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Sample records for unusual ct findings

  1. Recurrent malignant pheochromocytoma with unusual omental metastasis: 68Ga-DOTANOC PET/CT and 131I-MIBG SPECT/CT scintigraphy findings

    PubMed Central

    Arora, Saurabh; Agarwal, Krishan Kant; Karunanithi, Sellam; Tripathi, Madhavi; Kumar, Rakesh

    2014-01-01

    Pheochromocytomas are rare catecholamine-secreting tumors derived from the sympathetic nervous system. The most common sites of metastasis for pheochromocytoma or extra-adrenal paraganglioma are lymph nodes, bones, lungs, and liver. Patients with known or suspected malignancy should undergo staging with computed tomography (CT) or magnetic resonance imaging as well as functional imaging (e.g. with 123I/131I-MIBG (131I-metaiodobenzylguanidine) and 68Ga-DOTANOC (68Ga-labeled [1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid]-1-NaI3-octreotide) positron emission tomography (PET)/CT) to determine the extent and location of disease. We present a case of recurrent malignant pheochromocytoma with unusual site of metastasis in omentum, which was positive on 68Ga-DOTANOC PET/CT and 131I-MIBG single-photon emission computed tomography (SPECT/)/CT scintigraphy. PMID:25400380

  2. An Unusual Case of Ascending Pancreatitis with Mediastinal Involvement: A Case Report with CT and MRI Findings

    PubMed Central

    Di Cesare, Ernesto; Di Sibio, Alessandra; Gennarelli, Antonio; Felli, Valentina; Vellucci, Valentina; Casazza, Ines; Masciocchi, Carlo

    2014-01-01

    Fluid collections are common findings of pancreatitis and spread, more often, along preferential drainage pathways in the abdomen. In some rare cases, fluid collections may spread towards extra-abdominal sites like the mediastinum leading to the formation of mediastinal collections. We present the case of a 52-years-old man with pain in the right upper quadrant of the abdomen and mid-epigastrium lasting for some hours. Laboratory tests suggested a diagnosis of pancreatitis. CT and subsequent MRI revealed changes consistent with acute exacerbation on chronic pancreatitis spreading to the mediastinum and to the greater omentum. The patient received medical treatment and reported gradual improvement in his laboratory results and CT findings. PMID:24955277

  3. A case of giant cell tumor of sacrum with unusual pulmonary metastases: CT and FDG PET findings.

    PubMed

    Zhang, Yuyang; Reeve, Isaac P; Lewis, David H

    2012-09-01

    A 43-year-old woman was admitted for concern of postcurettage recurrence of left sacral giant cell tumor (GCT). Both MRI and FDG PET revealed a large lesion in the left sacrum with characteristics concerning for local recurrence. Preoperative staging CT showed no evidence of remote metastases. Subsequent restaging CT and FDG PET demonstrate the interval development of a 5 6-mm pulmonary nodule in the right lung base within 40 days after curettage with hypermetabolic features on PET, concerning for pulmonary metastasis of GCT, which was later confirmed by biopsy. As an exception, benign GCT can demonstrate metastases, rapid growth rate, and enhanced FDG avidity on PET for both primary and metastatic lesions. Our case illustrates the importance of recognizing these exceptional features when interpreting FDG PET of GCT to prevent the misinterpretation of metastases as perhaps other etiologies, such as infection. PMID:22889794

  4. Thoracic textilomas: CT findings*

    PubMed Central

    Machado, Dianne Melo; Zanetti, Gláucia; Araujo, Cesar Augusto; Nobre, Luiz Felipe; Meirelles, Gustavo de Souza Portes; Pereira e Silva, Jorge Luiz; Guimarães, Marcos Duarte; Escuissato, Dante Luiz; Souza, Arthur Soares; Hochhegger, Bruno; Marchiori, Edson

    2014-01-01

    OBJECTIVE: The aim of this study was to analyze chest CT scans of patients with thoracic textiloma. METHODS: This was a retrospective study of 16 patients (11 men and 5 women) with surgically confirmed thoracic textiloma. The chest CT scans of those patients were evaluated by two independent observers, and discordant results were resolved by consensus. RESULTS: The majority (62.5%) of the textilomas were caused by previous heart surgery. The most common symptoms were chest pain (in 68.75%) and cough (in 56.25%). In all cases, the main tomographic finding was a mass with regular contours and borders that were well-defined or partially defined. Half of the textilomas occurred in the right hemithorax and half occurred in the left. The majority (56.25%) were located in the lower third of the lung. The diameter of the mass was ≤ 10 cm in 10 cases (62.5%) and > 10 cm in the remaining 6 cases (37.5%). Most (81.25%) of the textilomas were heterogeneous in density, with signs of calcification, gas, radiopaque marker, or sponge-like material. Peripheral expansion of the mass was observed in 12 (92.3%) of the 13 patients in whom a contrast agent was used. Intraoperatively, pleural involvement was observed in 14 cases (87.5%) and pericardial involvement was observed in 2 (12.5%). CONCLUSIONS: It is important to recognize the main tomographic aspects of thoracic textilomas in order to include this possibility in the differential diagnosis of chest pain and cough in patients with a history of heart or thoracic surgery, thus promoting the early identification and treatment of this postoperative complication. PMID:25410842

