and lesions affecting the arytenoid (granulomas). A multifactorial genesis is assumed. Main symptoms are dysphonia and hyperfunctional vocal behavior that might also be a cause of these lesions. © Georg Thieme Verlag KG Stuttgart · New York.
email@example.com † School of Mechanical Engineering, Purdue University, West Lafayette, Indiana, USA ABSTRACT Pyrotechnic delays are used in...benign formulations are described. The delay time of the new system is easily tunable. These compositions will consistently function in aluminum ...tunable. These compositions will consistently function in aluminum housings which is generally difficult for delay compositions due to extreme thermal
Papadopoulou, Foteini; Efthimiou, Elias
It has been known for 50 years that thyroid exposure to high doses of ionizing radiation in childhood and adolescence induces an appreciable cancer risk. Epidemiological studies in children treated with external radiotherapy for benign or malignant lesions in the head and neck have also shown the induction of thyroid cancer. The World Health Organization (WHO) has reported that the risk for developing thyroid cancer due to the Chernobyl accident is greatest in newborns and children below the age of 5, less in adolescents and negligible in adults. As reported, during the first 15 years after the accident, the increase in thyroid cancer cases in Belarus was 87.8 fold in children, 12.7 fold in adolescents and 4.5 fold in adults more than expected. Papillary thyroid cancer with a relative risk incidence of approximately 80% per se is typical in childhood and adolescence. We refer to the differences between adult and childhood papillary thyroid cancers. Gene mutations in thyroid tumors induced after Chernobyl accident have been studied extensively. The treatment comprises thyroid surgery, suppressive doses of thyroxine and radioiodine. It is noteworthy that the thyroid gland can be protected from the intake of radioactive iodine by oral administration of potassium iodide.
Siraganian, P.A.; Mulvihill, J.J.; Mulivor, R.A.; Miller, R.W. )
Elevated alkaline phosphatase activity in serum suggests bone or liver disease or a neoplasm but can also indicate pregnancy or another benign condition. A family with benign hyperphosphatasemia was studied to elucidate the genetics and enzyme defect. Serum total alkaline phosphatase activity was greater than the population mean in all six family members, and more than 7 SDs above the mean in two of four offspring. Monoclonal antibodies to three alkaline phosphatase isoenzymes, intestinal, placental, and tissue nonspecific demonstrated markedly increased intestinal alkaline phosphatase levels in all family members and significantly elevated liver/bone/kidney activity in the two offspring. Guanidine hydrochloride denaturation of the liver/bone/kidney component showed high alkaline phosphatase activity from liver in both siblings and from bone in one. The mode of inheritance in this family is obscure, but a complex regulation of the products of two different alkaline phosphatase genes seems likely. Steps toward diagnosis are suggested. Early recognition of this benign biochemical abnormality should help to avoid unnecessary diagnostic tests.
Sirota, D.K.; Eden, A.R.; Biller, H.F.
A woman received radiation therapy to the adenoids for benign disease at the age of 10 years and subsequently developed an adenocarcinoma of the middle ear, a parathyroid adenoma, and a papillary carcinoma of the thyroid gland in adulthood. This appears to be the first such case on record. The literature of neoplasia after head and neck irradiation is briefly reviewed.
Liu, Zhao; Jing, Hui; Han, Xue; Shao, Hua; Sun, Yi-Xin; Wang, Qiu-Cheng; Cheng, Wen
To retrospectively evaluate the diagnostic performance of shear wave elastography (SWE) and thyroid imaging reporting and data system (TI-RADS) in differentiating malignant and benign thyroid nodules. A total of 313 thyroid nodules in 227 patients were included. All thyroid nodules were underwent SWE and TI-RADS before fine needle aspiration biopsy and/or surgery. SWE elasticity indices of the maximum (Emax), mean (Emean), minimum (Emin) and elastic ratio (ER) in thyroid nodules were measured. Nodules with solid component, marked hypoechogenicity, poorly defined margins, micro-calcifications, and a taller-than-wide shape were classified as suspicious at gray-scale ultrasonography. The level of TI-RADS was determined according to the number of suspicious ultrasonography features. The combined methods of SWE and TI-RADS in thyroid nodules were calculated. In the 313 nodules, 194 were malignant, and 119 were benign. SWE and TI-RADS were significantly higher in malignant nodules than benign nodules (P < 0.001). The most accurate SWE cut-off value, 51.95 kPa for Emax, achieved a sensitivity of 81.44% and a specificity of 83.19% for discriminating malignant nodules from benign nodules. There are two methods in combination with SWE and TI-RADS. The one is "tandem" method, which has a higher specificity (95.80%), positive likelihood ratio (18.16) and positive predictive value (96.73%). The other one is "parallel" method, which shows sensitivity (94.85%), negative likelihood ratio (0.07) and negative predictive value (90.00%).We believe that the methods could be used as a simple tool to stratify the risk of thyroid nodules accurately.
Agrawal, Kanhaiyalal; Bhattacharya, Anish; Mittal, Bhagwant Rai
Objectives: The study was performed to evaluate the incremental value of single photon emission computed tomography/computed tomography (SPECT/CT) over planar radioiodine imaging before radioiodine ablation in the staging, management and stratification of risk of recurrence (ROR) in differentiated thyroid cancer (DTC) patients. Materials and Methods: Totally, 83 patients (21 male, 62 female) aged 17–75 (mean 39.9) years with DTC were included consecutively in this prospective study. They underwent postthyroidectomy planar and SPECT/CT scans after oral administration of 37–114 MBq iodine-131 (I-131). The scans were interpreted as positive, negative or suspicious for tracer uptake in the thyroid bed, cervical lymph nodes and sites outside the neck. In each case, the findings on planar images were recorded first, without knowledge of SPECT/CT findings. Operative and pathological findings were used for postsurgical tumor–node–metastasis staging. The tumor staging was reassessed after each of these two scans. Results: Single photon emission computed tomography/computed tomography localized radioiodine uptake in the thyroid bed in 9/83 (10.8%) patients, neck nodes in 24/83 (28.9%) patients and distant metastases in 8/83 (9.6%) patients in addition to the planar study. Staging was changed in 8/83 (9.6%), ROR in 11/83 (13.2%) and management in 26/83 (31.3%) patients by the pretherapy SPECT/CT in comparison to planar imaging. SPECT/CT had incremental value in 32/83 patients (38.5%) over the planar scan. Conclusion: Single photon emission computed tomography/computed tomography is feasible during a diagnostic I-131 scan with a low amount of radiotracer. It improved the interpretation of pretherapy I-131 scintigraphy and changed the staging and subsequent patient management. PMID:26170564
Clark, Orlo H.
Patients with thyroid nodules must be treated selectively because these nodules develop far more frequently than does thyroid cancer. A thorough clinical history, family history and history of radiation, as well as an accurate physical examination, are very important in determining whether surgical treatment is indicated. Thyroid function tests, a radioactive isotope scan, a thyroid echogram and fine-needle biopsy are also useful. Although there is considerable debate concerning the amount of thyroid tissue that should be removed at operation, the minimal procedure for a “cold,” solid thyroid nodule is a total thyroid lobectomy and isthmectomy. This is the treatment of choice for patients with occult papillary thyroid carcinoma. Partial lobectomy is to be discouraged. Near total or total thyroidectomy should be considered for all other patients with differentiated thyroid cancer. Many factors influence the prognosis of patients with thyroid cancer including age, sex, type of thyroid cancer, invasion, symptoms, lymph node metastasis, metastasis to distant sites, extent of the surgical procedure, and use of radioactive iodine and thyroid hormone. With adequate treatment, the prognosis for differentiated thyroid carcinoma is excellent. PMID:7222643
Su, J J; Hui, L Z; Xi, C J; Su, G Q
The present study was conducted to analyze the correlation between ultrasonic characteristics, pathological type, and molecular markers of thyroid-tumor-related genes as well as to evaluate the diagnosis and prognosis of thyroid nodules. The acoustic characteristics of 130 thyroid specimens were detected. Pathological sectioning and immunohistochemical detection were performed to determine the correlation between tumor gene expression and ultrasonic characteristics. Ultrasonic testing revealed that malignant nodules were normally accompanied by lymph nodes. Expression of the human telomerase reverse transcriptase, Ki67, vascular endothelial growth factor, Ret, and P53 genes exhibited statistically significant differences in malignant, benign, and normal tissues. The performance of thyroid malignant nodules showed different degrees of correlation with the expression of the human telomerase reverse transcriptase, Ki67, VEGF, Ret, and P53 genes. Color Doppler ultrasound is highly sensitive for thyroid nodules and is therefore effective for identifying thyroid nodules and early diagnosis of thyroid cancer. Color Doppler ultrasound can identify benign or malignant thyroid nodules based on 5 characteristic indicators. Tumor pathology and gene expression are associated with the sonographic features of thyroid cancer. Therefore, determining the pathological basis of ultrasonography would facilitate prognostic assessments of thyroid cancer.
Dasgupta, S; Chakrabarti, S; Mandal, P K; Das, S
Hashimoto's thyroiditis (HT) has been found to be associated with lymphoma, papillary carcinoma and Hürthle cell neoplasms of thyroid. In contrast, there are only a few reports of co-existence of HT with medullary carcinoma of thyroid. An overall prevalence of medullary carcinoma of only 0.35% has been reported in HT patients. Such a rare combination is being presented here. A 33 year old female presented with history of goiter for one year. Fine needle aspiration cytology (FNAC) of the swelling revealed cytological features suggestive of medullary carcinoma of thyroid. Histopathological examination of total thyroidectomy specimen revealed Hashimoto's thyroiditis along with medullary carcinoma of thyroid. Although Hashimoto's thyroiditis can uncommonly co-exist with thyroid neoplasm, its association with medullary carcinoma is extremely rare and hence being presented.
Bernardi, Stella; Stacul, Fulvio; Michelli, Andrea; Giudici, Fabiola; Zuolo, Giulia; de Manzini, Nicolò; Dobrinja, Chiara; Zanconati, Fabrizio; Fabris, Bruno
Radiofrequency ablation has been advocated as an alternative to radioiodine and/or surgery for the treatment of autonomously functioning benign thyroid nodules. However, only a few studies have measured radiofrequency ablation efficacy on autonomously functioning benign thyroid nodules. The aim of this work was to evaluate the 12-month efficacy of a single session of radiofrequency ablation (performed with the moving shot technique) on solitary autonomously functioning benign thyroid nodules. Thirty patients with a single, benign autonomously functioning benign thyroid nodules, who were either unwilling or ineligible to undergo surgery and radioiodine, were treated with radiofrequency ablation between April 2012 and May 2015. All the patients underwent a single radiofrequency ablation, performed with the 18-gauge needle and the moving shot technique. Clinical, laboratory, and ultrasound evaluations were scheduled at baseline, and after 1, 3, 6, and 12 months from the procedure. A single radiofrequency ablation reduced thyroid nodule volume by 51, 63, 69, and 75 % after 1, 3, 6, and 12 months, respectively. This was associated with a significant improvement of local cervical discomfort and cosmetic score. As for thyroid function, 33 % of the patients went into remission after 3 months, 43 % after 6 months, and 50 % after 12 months from the procedure. This study demonstrates that a single radiofrequency ablation allowed us to withdraw anti-thyroid medication in 50 % of the patients, who remained euthyroid afterwards. This study shows that a single radiofrequency ablation was effective in 50 % of patients with autonomously functioning benign thyroid nodules. Patients responded gradually to the treatment. It is possible that longer follow-up studies might show greater response rates.
Hwang, Sena; Shin, Dong Yeob; Kim, Eun Kyung; Yang, Woo Ick; Byun, Jung Woo; Lee, Su Jin; Kim, Gyuri; Im, Soo Jung
Purpose It is often difficult to discriminate focal lymphocytic thyroiditis (FLT) or adenomatous hyperplasia (AH) from thyroid cancer if they both have suspicious ultrasound (US) findings. We aimed to make a predictive model of FLT from papillary thyroid cancer (PTC) in suspicious nodules with benign cytologic results. Materials and Methods We evaluated 214 patients who had undergone fine-needle aspiration biopsy (FNAB) and had shown thyroid nodules with suspicious US features. PTC was confirmed by surgical pathology. FLT and AH were confirmed through more than two separate FNABs. Clinical and biochemical findings, as well as US features, were evaluated. Results Of 214 patients, 100 patients were diagnosed with PTC, 55 patients with FLT, and 59 patients with AH. The proportion of elevated thyrotropin (TSH) levels (p=0.014) and thyroglobulin antibody (Tg-Ab) or thyroid peroxidase antibody (TPO-Ab) positivity (p<0.001) in the FLT group was significantly higher than that in the PTC group. Regarding US features, absence of calcification (p=0.006) and "diffuse thyroid disease" (DTD) pattern on US (p<0.001) were frequently seen in the FLT group. On multivariate analysis, Tg-Ab positivity, presence of a DTD pattern on US, and absence of calcification in nodules were associated with FLT with the best specificity of 99% and positive predictive value of 96%. In contrast, a taller than wide shape of nodules was the only variable significant for differentiating AH from PTC. Conclusion Suspicious thyroid nodules with cytologic benign results could be followed up with US rather than repeat FNAB, if patients exhibit Tg-Ab positivity, no calcifications in nodules, and a DTD pattern on US. PMID:26256977
Ringel, Matthew D; Hardy, Elena; Bernet, Victor J; Burch, Henry B; Schuppert, Frank; Burman, Kenneth D; Saji, Motoyasu
The development of distant metastasis is the most important predictor of death from thyroid cancer. KiSS-1 is a recently cloned human metastasis suppressor gene whose product, metastin, was recently identified as the endogenous agonist for a novel Gq/11 coupled receptor (metastin receptor). The expression and functional consequences of metastin and the metastin receptor have not been evaluated in thyroid cancer. We measured metastin and metastin receptor mRNA levels in 10 FCs and 13 papillary carcinomas (PCs), 2 benign non-functioning follicular adenomas (FAs), and 11 normal thyroid samples, and evaluated the signaling pathways activated by metastin in ARO thyroid cancer cells that express the metastin receptor endogenously. Paired normal and tumor samples were available for 4 PC and 3 PFC samples. Metastin mRNA was detected in 6/11 normal samples, and 0/2 FA, 2/10 FC, and 9/13 PC samples (p < 0.05 for PC vs. FC). Metastin receptor was not expressed in any normal thyroid or benign FA samples, and was expressed in only a minority (2/10) of FC samples. However, the receptor was expressed in the majority (10/13) of PCs (p = 0.002 for PC vs. normal tissue). Increased levels of metastin receptor were detected in all four PCs compared to adjacent normal tissue. Incubation levels of metastin receptor were detected in all four PCs compared to adjacent normal tissue. Incubation of metastin receptor expressing ARO thyroid cancer cells with metastin resulted in activation of ERK, but not Akt. Taken together, these data suggest a potential role for metastin and/or metastin receptors in modulating the biological behavior of thyroid cancers.
Tabatabaie, Vafa; Surks, Martin I
As life expectancy increases and population age advances, diagnosis and treatment of diseases common in the geriatric population assume an increasingly important role in modern medicine. In the last few years, the emergence of age-specific reference ranges for thyroid-stimulating hormone (TSH) has added to the complexity of diagnosis of thyroid dysfunction in this age group, especially in the 'subclinical' category. The recent studies confirm an increase in population TSH distribution with age, both in cross-sectional and longitudinal studies. Conclusive evidence about adverse cardiovascular, metabolic, and cognitive consequences of subclinical hypothyroidism in the elderly remains elusive. The transient nature of subtle degrees of thyroid dysfunction in a significant proportion of elderly patients has also been reproduced in the recent publications. A growing body of literature in the last few years, reviewed here, highlights the importance of employing additional caution before assigning diagnoses of hypothyroidism or hyperthyroidism to elderly patients and initiation of treatment modalities that can have long-lasting effects.