  5. Unusual Histopathological Findings in Childhood Appendectomy Specimens.

    PubMed

    Buyukbese Sarsu, Sevgi; Ucak, Ramazan; Buyukbese, Mehmet Akif; Karakus, Suleyman Cuneyt; Deniz, Hale

    2015-12-01

    The purpose of this study was to find the unusual findings in the childhood appendectomy specimens and their incidence. The clinicopathological data of 1,306 patients whose ages ranged from 3 to 16 were retrospectively collected. Histopathological findings in appendectomy specimens taken from patients who had a prediagnosis of appendicitis were obtained. Incidental appendectomies were not included in the research. Unusual findings were reevaluated in the histopathological assessment of appendectomy specimens. The number of patients whose pathological findings are considered unusual is 25 (1.91%). Nine of the patients were girls and 16 of them were boys. Their ages ranged from 6 to 15. Pathological results revealed that there were 16 (1.22%) cases of parasitosis, 3 (0.23%) cases of granulomatosis, 3 (0.23%) cases of eosinophilic appendicitis, 2 (0.15%) cases of carcinoid tumors, and 1 (0.08%) case of appendiceal non-Hodgkin's lymphoma. All patients underwent a standard appendectomy. Uncommon histopathological findings in childhood appendectomy specimens are more common than those in adulthood. This kind of certain unexpected lesions of the appendix may require advanced diagnostics, careful clinical care, follow-up for years, and a multidisciplinary approach. Therefore, histopathological examinations of appendectomy specimens must be performed routinely. PMID:26730070

  6. [CT findings of hypersensitivity pneumonitis].

    PubMed

    Kobayashi, H; Matsuoka, R; Mieno, T; Kitamura, S

    1989-04-01

    CT findings of 22 cases of hypersensitivity pneumonitis (HP) were evaluated on 1 cm slices. All cases were diagnosed by transbronchial lung biopsy and clinical information. The study population included 8 men and 14 women with a mean age of 43 years. The causative antigens were considered to be so-called summer type in 17 cases, air humidifier in 1, pigeon in 1 and paint spray (isocyanate was suspected) in 3. CT examination were performed at a mean of 1.5 weeks after admission. In conclusion, characteristic CT findings of HP include combination of small nodular shadows and slight elevation of lung density. The size of nodular shadows was usually within 1 cm diameter, and their distribution was considered to be a centrilobular pattern, representing alveolitis and granuloma formation in a secondary lobule. It was though that the slight elevation of lung density developed when the disease extended all over the secondary lobule and the nodules developed when the disease was limited to the centrilobular lesion. In most cases, significant changes in proximal bronchi and pulmonary vasculatures could not be detected. The presence of segmental or lobar distribution of the shadows was also suggested. In addition to the typical findings, various other findings were also revealed; irregular shaped dense shadows, subpleural curvilinear shadow and honeycombing formation, especially in chronic cases. These findings have caused some difficulty in distinguishing HP from other interstitial diseases. More precise information can probably be obtained by thin slice CT than by 1 cm slice thicknesses, nevertheless, the standard method of CT should yield a useful diagnostic imaging. PMID:2796055

  7. Atypical CT Findings in Plexiform Ameloblastoma

    PubMed Central

    Binjoo, Nagesh; Modgil, Richa; Negi, Lalit Singh; Kaur, Prabhpreet

    2014-01-01

    Ameloblastoma is an uncommon epithelial odontogenic neoplasm that is nonmineralized, locally aggressive, and, in most cases, benign. Most ameloblastomas develop in the molar-ramus region of the mandible with 70% of them arising in the molar-ramus area. Radiologically they are unilocular or multilocular radiolucency with a honeycomb or soap bubble appearance. The radiographic appearance of ameloblastoma can vary according to the type of tumor. CT is usually helpful in determining the contours of the lesion, its contents, and its extension into soft and hard tissues. Through this case we would bring to light some of the unusual CT findings which include the destruction of the surrounding structures by the lesion which appeared to be normal routine lesion when viewed clinically. PMID:25506456

  8. Keratinous inclusion cyst of oesophagus: unusual finding

    PubMed Central

    Wan Abdul Rahman, Wan Faiziah; Mutum, Samarendra Singh; Fauzi, Mohd Hashairi

    2013-01-01

    Cysts of the oesophagus are unusual findings and they are classified according to the embryological site of origin. It may represent inclusion cysts, retention cysts and developmental cysts. We present a case of keratinous inclusion cyst of the lower oesophagus in a 71-year-old Malay woman who presented with dyspepsia and severe epigastric pain. An oesophago-gastro-duodenoscopy demonstrated a sliding hiatus hernia with whitish ulcer-like lesion at the lower oesophagus. Biopsy from the lesion revealed a keratinous inclusion cyst. The patient was given pantoprazole and put on regular follow-up for monitoring any other development. PMID:23878290