Sturniolo, Giacomo; Vermiglio, Francesco; Moleti, Mariacarla
Ectopy is the most common embryogenetic defect of the thyroid gland, representing between 48 and 61% of all thyroid dysgeneses. Persistence of thyroid tissue in the context of a thyroglossal duct remnant and lingual thyroid tissue are the most common defects. Although most cases of ectopic thyroid are asymptomatic, any disease affecting the thyroid may potentially involve the ectopic tissue, including malignancies. The prevalence of differentiated thyroid carcinoma in lingual thyroid and thyroglossal duct cyst is around 1% of patients affected with the above thyroid ectopies. We here review the current literature concerning primary thyroid carcinomas originating from thyroid tissue on thyroglossal duct cysts and lingual thyroid.
Stack, Brendan C; Spencer, Horace J; Lee, Christopher E; Medvedev, Sofia; Hohmann, Samuel F; Bodenner, Donald L
Describe data from patients undergoing thyroid surgeries for benign and malignant disease at US academic medical centers. Retrospective, database search. The University Health System (UHC) Consortium (Oak Brook, Illinois) data compiled from discharge summaries. Discharge data were collected from the first quarter of 2002 through the fourth quarter of 2009. Searching strategy was based on diagnosis of thyroid disease and patients undergoing thyroid surgery across all UHC facilities. Demographic information was collected as well as length of stay (LOS) and costs. Complications were evaluated in this analysis. During the study period, 68,014 thyroidectomies were performed, with 27,200 for thyroid cancer. During the same period 6365 neck dissections were performed, with 1539 as stand-alone procedures. Total thyroidectomy was the procedure of choice for malignant disease. More total thyroidectomies and fewer hemithyroidectomies were being performed for benign thyroid disease in the inpatient setting. Almost all postoperative complications were more frequent after surgery for cancer except myocardial infarction and aspiration pneumonia. On average, LOS was longer for benign disease, but costs were higher for malignant disease. This is the largest series reporting inpatient LOS and mortality for thyroid surgery. The limitation of this study is that it reports patients whose stays were more than 23 hours, leaving out a significant number of thyroid surgeries that are performed as outpatients. Although the results contribute greatly to characterizing inpatient surgery, the results may not reflect current US trends for thyroid surgery.
CHEN, GUANG; LIU, ZENGGUANG; SU, CHANG; GUAN, QIANG; WAN, FANG; DONG, BINGFEI; BAO, LIANG; ZHANG, WENXIN; WANG, YINPING; WANG, GUIMIN
Primary peripheral nerve sheath tumors (PNSTs) of the thyroid gland are rare, with fewer than 30 cases reported in the medical literature to date. Primary PNSTs of the thyroid gland are classiﬁed into malignant and benign PNSTs. The benign PNSTs may be further subclassified into neuroﬁbromas and Schwannomas. This is the case report of a 51-year-old male patient presenting with multiple primary PNSTs involving the left lobe of the thyroid gland. The patient underwent total excision of the thyroid gland and the pathological results indicated a Schwannoma with Antoni type A and B cells. The literature was reviewed briefly and, to the best of our knowledge, this is the first case report of multiple primary PNSTs of the thyroid gland. PMID:26893864
Chen, Guang; Liu, Zengguang; Su, Chang; Guan, Qiang; Wan, Fang; Dong, Bingfei; Bao, Liang; Zhang, Wenxin; Wang, Yinping; Wang, Guimin
Primary peripheral nerve sheath tumors (PNSTs) of the thyroid gland are rare, with fewer than 30 cases reported in the medical literature to date. Primary PNSTs of the thyroid gland are classiﬁed into malignant and benign PNSTs. The benign PNSTs may be further subclassified into neuroﬁbromas and Schwannomas. This is the case report of a 51-year-old male patient presenting with multiple primary PNSTs involving the left lobe of the thyroid gland. The patient underwent total excision of the thyroid gland and the pathological results indicated a Schwannoma with Antoni type A and B cells. The literature was reviewed briefly and, to the best of our knowledge, this is the first case report of multiple primary PNSTs of the thyroid gland.
Waguespack, Steven G.; Bauer, Andrew J.; Angelos, Peter; Benvenga, Salvatore; Cerutti, Janete M.; Dinauer, Catherine A.; Hamilton, Jill; Hay, Ian D.; Luster, Markus; Parisi, Marguerite T.; Rachmiel, Marianna; Thompson, Geoffrey B.; Yamashita, Shunichi
Background: Previous guidelines for the management of thyroid nodules and cancers were geared toward adults. Compared with thyroid neoplasms in adults, however, those in the pediatric population exhibit differences in pathophysiology, clinical presentation, and long-term outcomes. Furthermore, therapy that may be recommended for an adult may not be appropriate for a child who is at low risk for death but at higher risk for long-term harm from overly aggressive treatment. For these reasons, unique guidelines for children and adolescents with thyroid tumors are needed. Methods: A task force commissioned by the American Thyroid Association (ATA) developed a series of clinically relevant questions pertaining to the management of children with thyroid nodules and differentiated thyroid cancer (DTC). Using an extensive literature search, primarily focused on studies that included subjects ≤18 years of age, the task force identified and reviewed relevant articles through April 2014. Recommendations were made based upon scientific evidence and expert opinion and were graded using a modified schema from the United States Preventive Services Task Force. Results: These inaugural guidelines provide recommendations for the evaluation and management of thyroid nodules in children and adolescents, including the role and interpretation of ultrasound, fine-needle aspiration cytology, and the management of benign nodules. Recommendations for the evaluation, treatment, and follow-up of children and adolescents with DTC are outlined and include preoperative staging, surgical management, postoperative staging, the role of radioactive iodine therapy, and goals for thyrotropin suppression. Management algorithms are proposed and separate recommendations for papillary and follicular thyroid cancers are provided. Conclusions: In response to our charge as an independent task force appointed by the ATA, we developed recommendations based on scientific evidence and expert opinion for the
Francis, Gary L; Waguespack, Steven G; Bauer, Andrew J; Angelos, Peter; Benvenga, Salvatore; Cerutti, Janete M; Dinauer, Catherine A; Hamilton, Jill; Hay, Ian D; Luster, Markus; Parisi, Marguerite T; Rachmiel, Marianna; Thompson, Geoffrey B; Yamashita, Shunichi
Previous guidelines for the management of thyroid nodules and cancers were geared toward adults. Compared with thyroid neoplasms in adults, however, those in the pediatric population exhibit differences in pathophysiology, clinical presentation, and long-term outcomes. Furthermore, therapy that may be recommended for an adult may not be appropriate for a child who is at low risk for death but at higher risk for long-term harm from overly aggressive treatment. For these reasons, unique guidelines for children and adolescents with thyroid tumors are needed. A task force commissioned by the American Thyroid Association (ATA) developed a series of clinically relevant questions pertaining to the management of children with thyroid nodules and differentiated thyroid cancer (DTC). Using an extensive literature search, primarily focused on studies that included subjects ≤18 years of age, the task force identified and reviewed relevant articles through April 2014. Recommendations were made based upon scientific evidence and expert opinion and were graded using a modified schema from the United States Preventive Services Task Force. These inaugural guidelines provide recommendations for the evaluation and management of thyroid nodules in children and adolescents, including the role and interpretation of ultrasound, fine-needle aspiration cytology, and the management of benign nodules. Recommendations for the evaluation, treatment, and follow-up of children and adolescents with DTC are outlined and include preoperative staging, surgical management, postoperative staging, the role of radioactive iodine therapy, and goals for thyrotropin suppression. Management algorithms are proposed and separate recommendations for papillary and follicular thyroid cancers are provided. In response to our charge as an independent task force appointed by the ATA, we developed recommendations based on scientific evidence and expert opinion for the management of thyroid nodules and DTC in
The frequency of tumors and other conditions of the thyroid gland were examined in 686 female radium dial workers first employed before 1930, who had a radium body-burden measurement while living (1958-76). If one assumed that the two thyroid cancers ascertained were radiation-induced and that a linear dose-response relationship existed, the estimated thyroid cancer risk was 69 (4-124, 95% confidence range) per 10(6) person-rem thyroid dose equivalent from internal and external radiation. Using data from the Connecticut tumor registry to obtain expected numbers of thyroid cancer, the estimated risk (2 observed vs. 0.67 expected cases) was 46 (95% confidence interval = -19 to 101) excess cases per 10(6) person-rem. Risk estimates were based on crude estimates of external radiation exposure and uncertain quality factors for internal radiation from alpha particles ingested. The frequencies of benign tumor (adenoma), nodules, and goiters were not significantly higher in the higher thyroid-dose groups (5-19, greater than or equal to 20 or greater than or equal to 50 rem) than in the lowest dose group (less than 5 rem). In 1237 female dial workers first employed before 1930, with or without a radium body-burden measurement, no deaths due to thyroid cancer (underlying cause of death on death certificates) were observed during 1950-76, when 0.4 deaths were expected. In a subgroup of 84 Illinois female dial workers who were long-term survivors, means for thyroid function test (T3 resin uptake and free thyroxine index) results did not differ among the thyroid-dose groups.
von Brevern, Michael
Benign paroxysmal positional vertigo (BPPV) is the most common and the most effectively treated vestibular disorder. The prevailing pathomechanism is canalolithiasis, which is otoconia falling in one of the semicircular canals where they move in response to changes of the head position, triggering excitation of the vestibular receptors of the affected canal. In the majority of patients with BPPV, the posterior canal is affected by canalolithiasis and there are two highly effective therapeutic maneuvers for treatment. About 20% of patients present with lithiasis of the horizontal or anterior canal. The author focuses on recent advances in diagnosis and treatment of the more rare variants of BPPV.
Davis, Scott; Kopecky, Kenneth J; Hamilton, Thomas E; Onstad, Lynn
Approximately 740,000 Ci (2.73 x 10(16) Bq) of iodine 131 (131I) were released to the atmosphere from the Hanford Nuclear Site in Washington State from 1944 through 1957. The risk of thyroid disease resulting from prolonged environmental 131I exposure is poorly understood. The Hanford Thyroid Disease Study (HTDS) was conducted to determine if thyroid disease is increased among persons exposed as children to atmospheric releases of 131I from Hanford. Retrospective cohort study. Exposure could have occurred from December 1944 through 1957. Follow-up occurred until the time of the HTDS examination (December 1992-September 1997). Participants' thyroid radiation doses from Hanford's 131I releases were estimated from interview data regarding residence and dietary histories. The cohort included a sample of all births from 1940 through 1946 to mothers with usual residence in 1 of 7 counties in eastern Washington State. Of 5199 individuals identified, 4350 were located alive and 3440 were evaluable; ie, had sufficient data for dose estimation and received an HTDS evaluation for thyroid disease, including a thyroid ultrasound, physical examination, and fine needle biopsy if required to evaluate thyroid nodularity. Thyroid cancer, benign thyroid nodules, total neoplasia, any thyroid nodules, autoimmune thyroiditis, and hypothyroidism. There was no evidence of a relationship between Hanford radiation dose and the cumulative incidence of any of the outcomes. These results remained unchanged after taking into account several factors that might confound the relationship between radiation dose and the outcomes of interest. These results do not support the hypothesis that exposure during infancy and childhood to 131I at the dose levels (median, 97 mGy; mean, 174 mGy) and exposure circumstances experienced by our study participants increases the risk of the forms of thyroid disease evaluated in this study.
Qasem, Ebtesam; Murugan, Avaniyapuram Kannan; Al-Hindi, Hindi; Xing, Mingzhao; Almohanna, Mai; Alswailem, Meshael; Alzahrani, Ali S
Telomerase reverse transcriptase (TERT) promoter mutations C228T and C250T have recently been described in follicular cell-derived thyroid cancer (TC) in patients from North America and Europe. In this study, we explored whether these findings could be replicated in patients from a different ethnic group. We screened 17 benign thyroid adenomas and 265 TC samples from patients in the Middle East for these mutations by PCR and direct sequencing using DNA isolated from paraffin-embedded tumor tissues. None of the 17 benign adenomas harbored TERT promoter mutations. Of 265 TC, 34 (12.8%) harbored TERT promoter mutations, including 10/153 (6.5%) conventional papillary TC (CPTC), 8/57 (14.0%) follicular variant PTC, 9/30 (30%) tall cell variant PTC, 1/3 (30%) Hurthle cell thyroid cancer (HTC), 1/5 (20%) follicular TC, and 5/13 (38.5%) poorly differentiated TC. C250T mutation was present in only 6/265 (2.3%) cases, while C228T mutation was present in a total of 28/265 (10.6%) cases. These two mutations were mutually exclusive. TERT promoter mutations were significantly more common in older (≥45 years) than younger patients and were associated with larger tumour size, vascular invasion, higher TNM stage (stage III and IV), BRAF(V600E) mutation and persistent/recurrent disease at 6-12 months after initial treatment and at the last follow up. These associations were stronger in non-CPTC. Thus, this study on a large cohort of TC patients from Middle East demonstrates that TERT promoter mutations are relatively common, especially in the non-CPTC, and are associated with more aggressive histopathological features, BRAF(V600E) mutation, and disease persistence/recurrence than the WT TERT. © 2015 Society for Endocrinology.
Torres-Montaner, A; Beltran, M; d Romero; Oliva, H
Because sarcomas of the anterior lower neck region occur so infrequently, they are not usually considered in the differential diagnosis of Riedel's thyroiditis. Riedel's thyroiditis itself may be confused on clinical grounds alone with malignant neoplasms because of its invasive features. Sarcomatoid carcinoma is the main entity to be discarded in this regard. This is accomplished through histological examination by the finding of carcinomatous areas and/or reactivity with epithelial markers. These features also set apart sarcomatoid carcinoma from true sarcomas. This report concerns a patient with a sarcoma of the anterior lower neck region which was initially suspected to be Riedel's thyroiditis or sarcomatoid carcinoma on clinical and radiological grounds. A peroperative biopsy was interpreted by two independent pathologists as consistent with Riedel's thyroiditis. The subsequent clinical course and postmortem examination demonstrated a high grade sarcoma with metastasis to both lungs and the pleura, and invasion of adjacent neck structures. Nevertheless, some areas of the postmortem material showed a microscopic pattern similar to mediastinal fibrosis, raising the possibility of the malignant transformation of a fibrosclerotic lesion. Key Words: Riedel's thyroiditis • sarcomatoid carcinoma • fibrous histiocytoma • differential diagnosis PMID:11429435
Advances in understanding the physiology of the thyroid function in normal pregnancy have highlighted the importance of the consequences of abnormal thyroid function on mother and fetal outcomes. Thyroid diseases are common in young women of childbearing age while management of thyroid diseases is relatively straightforward. For each thyroid dysfunction (hypothyroxinemia, hypothyroidism, hyperthyroidism, postpartum thyroiditis), the issues with the obstetric complications of the mother and the fetus are considered. Indeed, early recognition of thyroid diseases during pregnancy and appropriate management has the potential to improve outcome for the mother and the fetus.
Prinz, R.A.; Barbato, A.L.; Braithwaite, S.S.; Brooks, M.H.; Lawrence, A.M.; Paloyan, E.
Twelve patients with coexistent well-differentiated thyroid carcinoma and primary hyperparathyoidism were studied to determine the frequency of previous radiation exposure. Eight were found to have received prior irradiation. External radiation was administered to the head and neck region for benign conditions such as tonsillar enlargement, acne, scrofula, and thyroid enlargement. One patient received 131I therapy for carcinoma of the thyroid. The observation that 67% of the patients in this series had previous radiation to the head and neck strongly implicates radiation exposure in the development of coexistent well-differentiated thyroid carcinoma and hyperparathyroidism.