  9. Pycnodysostosis with unusual findings: a case report

    PubMed Central

    Naganoor, Ravi; Patil, Harsha; Thobbi, Achyut Narayan; Ukkali, Sadashiva; Malagi, Naushad

    2009-01-01

    Pycnodysostosis is a rare clinical entity, first described in 1962 by Maroteaux and Lamy. The disease has also been named Toulouse-Lautrec syndrome, after the French artist Henri de Toulouse-Lautrec, who (it has been surmised) suffered from the disease. In 1996, the defective gene responsible for Pycnodysostosis was located, offering accurate diagnosis, carrier testing and a more thorough understanding of this disorder. It is an autosomal recessive osteochondrodysplasia, usually diagnosed at an early age with incidence estimated to be 1.7 per 1 million births. Pycnodysostosis is a lysosomal storage disease of the bone caused by a mutation in the gene that codes the enzyme cathepsin K. The syndrome has been frequently reported in history. This article reports unusual ophthalmologic findings, conductive hearing loss due to suspected otosclerosis and sandal gap deformity in a Pycnodysostosis patient. PMID:19829823

  10. Adrenal cortex dysfunction: CT findings

    SciTech Connect

    Huebener, K.H.; Treugut, H.

    1984-01-01

    The computed tomographic appearance of the adrenal gland was studied in 302 patients with possible endocrinologic disease and 107 patients undergoing CT for nonendocrinologic reasons. Measurements of adrenal size were also made in 100 adults with no known adrenal pathology. CT proved to be a sensitive diagnostic tool in combination with clinical studies. When blood hormone levels are increased, CT can differentiate among homogeneous organic hyperplasia, nodular hyperplasia, benign adenoma, and malignant cortical adenoma. When blood hormone levels are decreased, CT can demonstrate hypoplasia or metastatic tumorous destruction. Calcifications can be demonstrated earlier than on plain radiographs. When hormone elimination is increased, the morphologic substrate can be identified; tumorous changes can be localized and infiltration of surrounding organs recognized.

  11. Unusual endoscopic findings of gastric neuroendocrine tumor.

    PubMed

    Kishi, Kazuhiro; Fujisawa, Akihiko; Horikita, Minoru; Nakai, Yoshihiro; Ooshimo, Kazushi; Kishi, Fumiko; Kimura, Masako; Lin, Chun-Che; Takayama, Tetsuji

    2015-01-01

    Gastric neuroendocrine tumor (NET) is sometimes found as a submucosal tumor on upper gastrointestinal endoscopy. Gastric NET with malignant profile and neuroendocrine carcinoma (NEC) show various forms which are difficult to distinguish from gastric cancer and other disease. We report a case of a cauliflower-shaped NET of the stomach. A 61-year-old man was referred to our hospital with a complaint of abdominal fullness. Upper gastrointestinal endoscopic examination revealed an unusual, whitish cauliflower-shaped tumor that belongs to Borrmann type I on the lesser curvature of the gastric antrum. Histological examination of the biopsy specimen revealed NET G2, because the tumor cells were CD56- and synaptophysin-positive by immunohistochemical analysis. A distal gastrectomy with D2 lymphadenectomy was performed. A recurrence in the liver was revealed by follow up computed tomography after 11 months from operation. Combined chemotherapy with irinotecan (CPT-11) plus cisplatin (CDDP) was treated. The patient achieved a partial response, but he died after 31 months from gastrectomy. There is no independent, large-scaled prospective study and no standard treatment for gastric NETs with distant metastases. Our case is reported with a literature review of the treatment of metastatic gastric NET G2. PMID:26399359

  12. Cytomegalovirus pneumonia in transplant patients: CT findings

    SciTech Connect

    Eun-Young Kang; Patz, E.F. Jr.; Mueller, N.L.

    1996-03-01

    Our goal was to assess the CT findings of cytomegalovirus (CMV) pneumonia in transplant patients. The study included 10 transplant patients who had chest CT scan and pathologically proven isolated pulmonary CMV infection. Five patients had bone marrow transplant and five had solid organ transplant. The CT scans were retrospectively reviewed for pattern and distribution of disease and the CT findings compared with the findings on open lung biopsy (n = 9) and autopsy (n = 1). Nine of 10 patients had parenchymal abnormalities apparent at CT and I had normal CT scans. The findings in the nine patients included small nodules (n = 6), consolidation (n = 4), ground-glass attenuation (n = 4), and irregular lines (n = 1). The nodules had a bilateral and symmetric distribution and involved all lung zones. The consolidation was most marked in the lower lung zones. The CT findings of CMV pneumonia in transplant patients are heterogeneous. The most common patterns include small nodules and areas of consolidation. 13 refs., 4 figs., 1 tab.