Gutzeit, Andreas; Stuckmann, Gerd; Tosoni, Ivo; Erdin, Dieter; Binkert, Christoph A
Hemangioma of the thyroid gland is an extremely rare condition. We report a case of a primary cavernous hemangioma in the left lobe of the thyroid gland in an 84-year-old woman. Ultrasound examination of the lesion showed an inhomogeneous and hypoechoic nodule that was well demarcated from the rest of the left lobe and hypovascular on color Doppler ultrasound. Ultrasound-guided fine-needle aspiration was performed. The cytologic differential diagnosis included an anaplastic carcinoma of the thyroid gland. After hemithyroidectomy, the final diagnosis was a benign hemangioma of the thyroid gland.
Page, Cyril; Duverlie, Gilles; Sevestre, Henri; Desailloud, Rachel
Erythrovirus B19 (EVB19) has been incriminated, over recent years, in the onset and/or pathogenesis of many diseases, especially autoimmune thyroid diseases. This review of the literature (published over the last 40 years using Pubmed and Science Direct search engines) was designed to define the role of EVB19, particularly in autoimmune thyroid diseases.Two cases of subacute thyroiditis, one case of Graves' disease (associated with type 1 diabetes and rheumatoid arthritis), and one case of Hashimoto's thyroiditis following acute EVB19 infection were reported. A retrospective case-control study in a pediatric population demonstrated the role of EVB19 in Hashimoto's thyroiditis. Four retrospective studies of pathology slides (including PCR, immunohistochemistry or in situ hybridization) and a prospective case-control study on pathology slides demonstrated the presence of EVB19 in thyroid tissue of patients with benign multinodular goiter, Graves' disease, autoimmune thyroiditis (including Hashimoto's thyroiditis), and thyroid cancer. EVB19 can be demonstrated in the thyroid gland in a wide range of diseases. Although acute EVB19 infection could theoretically trigger autoimmune thyroid disease, there is currently no evidence that EVB19 plays a specific role in the pathophysiology of autoimmune thyroid diseases. © 2014 Wiley Periodicals, Inc.
Tellechea, Oscar; Cardoso, José Carlos; Reis, José Pedro; Ramos, Leonor; Gameiro, Ana Rita; Coutinho, Inês; Baptista, António Poiares
Benign follicular tumors comprise a large and heterogeneous group of neoplasms that share a common histogenesis and display morphological features resembling one or several portions of the normal hair follicle, or recapitulate part of its embryological development. Most cases present it as clinically nondescript single lesions and essentially of dermatological relevance. Occasionally, however, these lesions be multiple and represent a cutaneous marker of complex syndromes associated with an increased risk of visceral neoplasms. In this article, the authors present the microscopic structure of the normal hair follicle as a basis to understand the type and level of differentiation of the various follicular tumors. The main clinicopathological features and differential diagnosis of benign follicular tumors are then discussed, including dilated pore of Winer, pilar sheath acanthoma, trichoadenoma, trichilemmoma, infundibuloma, proliferating trichilemmal cyst/tumor, trichoblastoma and its variants, pilomatricoma, trichodiscoma/fibrofolliculoma, neurofollicular hamartoma and trichofolliculoma. In addition, the main syndromes presenting with multiple follicular tumors are also discussed, namely Cowden, Birt-Hogg-Dubé, Rombo and Bazex-Dupré-Christol syndromes, as well as multiple tumors of follicular infundibulum (infundibulomatosis) and multiple trichoepitheliomas. Although the diagnosis of follicular tumors relies on histological examination, we highlight the importance of their knowledge for the clinician, especially when in presence of patients with multiple lesions that may be the cutaneous marker of a cancer-prone syndrome. The dermatologist is therefore in a privileged position to recognize these lesions, which is extremely important to provide further propedeutic, appropriate referral and genetic counseling for these patients. PMID:26734858
Hendryx, Michael; Manson, JoAnn E.; Liang, XiaoYun; Margolis, Karen L.
Context: Estrogen has been suggested as a risk factor for thyroid cancer. Objective: The aim of this study is to examine the associations between hysterectomy, bilateral salpingo-oophorectomy (BSO), and incidence of thyroid cancer. Design: This was a prospective cohort study. Setting: The study was conducted at 40 clinical centers in the United States. Participants: A total of 127 566 women aged 50–79 were enrolled in the Women's Health Initiative during 1993–1998. Main Outcome Measures: Hysterectomy and BSO were self-reported. Incident thyroid cancer cases were confirmed by medical record review. Results: Three hundred forty-four incident thyroid cancer cases were identified during an average of 14.4 years of follow-up. Compared with women without hysterectomy, women with hysterectomy, regardless of ovarian status, had a significantly higher risk of thyroid cancer (hazard ratio 1.46 [95% confidence interval 1.16–1.85]). Hysterectomy with BSO was not associated with a lower risk for thyroid cancer compared with hysterectomy alone. Among women with hysterectomy alone, hormone therapy use was associated with lower risk of thyroid cancer (hazard ratio 0.47 [95% confidence interval 0.28–0.78]). However, we did not observe significant associations between hormone therapy use and thyroid cancer in women without hysterectomy or women with hysterectomy plus BSO. Conclusion: Our large prospective study observed that hysterectomy, regardless of oophorectomy status, was associated with increased risk of thyroid cancer among postmenopausal women. In addition, our data did not support the hypotheses that exogenous estrogen is a risk factor or that estrogen deprivation is a protective factor for thyroid cancer. Further research is needed to clarify whether these apparent associations may be due to shared risk factors between indications for hysterectomy and thyroid cancer. PMID:27459531
Luo, Juhua; Hendryx, Michael; Manson, JoAnn E; Liang, XiaoYun; Margolis, Karen L
Estrogen has been suggested as a risk factor for thyroid cancer. The aim of this study is to examine the associations between hysterectomy, bilateral salpingo-oophorectomy (BSO), and incidence of thyroid cancer. This was a prospective cohort study. The study was conducted at 40 clinical centers in the United States. A total of 127 566 women aged 50-79 were enrolled in the Women's Health Initiative during 1993-1998. Hysterectomy and BSO were self-reported. Incident thyroid cancer cases were confirmed by medical record review. Three hundred forty-four incident thyroid cancer cases were identified during an average of 14.4 years of follow-up. Compared with women without hysterectomy, women with hysterectomy, regardless of ovarian status, had a significantly higher risk of thyroid cancer (hazard ratio 1.46 [95% confidence interval 1.16-1.85]). Hysterectomy with BSO was not associated with a lower risk for thyroid cancer compared with hysterectomy alone. Among women with hysterectomy alone, hormone therapy use was associated with lower risk of thyroid cancer (hazard ratio 0.47 [95% confidence interval 0.28-0.78]). However, we did not observe significant associations between hormone therapy use and thyroid cancer in women without hysterectomy or women with hysterectomy plus BSO. Our large prospective study observed that hysterectomy, regardless of oophorectomy status, was associated with increased risk of thyroid cancer among postmenopausal women. In addition, our data did not support the hypotheses that exogenous estrogen is a risk factor or that estrogen deprivation is a protective factor for thyroid cancer. Further research is needed to clarify whether these apparent associations may be due to shared risk factors between indications for hysterectomy and thyroid cancer.
Liu, Yueyi I; Kamaya, Aya; Desser, Terry S; Rubin, Daniel L
It is challenging to distinguish benign from malignant thyroid nodules on high resolution ultrasound. Many ultrasound features have been studied individually as predictors for thyroid malignancy, none with a high degree of accuracy, and there is no consistent vocabulary used to describe the features. Our hypothesis is that a standard vocabulary will advance accuracy. We performed a systemic literature review and identified all the sonographic features that have been well studied in thyroid cancers. We built a controlled vocabulary for describing sonographic features and to enable us to unify data in the literature on the predictive power of each feature. We used this terminology to build a Bayesian network to predict thyroid malignancy. Our Bayesian network performed similar to or slightly better than experienced radiologists. Controlled terminology for describing thyroid radiology findings could be useful to characterize thyroid nodules and could enable decision support applications.
Ron, E.; Modan, B.; Preston, D.; Alfandary, E.; Stovall, M.; Boice, J.D. Jr. )
The thyroid gland is highly sensitive to the carcinogenic effects of ionizing radiation. Previously, we reported a significant increase of thyroid cancer and adenomas among 10,834 persons in Israel who received radiotherapy to the scalp for ringworm. These findings have now been extended with further follow-up and revised dosimetry. Overall, 98 thyroid tumors were identified among the exposed and 57 among 10,834 nonexposed matched population and 5392 sibling comparison subjects. An estimated thyroid dose of 9 cGy was linked to a fourfold (95% Cl = 2.3-7.9) increase of malignant tumors and a twofold (95% Cl = 1.3-3.0) increase of benign tumors. The dose-response relationship was consistent with linearity. Age was an important modifier of risk with those exposed under 5 years being significantly more prone to develop thyroid tumors than older children. The pattern of radiation risk over time could be described on the basis of a constant multiplication of the background rate, and an absolute risk model was not compatible with the observed data. Overall, the excess relative risk per cGy for thyroid cancer development after childhood exposure is estimated as 0.3, and the absolute excess risk as 13 per 10(6) PY-cGy. For benign tumors the estimated excess relative risk was 0.1 per cGy and the absolute risk was 15 per 10(6) PY-cGy.
Background Several authors have questioned the accuracy of fine-needle aspiration cytology (FNAC) in large nodules. Some surgeons recommend thyroidectomy for nodules ≥4 cm even in the setting of benign FNAC, due to increased risk of malignancy and increased false negative rates in large thyroid nodules. The goal of our study was to evaluate if thyroid nodule size is associated with risk of malignancy, and to evaluate the false negative rate of FNAC for thyroid nodules ≥4 cm in our patient population. Methods This is a retrospective study of 85 patients with 101 thyroid nodules, who underwent thyroidectomy for thyroid nodules measuring ≥4 cm. Results The overall risk of malignancy in nodules ≥4 cm was 9.9%. Nodule size was not associated with risk of malignancy (odds ratio, 1.02) after adjusting for nodule consistency, age, and sex (P=0.6). The false negative rate for FNAC was 0%. Conclusion Nodule size was not associated with risk of malignancy in nodules ≥4 cm in our patient population. FNAC had a false negative rate of 0. Patients with thyroid nodules ≥4 cm and benign cytology should not automatically undergo thyroidectomy. PMID:28181427
Lee, Geraldine A; Stub, Dion; Ling, Han
Atrial fibrillation (AF) is the most commonly seen arrhythmia and its prevalence increases with age. In the general population, rates of 1-2% are reported but in older patients, the rates increase to over 10% (in those aged 85years or older). Many older patients present to the emergency department (ED) with complaints that could be caused or associated with AF including valvular heart disease, hypertension, heart failure, an underlying infection (urinary or chest) and thyroid disorder. The most devastating complication of AF is stroke and early detection of AF and initiation of treatment (specifically the use of anti-coagulant medication) can significantly reduce the risk. AF is associated with high healthcare costs and has significant impacts on disability and quality of life especially if a stroke occurs. This review aims to describe the aetiology and treatment options for patients with newly diagnosed and previously diagnosed AF with an emphasis on how ED staff can manage older patients with AF and ensure optimal care is given. The treatment of AF has three main considerations (i) appropriateness for thromboembolic prophylaxis, (ii) rate control (including anti-arrhythmics, cardiac glycosides, B blockers and calcium channel blockers) and (iii) rhythm control with traditional cardioversion (either electrically or pharmacologically) or utilising interventional means to maintain sinus rhythm with cardiac surgery and more recently radio-frequency ablation. As anti-coagulation is widely implemented, the risks and benefits associated with warfarin and the newer agents will be described. Given that more than half of those with AF are over 75years and 30% of AF is diagnosed incidentally, there is an imperative for prompt diagnosis to reduce the risk of debilitating complications especially stroke. AF should not be viewed as yet another concomitant "benign" condition. Emergency staff are well placed to detect AF and ensure appropriate treatment is commenced to reduce the
Liu, Baoxian; Liang, Jinyu; Zhou, Luyao; Lu, Ying; Zheng, Yanling; Tian, Wenshuo; Xie, Xiaoyan
To evaluate the diagnostic performance of shear wave elastography (SWE) in the differentiation of malignant and benign thyroid nodules with coexistent Hashimoto's thyroiditis (HT). Case series with chart review. Tertiary general hospital. From September 2012 to January 2014, conventional ultrasound and SWE were performed on 243 patients with 286 thyroid nodules with histologic results. The HT group consisted of 93 patients with 117 nodules. The non-HT group consisted of 140 patients with 169 nodules. In the benign and malignant nodules, there were no significant differences of the mean, minimum, or maximum SWE values between HT and non-HT groups (P = .158-.945). However, SWE values of extranodular tissue were significantly higher in the HT group (P = .000-.011). In the HT group, the maximum SWE value showed the highest area under the receiver operating characteristic curve (0.817; 95% confidence interval, .735-.900), and there were no significant differences when compared with other SWE parameters (P = .669-.848). In the multivariate analysis, hypoechogenicity (odds ratio = 9.855, P = .002), microcalcification (odds ratio = 3.977, P = .046), and maximum SWE value (odds ratio = 40.712, P < .001) were independent predictors of thyroid malignancy. SWE could be performed to obtain a differential diagnosis between malignant and benign thyroid nodules, including nodules with coexistent HT. Although all the SWE parameters within a 2-mm region of interest that was placed on the stiffest region could be applied, we suggest that the maximum value of nodules harbored within a Hashimoto's gland be used. © American Academy of Otolaryngology—Head and Neck Surgery Foundation 2015.
Fortunato, Rodrigo S; Ferreira, Andrea C F; Hecht, Fabio; Dupuy, Corinne; Carvalho, Denise P
Thyroid diseases, such as autoimmune disease and benign and malignant nodules, are more prevalent in women than in men, but the mechanisms involved in this sex difference is still poorly defined. H₂O₂ is produced at high levels in the thyroid gland and regulates parameters such as cell proliferation, migration, survival, and death; an imbalance in the cellular oxidant-antioxidant system in the thyroid may contribute to the greater incidence of thyroid disease among women. Recently, we demonstrated the existence of a sexual dimorphism in the thyrocyte redox balance, characterized by higher H₂O₂ production, due to higher NOX4 and Poldip2 expression, and weakened enzymatic antioxidant defense in the thyroid of adult female rats compared with male rats. In addition, 17β-estradiol administration increased NOX4 mRNA expression and H₂O₂ production in thyroid PCCL3 cells. In this review, we discuss the possible involvement of oxidative stress in estrogen-related thyroid pathophysiology. Our current hypothesis suggests that a redox imbalance elicited by estrogen could be involved in the sex differences found in the prevalence of thyroid dysfunctions.
Thyroid cancers have long been considered to arise in middle age and, after their repeated proliferation, resulting in further damage to the genome, they progress to more aggressive and lethal cancers. However, in 2014, some studies were reported that might lead to a marked change in our understanding of the natural history of thyroid cancer. A high prevalence of papillary carcinoma in the young suggested that the first initiation of thyroid cancer is likely to occur in the infantile period. Such a conclusion was also supported by a very slow growth rate of papillary microcarcinomas (PMCs) in an observation trial. The proliferation rate of PMCs was negatively correlated with the age, and surgery to remove PMCs did not contribute to reduce mortality from thyroid cancer. These findings strongly suggested the existence of self-limiting cancers, which are truly malignant but do not progress to lethal cancers, for the first time in human history. The early detection of self-limiting cancers results in overdiagnosis. Ultrasonographic screening of the thyroid in the young should be avoided. Lethal thyroid cancers, whose origin is still unknown, appear suddenly after middle age. In the elderly, thyroid cancers are a mixture of self-limiting and lethal cancers; thus, when thyroid cancer is detected, careful follow-up with examination of its growth rate is required.