  13. Specific CT findings in Krabbe disease

    SciTech Connect

    Kwan, E.; Drace, J.; Enzmann, D.

    1984-09-01

    Specific computed tomography (CT) findings in four patients with biochemically proven Krabbe disease included symmetric increased attenuation in the cerebellum, brainstem, thalami, caudate nuclei, and corona radiata before and in conjunction with decreased attenuation of white matter followed by atrophy at a later stage. Familiarity with the CT findings in the acute phase of Drabbe disease may assist clinicians in limiting the differential diagnosis and requesting appropriate laboratory tests.

  14. CT and US findings of pancreatoblastoma

    SciTech Connect

    Lee, Jae Young; Kim, In-One; Kim, Woo Sun

    1996-05-01

    Our goal was to evaluate US and CT findings of pancreatoblastoma. Three US and four CT scans before surgery and one follow-up CT after surgery were reviewed in four patients (two female, two male) with pathologically proven pancreatoblastoma. The mean age of the patients was 4 years (range 2-5 years). The masses were analyzed for origin, US and CT architecture, presence of calcification, enhancement pattern, and metastatic spread. In two patients, the tumors arose from the pancreatic head and in one patient from the pancreatic tail. The mean largest diameter of the masses was 10 cm, ranging from 5 to 14 cm. Sonography obtained from three cases showed mixed echogenic solid mass. On the CT scan, all tumors were huge, lobulated masses with heterogeneous attenuation. One tumor contained numerous foci of calcification. On the enhanced CT scan, three tumors showed multiloculated appearance by enhancing internal septations. There was no evidence of metastasis to distant organ or abdominal lymph node in any case. We suggest that the most common US finding of pancreatoblastoma is a mixed echogenic, solid mass inseparable from the pancreas, and the most common CT finding is a relatively well defined, lobulated, huge mass with multiloculated appearance by enhancing septae in or near the lesser sac. 9 refs., 4 figs.

  15. Cranial CT findings in patients with meningomyelocele.

    PubMed

    Zimmerman, R D; Breckbill, D; Dennis, M W; Davis, D O

    1979-04-01

    The association between meningomyelocele and various cranial abnormalities, particularly Chiari II malformation is well established. Cranial CT scans in 47 patients with meningomyelocele proved to be a safe and effective method of elucidating the type and extent of anatomic abnormalities associated with this disorder, and evaluating and following the degree of hydrocephalus seen in these patients. Of the 47 patients, 43 (92%) showed CT findings indicative of an abnormally low fourth ventricle, the hallmark finding in Chiari II malformation. In 67% the fourth ventricle was not visualized, and in 25% it was directly visualized in an abnormally caudal position. Other findings included hydrocephalus (85%), a striking and possibly unique heart-shaped psuedomass in the posterior fossa (58%), and abnormal configuration of the lateral ventricles ("vampire bat" configuration). Calvarial abnormalities, in particular lacunar skull, were also noted at CT. PMID:106696

  16. Lumbar spine: pretest predictability of CT findings

    SciTech Connect

    Giles, D.J.; Thomas, R.J.; Osborn, A.G.; Clayton, P.D.; Miller, M.H.; Bahr, A.L.; Frederick, P.R.; O'Connor, G.D.; Ostler, D.

    1984-03-01

    Demographic and symptomatic data gathered from 460 patients referred for lumbosacral CT examinations were analyzed to determine if the prescan probability of normal or abnormal findings could be predicted accurately. The authors were unable to predict the presence of herniated disk on the basis of patient-supplied data alone. Age was the single most significant predictor of an abnormality and was sharply related to degenerative disease and spinal stenosis.

  17. CT Findings in Temporal Bone Osteoradionecrosis

    PubMed Central

    Ahmed, Salmaan; Gupta, Nakul; Hamilton, Jackson D.; Garden, Adam S.; Gidley, Paul W.; Ginsberg, Lawrence E.

    2014-01-01

    Purpose The goal of this study is to describe CT findings in patients with clinically proven temporal bone osteoradionecrosis (TB-ORN). Methods and materials CT scans of twenty patients were retrospectively evaluated for bony and soft tissue abnormalities. Clinical severity was graded based on level of therapy administered: mild (observation), moderate (antibiotics/hyperbaric oxygen), or severe (surgery). Results Radiation dose to the primary tumor ranged from 30 to 75.6 Gy. Time to onset of ORN from completion of radiation therapy was 2 to 22 years (median=7yrs). Clinical findings: Exposed bone=20/20, otorrhea=17/20, hearing loss=11/20, otalgia=10/20, facial nerve paralysis=2/20, gait imbalance=2/20. CT findings: EAC erosions=18/20, mastoid effusion=18/20, mastoid bony coalescence=5/20, enhancing soft tissue=6/20, soft tissue gas=6/20, temporomandibular joint/condylar erosion=3/20. 3 patients developed an abscess. Conclusion Mastoid effusion and EAC erosions are commonly seen with TB-ORN. Clinically moderate or severe cases of TB-ORN are more likely to demonstrate enhancing soft tissue (p=0.002), soft tissue gas (p=0.002), and temporomandibular joint involvement (p=0.07). PMID:24834883

  18. Isovaleric acidaemia: cranial CT and MRI findings.

    PubMed

    Sogut, Ayhan; Acun, Ceyda; Aydin, Kubilay; Tomac, Nazan; Tomsac, Nazan; Demirel, Fatma; Aktuglu, Cigdem

    2004-02-01

    Isovaleric acidaemia is an inborn error of leucine metabolism due to deficiency of isovaleryl-CoA dehydrogenase, which results in accumulation of isovaleric acid in body fluids. There are acute and chronic-intermittent forms of the disease. We present the cranial CT and MRI findings of a 19-month-old girl with the chronic-intermittent form of isovaleric acidaemia. She presented with severe metabolic acidosis, hyperglycaemia, glycosuria, ketonuria and acute encephalopathy. Cranial CT revealed bilateral hypodensity of the globi pallidi. MRI showed signal changes in the globi pallidi and corticospinal tracts of the mesencephalon, which were hypointense on T1-weighted and hyperintense on T2-weighted images. PMID:14534755

  19. Unusual thoracic radiographic findings in children treated for Hodgkin's disease

    SciTech Connect

    Jochelson, M.S.; Tarbell, N.J.; Weinstein, H.J.

    1986-06-01

    Mantle irradiation is often part of the treatment for Hodgkin's disease. Localized pneumonitis and fibrosis are well-known sequelae of this treatment. We report nine patients with unusual thoracic radiographic findings following treatment for Hodgkin's disease. All nine had mediastinal widening. Seven of these patients received combined modality therapy in which prednisone was given with their MOPP. In these seven patients, an increase in mediastinal width developed at the same time as the radiographic changes of radiation pneumonitis. Two patients developed bilateral infiltrates extending beyond the field of radiation to the lung periphery. In one of these patients, a spontaneous pneumomediastinum developed. One patient underwent mediastinal biopsy that revealed inflammatory changes similar to those seen in radiation pneumonitis. All patients either responded to steroids or had spontaneous regression of radiographic abnormalities supporting the presumed diagnosis of treatment related changes. Recognition of these unusual sequelae of mantle irradiation will aid in differentiating them from infection or tumor and lead to prompt, appropriate treatment.

  20. Unusual radiographic finding during routine periodontal maintenance: a case report.

    PubMed

    El-Halaby, Ahmed; Furtado Arajo, Michel V

    2014-04-01

    This case report describes the presence of a radiopaque artifact appearing in multiple intraoral periapical and bitewing radiographs during routine periodontal maintenance, in an edentulous area with a history of a ridge preservation procedure. Clinical examination of the area showed a normal soft tissue appearance. Upon further investigation of the patient's recent past medical history, it was found that the artifact was due to the presence of a dermal filler (Radiesse--Merz Aesthetics, San Mateo, CA), which remained after a facial cosmetic procedure. This unusual finding is an indication that clinicians should consider facial cosmetic dermal fillers as part of the differential diagnosis when unusual radiopaque objects are found during routine dental radiographs. PMID:24937891

  1. Unusual Adrenal and Brain Metastases From Follicular Thyroid Carcinoma Revealed by 131I SPECT/CT.

    PubMed

    Zhao, Zhen; Shen, Guo-hua; Liu, Bin; Kuang, An-ren

    2016-01-01

    The adrenal metastasis from differentiated thyroid carcinoma is uncommon. Metastatic involvement of both adrenal and brain in the same patient from differentiated thyroid carcinoma is rare. Here, we described an unusual case with iodine-avid lung, bone, adrenal, liver, and brain metastases from follicular thyroid carcinoma confirmed by 131I SPECT/CT. The utilization of SPECT/CT in thyroid cancer patients can detect the presence of metastases and also exclude potential false-positive lesions. Our case demonstrates that SPECT/CT is helpful in localizing and confirming metastatic lesions from differentiated thyroid carcinoma in rare and unusual sites. PMID:26018699

  2. [Unusual findings in carbon monoxide-related deaths].