Trzebińska, Anna; Dobruch-Sobczak, Katarzyna; Jakubowski, Wiesław; Jędrzejowski, Maciej
Ultrasonography is a primary imaging technique in patients with suspected thyroid disease. It allows to assess the location, size and echostructures of the thyroid gland as well as detect focal lesions, along with indication of their size, echogenicity, echostructure and vascularity. Based on these features, ultrasound examination allows to predict abnormal focal lesions for biopsy and monitor the biopsy needle track. This paper presents the standards of thyroid ultrasound examination regarding ultrasound apparatus technical requirements, scanning techniques, readings, measurements, and the description of the examination. It discusses the ultrasound features of increased malignancy risk in focal lesions (nodules) found in the thyroid gland. It presents indications for fine needle aspiration biopsy of the thyroid gland for the visibility of single nodules (focal lesions) and numerous lesions as well as discusses contraindications for thyroid biopsy. It describes the biopsy technique, possible complications and rules for post-biopsy monitoring of benign lesions. The paper is an update of the Standards of the Polish Ultrasound Society issued in 2011. It has been prepared on the basis of current literature, taking into account the information contained in the following publications: Thyroid ultrasound examination and Recommendations of the Polish Ultrasound Society for the performance of the FNAB of the thyroid.
Dobruch-Sobczak, Katarzyna; Jakubowski, Wiesław; Jędrzejowski, Maciej
Ultrasonography is a primary imaging technique in patients with suspected thyroid disease. It allows to assess the location, size and echostructures of the thyroid gland as well as detect focal lesions, along with indication of their size, echogenicity, echostructure and vascularity. Based on these features, ultrasound examination allows to predict abnormal focal lesions for biopsy and monitor the biopsy needle track. This paper presents the standards of thyroid ultrasound examination regarding ultrasound apparatus technical requirements, scanning techniques, readings, measurements, and the description of the examination. It discusses the ultrasound features of increased malignancy risk in focal lesions (nodules) found in the thyroid gland. It presents indications for fine needle aspiration biopsy of the thyroid gland for the visibility of single nodules (focal lesions) and numerous lesions as well as discusses contraindications for thyroid biopsy. It describes the biopsy technique, possible complications and rules for post-biopsy monitoring of benign lesions. The paper is an update of the Standards of the Polish Ultrasound Society issued in 2011. It has been prepared on the basis of current literature, taking into account the information contained in the following publications: Thyroid ultrasound examination and Recommendations of the Polish Ultrasound Society for the performance of the FNAB of the thyroid. PMID:26676167
Layfield, Lester J; Abrams, Jacki; Cochand-Priollet, Beatrix; Evans, Doug; Gharib, Hossein; Greenspan, Frank; Henry, Michael; LiVolsi, Virginia; Merino, Maria; Michael, Claire W; Wang, Helen; Wells, Samuel A
The National Cancer Institute (NCI) sponsored the NCI Thyroid Fine Needle Aspiration (FNA) State of the Science Conference on October 22-23, 2007 in Bethesda, MD. The 2-day meeting was accompanied by a permanent informational Web site and several on-line discussion periods between May 1 and December 15, 2007 (http://thyroidfna.cancer.gov). This document addresses follow-up procedures and therapeutic options for suggested diagnostic categories. Follow-up options for "nondiagnostic" and "benign" thyroid aspirates are given. The value of ultrasound examination in the follow-up of "nondiagnostic" and "benign" thyroid aspirates is discussed. Ultrasound findings requiring reaspiration or surgical resection are described as are the timing and length of clinical and ultrasonographic surveillance for cytologically "benign" nodules. Options for surgical intervention are given for the diagnostic categories of "atypical/borderline," "follicular neoplasm," "suspicious for malignancy" and "malignant" (http://thyroidfna.cancer.gov/pages/info/agenda/).
Liu, Rengyun; Xing, Mingzhao
Two promoter mutations, chr5:1 295 228C>T and chr5:1 295 250C>T, in the gene for telomerase reverse transcriptase (TERT) have been recently identified in thyroid cancers and shown to be important in thyroid tumor pathogenesis. The diagnostic and prognostic potentials of testing for these mutations on thyroid fine-needle aspiration biopsy (FNAB) have not been investigated. Herein, we examined the two TERT promoter mutations along with the BRAF V600E mutation by direct DNA sequencing on 308 FNAB specimens preoperatively obtained from thyroid nodules with postoperatively confirmed pathological diagnoses. We found TERT promoter mutations in 0.0% (0/179) of benign thyroid nodules and 7.0% (9/129) of thyroid nodules of differentiated thyroid cancer, representing a 100% diagnostic specificity and 7.0% sensitivity, with the latter rising to 38.0% (49/129) when combined with BRAF V600E testing. Several TERT-promoter-mutation-positive thyroid nodules were cytologically indeterminate on FNAB. Approximately 80% of the TERT promoter mutation-positive thyroid nodules were thyroid cancers with aggressive clinicopathological behaviors, such as extrathyroidal invasion, lymph node metastases, distant metastases, disease recurrence or patient death. Thus, a positive TERT promoter mutation test not only definitively diagnoses a thyroid nodule as cancerous but also preoperatively identifies a cancer with aggressive potential. This is the first study, to our knowledge, of TERT promoter mutations on thyroid FNAB, demonstrating the value of this novel molecular testing in the diagnosis of thyroid nodules and preoperative risk stratification of thyroid cancer. Thus, testing of TERT promoter mutations on FNAB will enhance and improve the current molecular-based approaches to the management of thyroid nodules and thyroid cancer. © 2014 Society for Endocrinology.
Thyroid hormones playa critical role in the normal development ofthe mammalian brain. Thyroid disrupting chemicals (TDCs) are environmental contaminants that alter the structure or function ofthe thyroid gland, alter regulatory enzymes associated with thyroid hormone (TH) homeost...
Thyroid hormones playa critical role in the normal development ofthe mammalian brain. Thyroid disrupting chemicals (TDCs) are environmental contaminants that alter the structure or function ofthe thyroid gland, alter regulatory enzymes associated with thyroid hormone (TH) homeost...
Li, H; Li, J
Thyroid disorders include autoimmune thyroid diseases (AITD), thyroid goiter, nodule and cancer. AITD mainly consist of autoimmune thyroiditis and Graves disease. The common characteristic of thyroid disorders is female preponderance in their prevalence. The female-to-male rate ratio is reported at 4~6:1 for AITD and about 3~4:1 for thyroid nodule. For PTC, it is greatest during reproductive age and drops from five and more in patients aged 20-24, to 3.4 in patients aged 35-44 to one in patients over 80. The effects of female gonadal hormones and X chromosome inactivation on thyroid gland and immune system greatly contribute to the female predilection of AITD. The former mainly include prolactin and estrogen. The direct actions of estrogen on the thyroid tissue contribute to the development of thyroid goiter, nodule and cancer in women.
El Mezni, F; Zeddini, A; Hamzaoui, A; Ismail, O; Ghrairi, H; Ben Miled, K; Smati, B; Kilani, T
Benign myoepithelioma of the lung is a benign tumor caused by proliferating myoepithelial cells with no ductal component. These tumors are exceptional: only three cases have been reported in the literature. We report a fourth case in a 37-year-old woman at 8 months gestation. Pathological proof of diagnosis was obtained.
Kurian, Manju A; Jungbluth, Heinz
Normal thyroid metabolism is essential for human development, including the formation and functioning of the central and peripheral nervous system. Disorders of thyroid metabolism are increasingly recognized within the spectrum of paediatric neurological disorders. Both hypothyroid and hyperthyroid disease states (resulting from genetic and acquired aetiologies) can lead to characteristic neurological syndromes, with cognitive delay, extrapyramidal movement disorders, neuropsychiatric symptoms, and neuromuscular manifestations. In this review, the neurological manifestations of genetic disorders of thyroid metabolism are outlined, with particular focus on Allan-Herndon-Dudley syndrome and benign hereditary chorea. We report in detail the clinical features, major neurological and neuropsychiatric manifestations, molecular genetic findings, disease mechanisms, and therapeutic strategies for these emerging genetic 'brain-thyroid' disorders.
Wang, Na; Liu, Tiantian; Sofiadis, Anastasios; Juhlin, C Christofer; Zedenius, Jan; Höög, Anders; Larsson, Catharina; Xu, Dawei
The telomerase reverse transcriptase (TERT) promoter mutations C228T and C250T have been found in many malignancies, including in thyroid carcinomas. However, it is unclear how early these mutations occur in thyroid tumorigenesis. The study included primary tumors from 58 patients initially diagnosed with follicular thyroid adenoma (FTA), a benign entity, 18 with atypical FTA (AFTA) having an uncertain malignant potential, and 52 with follicular thyroid carcinoma (FTC). Sanger sequencing was used to investigate the mutational status of the TERT promoter. Telomere length and TERT messenger RNA (mRNA) expression were determined using quantitative polymerase chain reaction (PCR). Telomerase activity was assessed using a Telomerase PCR enzyme-linked immunosorbent assay kit. The C228T mutation was identified in 1 of 58 FTA (2%) and 3 of 18 AFTA (17%) samples. These 4 tumors all expressed TERT mRNA and telomerase activity, whereas the majority of C228T-negative adenomas lacked TERT expression (C228T versus wild-type, P = .008). The C228T mutation was associated with NRAS gene mutations (P = .016). The patient with C228T-mutated FTA later developed a scar recurrence and died of FTC, whereas none of the remaining 57 patients with FTA had recurrence. No recurrence occurred in 3 patients with AFTA who carried C228T during the follow-up period (36-285 months). Nine of the 52 FTCs (17%) exhibited the TERT mutation (8 of 9 C228T and 1 of 9 C250T), and the presence of the mutation was associated with shorter patient survival. TERT promoter mutations may occur as an early genetic event in thyroid follicular tumors that have not developed malignant features on routine histopathological workup. © 2014 American Cancer Society.
Zhou, Chao; Wang, Yihong; Aguirre, Aaron D.; Tsai, Tsung-Han; Cohen, David W.; Connolly, James L.; Fujimoto, James G.
We evaluate the feasibility of optical coherence tomography (OCT) and optical coherence microscopy (OCM) for imaging of benign and malignant thyroid lesions ex vivo using intrinsic optical contrast. 34 thyroid gland specimens are imaged from 17 patients, covering a spectrum of pathology ranging from normal thyroid to benign disease/neoplasms (multinodular colloid goiter, Hashimoto's thyroiditis, and follicular adenoma) and malignant thyroid tumors (papillary carcinoma and medullary carcinoma). Imaging is performed using an integrated OCT and OCM system, with <4 μm axial resolution (OCT and OCM), and 14 μm (OCT) and <2 μm (OCM) transverse resolution. The system allows seamless switching between low and high magnifications in a way similar to traditional microscopy. Good correspondence is observed between optical images and histological sections. Characteristic features that suggest malignant lesions, such as complex papillary architecture, microfollicules, psammomatous calcifications, or replacement of normal follicular architecture with sheets/nests of tumor cells, can be identified from OCT and OCM images and are clearly differentiable from normal or benign thyroid tissues. With further development of needle-based imaging probes, OCT and OCM could be promising techniques to use for the screening of thyroid nodules and to improve the diagnostic specificity of fine needle aspiration evaluation.
Pope, Jenny P; Steeil, James; Ramsay, Edward C; Reel, Danielle; Newman, Shelley J
Based on microscopic and immunohistochemical characterization, we documented spontaneous proliferative and neoplastic lesions in the thyroid and parathyroid glands of nondomestic felids. Ten animals (4 leopards, 3 tigers, and 3 cougars), all with a previous diagnosis of thyroid neoplasia were identified from the University of Tennessee College of Veterinary Medicine database. The mean age of affected animals was 15.9 y. Twelve neoplasms were identified; 2 animals had 2 concurrent neoplasms. After immunohistochemical characterization using a panel of chromogranin A, thyroglobulin, and calcitonin, 7 of the former thyroid neoplasms were diagnosed as thyroid adenomas, 1 was diagnosed as a thyroid carcinoma, and 4 were diagnosed as parathyroid adenomas. No thyroid medullary neoplasms (C-cell tumors) were diagnosed in the current study. Most of the diagnosed neoplasms were benign (11 of 12), and metastasis was not documented in the single carcinoma. Only 2 animals were suspected to have functional neoplasms (1 thyroid adenoma and 1 parathyroid adenoma), based on associated tissue lesions or serum biochemistry. Other documented lesions in the thyroid and parathyroid glands included thyroid nodular hyperplasia ( n = 7), parathyroid hyperplasia associated with chronic renal disease ( n = 2), a thyroid abscess, and a branchial cyst. Parathyroid adenomas were more commonly diagnosed than expected in comparison with domestic cats. We demonstrated that an immunohistochemistry panel for thyroglobulin, calcitonin, and chromogranin A can be used to differentiate neoplasms of thyroid from parathyroid origin in nondomestic felids.
Madill, Elizabeth M; Cooray, Shamil D
Summary Thyrotoxicosis is an under-recognised but clinically important complication of parathyroidectomy. We report a case of a 37-year-old man with tertiary hyperparathyroidism who initially developed unexplained anxiety, diaphoresis, tachycardia, tremor and hyperreflexia one day after subtotal parathyroidectomy. Thyroid biochemistry revealed suppressed thyroid stimulating hormone and elevated serum free T4 and free T3 levels. Technetium-99m scintigraphy scan confirmed diffusely decreased radiotracer uptake consistent with thyroiditis. The patient was diagnosed with thyrotoxicosis resulting from palpation thyroiditis. Administration of oral beta-adrenergic antagonists alleviated his symptoms and there was biochemical evidence of resolution fourteen days later. This case illustrates the need to counsel patients about thyroiditis as one of the potential risks of parathyroid surgery. It also emphasises the need for biochemical surveillance in patients with unexplained symptoms in the post-operative period and may help to minimise further invasive investigations for diagnostic clarification. Learning points Thyroiditis as a complication of parathyroidectomy surgery is uncommon but represents an under-recognised phenomenon. It is thought to occur due to mechanical damage of thyroid follicles by vigorous palpation. Palpation of the thyroid gland may impair the physical integrity of the follicular basement membrane, with consequent development of an inflammatory response. The majority of patients are asymptomatic, however clinically significant thyrotoxicosis occurs in a minority. Patients should be advised of thyroiditis/thyrotoxicosis as a potential complication of the procedure. Testing of thyroid function should be performed if clinically indicated, particularly if adrenergic symptoms occur post-operatively with no other cause identified. PMID:27482385
Tsuo, Y.S.; Gee, J.M.; Menna, P.; Strebkov, D.S.; Pinov, A.; Zadde, V.
The manufacturing of silicon devices--from polysilicon production, crystal growth, ingot slicing, wafer cleaning, device processing, to encapsulation--requires many steps that are energy intensive and use large amounts of water and toxic chemicals. In the past two years, the silicon integrated-circuit (IC) industry has initiated several programs to promote environmentally benign manufacturing, i.e., manufacturing practices that recover, recycle, and reuse materials resources with a minimal consumption of energy. Crystalline-silicon solar photovoltaic (PV) modules, which accounted for 87% of the worldwide module shipments in 1997, are large-area devices with many manufacturing steps similar to those used in the IC industry. Obviously, there are significant opportunities for the PV industry to implement more environmentally benign manufacturing approaches. Such approaches often have the potential for significant cost reduction by reducing energy use and/or the purchase volume of new chemicals and by cutting the amount of used chemicals that must be discarded. This paper will review recent accomplishments of the IC industry initiatives and discuss new processes for environmentally benign silicon solar-cell manufacturing.
Ruggeri, Rosaria Maddalena; Campennì, Alfredo; Giovinazzo, Salvatore; Saraceno, Giovanna; Vicchio, Teresa Manuela; Carlotta, Dario; Cucinotta, Maria Paola; Micali, Carmelo; Trimarchi, Francesco; Tuccari, Giovanni; Baldari, Sergio; Benvenga, Salvatore
Autonomously functioning, "hot", thyroid nodules are not common in children and adolescents. Such nodules are not considered alarming because they are assumed to be benign adenomas. Herein,