    PubMed

    Hecht, Lars; Dittmann, Volker; Dussy, Franz; Gerlach, Kathrin

    2014-01-01

    The authors present three cases of carbon monoxide poisoning (two suicides and one accident) from the autopsy material of the Institute of Legal Medicine at Basel, which are unusual with regard to the circumstances at the scene of death, the method of suicide and the post-mortem findings: Suicide of a 27-year-old male by burning charcoal in the bathroom, documentation of the suicide and previous attempted suicides on a tablet PC. Suicide of a 27-year-old male by carbon monoxide chemically, produced by dehydration of formic acid with sulphuric acid and inhalation of the gas through a breathing mask. Accidental carbon monoxide poisoning of a 34-year-old male by car exhaust fumes in an open garage. Difficult establishment of the diagnosis in the post-mortem examination due to unspecific colour of livores and varnished fingernails. PMID:25004621

  3. Visceral CT findings associated with Thorotrast.

    PubMed

    Rao, B K; Brodell, G K; Haaga, J R; Whitlatch, S; Chiu, L C

    1986-01-01

    Plain radiography and CT of the abdomen were reviewed in four patients who had undergone angiography with thorium dioxide (Thorotrast). In three patients CT showed irregularly scattered focal punctate collections of Thorotrast in the liver parenchyma, predominantly in the subcapsular zone, associated with areas of low or nonhomogeneous attenuation. These areas of low attenuation were identified on microscopic studies as sites of hepatic fibrosis or neoplasia. Computed tomography identified intrahepatic Thorotrast deposits more definitively than plain radiography. PMID:3944318

  4. Abdominal abscesses with enteric communications: CT findings

    SciTech Connect

    Chintapalli, K.; Thorsen, M.K.; Foley, W.D.; Unger, G.F.

    1983-07-01

    CT examinations of four proven abdominal abscesses with enteric communications are reported. All the patients received oral contrast (3% Gastrografin solution). Three patients recieved rectal contrast. The patient who did not receive rectal contrast had a prior abdominoperineal resection. Contrast material was administered intravenously unless there was a contraindication or a suspected enteric vesical fistula. A representative case is described.

  5. Replacement lipomatosis: CT and MRI findings of a rare renal mass.

    PubMed

    Kocaoglu, M; Bozlar, U; Sanal, H T; Guvenc, I

    2007-11-01

    Replacement lipomatosis of the kidney (RLK) is an advanced form of renal sinus lipomatosis, in which infection, renal calculi and long-standing hydronephrosis are accompanied by renal parenchymal atrophy. The kidneys are usually poor or non-functioning. We present CT and MRI findings of an unusual focal RLK of a 52-year-old male, who was examined with the suspicion of renal malignancy. PMID:17989330

  6. Unusual ectopic pregnancies: sonographic findings and implications for management.

    PubMed

    Ghaneie, Ashkan; Grajo, Joseph R; Derr, Charlotte; Kumm, Todd R

    2015-06-01

    Ectopic pregnancy is a considerable source of morbidity and mortality for women of childbearing age. Improved detection and increased risk factors have led to a dramatic rise in the incidence of ectopic pregnancy in recent years. Early diagnosis is critical for the health of the patient as well as the success rate of future pregnancies. Besides laparoscopy, sonography is the mainstay for evaluating ectopic pregnancy. It is important to understand the sonographic features of ectopic pregnancies, including unusual cases that occur outside the fallopian tube. PMID:26014313

  7. CT findings in ulcerative, granulomatous, and indeterminate colitis

    SciTech Connect

    Gore, R.M.; Marn, C.S.; Kirby, D.F.; Vogelzang, R.L.; Neiman, H.L.

    1984-08-01

    Eight patients with ulcerative colitis, three with colitis indeterminate, and 15 patients with Crohn disease were studied by computed tomography (CT) to establish CT criteria for each disorder in hopes of providing a new diagnostic perspective useful in the radiographic evaluation of inflammatory colitis. The CT findings in ulcerative colitis included thickening of the colon wall, which was characterized by inhomogeneous attenuation and a target appearance of the rectum, and proliferation of perirectal fat. Bowel wall thickening with homogeneous attenuation, fistula and abscess formation, and mesenteric abnormalities were observed in patients with Crohn colitis. Patients with colitis indeterminate showed colonic changes on CT observed in both disorders. Initial experience suggests that CT can differentiate patients with well established ulcerative and Crohn colitis.

  8. FDG PET/CT Findings of Intracardiac Myeloid Sarcoma.

    PubMed

    Niu, Na; Cui, Ruixue; Li, Fang

    2016-03-01

    Myeloid sarcoma is a rare entity, and cardiac involvement is even rarer. We presented here the FDG PET/CT findings of a 66-year-old man with a 3-month history of cough and progressive dyspnea. FDG PET/CT scan demonstrated nonuniform FDG uptake in the cardiac walls and pericardium. Biopsy of the heart revealed myeloid sarcoma. In addition, bone marrow biopsy demonstrated the acute myeloid leukemia. PMID:26505855

  9. Radiation-induced pulmonary change: CT findings

    SciTech Connect

    Libshitz, H.I.; Shuman, L.S.

    1984-02-01

    Four patterns of radiation change in the lung were identified in 53 computed tomographic studies of 41 patients at various times following completion of radiotherapy. (a) The homogeneous pattern shows slight increase in density uniformly involving irradiated portions of lung and is believed to represent a diffuse, minimal radiation pneumonitis. (b) Patchy consolidation is contained within irradiated lung but does not conform to the shape of the radiation field. It is analogous to radiation pneumonitis seen on chest radiographs. (c) Discrete consolidation that conforms to the radiation portal but does not uniformly involve it has several possible analogues. (d) Solid consolidation totally involves the irradiated lung and contains ectatic bronchi within it. This finding is analogous to radiation fibrosis. The temporal sequence and dose relationships of these appearances are discussed and related to those seen with conventional studies.

  10. PET/CT imaging in lung cancer: indications and findings.

    PubMed

    Hochhegger, Bruno; Alves, Giordano Rafael Tronco; Irion, Klaus Loureiro; Fritscher, Carlos Cezar; Fritscher, Leandro Genehr; Concatto, Natlia Henz; Marchiori, Edson

    2015-01-01

    The use of PET/CT imaging in the work-up and management of patients with lung cancer has greatly increased in recent decades. The ability to combine functional and anatomical information has equipped PET/CT to look into various aspects of lung cancer, allowing more precise disease staging and providing useful data during the characterization of indeterminate pulmonary nodules. In addition, the accuracy of PET/CT has been shown to be greater than is that of conventional modalities in some scenarios, making PET/CT a valuable noninvasive method for the investigation of lung cancer. However, the interpretation of PET/CT findings presents numerous pitfalls and potential confounders. Therefore, it is imperative for pulmonologists and radiologists to familiarize themselves with the most relevant indications for and limitations of PET/CT, seeking to protect their patients from unnecessary radiation exposure and inappropriate treatment. This review article aimed to summarize the basic principles, indications, cancer staging considerations, and future applications related to the use of PET/CT in lung cancer. PMID:26176525

  11. PET/CT imaging in lung cancer: indications and findings*

    PubMed Central

    Hochhegger, Bruno; Alves, Giordano Rafael Tronco; Irion, Klaus Loureiro; Fritscher, Carlos Cezar; Fritscher, Leandro Genehr; Concatto, Natália Henz; Marchiori, Edson

    2015-01-01

    The use of PET/CT imaging in the work-up and management of patients with lung cancer has greatly increased in recent decades. The ability to combine functional and anatomical information has equipped PET/CT to look into various aspects of lung cancer, allowing more precise disease staging and providing useful data during the characterization of indeterminate pulmonary nodules. In addition, the accuracy of PET/CT has been shown to be greater than is that of conventional modalities in some scenarios, making PET/CT a valuable noninvasive method for the investigation of lung cancer. However, the interpretation of PET/CT findings presents numerous pitfalls and potential confounders. Therefore, it is imperative for pulmonologists and radiologists to familiarize themselves with the most relevant indications for and limitations of PET/CT, seeking to protect their patients from unnecessary radiation exposure and inappropriate treatment. This review article aimed to summarize the basic principles, indications, cancer staging considerations, and future applications related to the use of PET/CT in lung cancer. PMID:26176525

  12. An unusual aberrant muscle in congenital clubfoot: an intraoperative finding.

    PubMed

    Abo El-Fadl, Sameh Mahmoud

    2013-01-01

    Congenital clubfoot is a common congenital deformity, characterized by equinus of the hindfoot and adduction of the midfoot and forefoot, with varus through the subtalar joint complex. A cavus deformity will also be present. The etiology of this congenital deformity remains elusive. Muscle anomalies are not commonly found in patients with idiopathic clubfoot, and, when present, their significance is not clear. The presence of a flexor digitorum accessorius longus muscle and an accessory soleus muscle found at surgical correction of clubfoot deformity has been previously reported. Our case was a female child, aged 2 years, 3 months, who developed bilateral relapsed congenital clubfoot. She was found to have an unusual aberrant muscle in both legs. This was discovered accidentally during surgical correction of her deformity through posteromedial soft tissue release. This muscle might have contributed to the hindfoot varus and equinus in the clubfoot deformity, because the latter were completely corrected after release of the muscle from its insertion. Awareness of such a new anatomic variant, with the other anatomic variants found in clubfoot deformity, will not only improve our understanding of normal lower limb development, but could also lead to improved genetic counseling and diagnostic and treatment methods of such a common congenital deformity. PMID:23415495

  13. Neoplastic and nonneoplastic conditions of serosal membrane origin: CT findings.

    PubMed

    Jeong, Yeon Joo; Kim, Suk; Kwak, Sang Wook; Lee, Nam Kyung; Lee, Jun Woo; Kim, Kun-Il; Choi, Kyung Un; Jeon, Tae Yong

    2008-01-01

    Computed tomography (CT) is an important imaging modality for diagnosis and follow-up of neoplastic or nonneoplastic conditions of the serosal membrane. The characteristic CT findings of malignant pleural mesothelioma include unilateral pleural effusion, thickening of the mediastinal pleura, and circumferential and nodular pleural thickening of greater than 1 cm. Malignant peritoneal mesothelioma manifests as a large mass or diffuse peritoneal thickening without a definable mass and is difficult to differentiate from peritoneal carcinomatosis or tuberculosis. The imaging features of primary serous papillary carcinoma of the peritoneum resemble those of peritoneal carcinomatosis; however, the ovary is usually of normal size. The possibility of desmoplastic small round cell tumor should be considered in children or young adults with multiple peritoneal masses and no identifiable primary malignancy. The CT findings of secondary tumors include a variable amount of fluid in the serosal cavity, thickening of the serosal lining (irregular and nodular), and serosal implants. Nonneoplastic conditions manifest as focal or diffuse thickening of the serosal membrane, a variable amount of fluid in the serosal cavity, and a soft-tissue mass at CT. Although the CT findings of some of the conditions overlap, knowledge of the typical findings is helpful in narrowing the differential diagnosis. PMID:18480485

  14. Trisomy 2p: Analysis of unusual phenotypic findings

    SciTech Connect

    Lurie, I.W.; Ilyina, H.G.; Gurevich, D.B.

    1995-01-16

    We present three probands with partial trisomies 2p21-23 due to ins(4;2)(q21;p21p23) pat, 2p23-pter due to t(2;4)(p23;q35)mat, and 2p21-pter due to t(2;11)(p21;q23.3)mat. More than 50 cases of partial trisomy 2p have been reviewed and some abnormalities, unusual for most other types of structural autosomal imbalance, have been found in patients with inherited forms of 2p trisomy and in their non-karyotyped sibs. Neural tube defects (anencephaly, occipital encephalocele, and spina bifida) were found in five probands and 4/6 affected non-karyotyped sibs. The only triplicated segment common to all was 2p24. Different forms of {open_quotes}broncho-pulmonary a/hypoplasia{close_quotes} (including two cases of lung agenesis) were described in four patients (overlapping triplicated segment was 2p21-p25). Three patients (with overlapping triplicated segment 2p23-p25) had diaphragmatic hernia. Abnormal rotation of the heart or L-transposition of large vessels (with or without visceral heterotaxia) was found in two infants (overlapping triplicated segment 2p23-p24). In two patients with common triplicated segment 2p22.3-p25, neuroblastoma has been described. The occurrence of all these defects may be explained either by the action of the same gene(s) mapped to 2p24 or by action of some independent factors located in different segments of the short arm. Although the latter hypothesis is much less probable, it can not be rejected at the present time. We propose the existence of a genetic system controlling surveillance of an abnormal embryo to explain the phenotypic differences between patients with the same imbalance within a family. In some {open_quotes}restrictive{close_quotes} combinations the abnormal embryos will die, although in {open_quotes}permissive{close_quotes} combinations they can survive. 47 refs., 2 figs., 3 tabs.

  15. Osteosarcoma of maxilla with unusual image findings in child.

    PubMed

    Yamamoto, Aya; Sakamoto, Junichiro; Muramatsu, Takashi; Hashimoto, Sadamitsu; Shibahara, Takahiko; Shimono, Masaki; Sano, Tsukasa

    2011-01-01

    Osteosarcoma of the head and neck is relatively rare and accounts for less than 10 percent of all osteosarcomas in general. We report a case of osteosarcoma in which imaging and histopathology of the hard palate of an 11-year-old boy yielded atypical findings. An approximately 815mm lesion found in the center of the palate was hard and healthy in color. Subsequent biopsy resulted in a diagnosis of nonepithelial malignant tumor. No abnormalities were observed in the maxillary bone or tooth on panoramic or occlusal radiographs. Computed tomography images revealed a mass lesion approximately 799mm in size on the hard palate extending into the maxilla. The cortex of the maxilla adjacent to the lesion was unclear in parts. The internal structures were slightly inhomogeneous and its density was lower than that of muscle. On magnetic resonance images, the lesion was represented by low signal intensity on T1-weighted (T1W) images and high signal intensity on T2-weighted images with fat-suppression. The margin of the lesion was a little unclear and the internal structures were slightly inhomogeneous. The lesion was enhanced homogeneously on post-contrast T1W images with fat-suppression. The histopathological diagnosis was fibrogenesis-type osteosarcoma. No findings specific to osteosarcoma such as localized enlargement of the periodontal ligament space alongside the root, cortical destruction, periosteal ossification or osteogenesis were found in this case. PMID:22293590

  16. Recurrent pancreatitis after unremarkable colonoscopy, temporalised by CT imaging: an unusual case.

    PubMed

    Limb, Christopher; Ibrahim, Ibrahim A K; Fitzsimmons, Sophie; Harper, Ashton J

    2016-01-01

    Acute pancreatitis is a common surgical presentation, frequently caused by gallstones and alcohol. Here we present an unusual case of a recurrent episode of pancreatitis after an unremarkable colonoscopy, in a patient with several pre-existing risk factors for pancreatitis. Before and after abdominal CT scans clearly demonstrate the acute inflammatory process affecting the pancreas and temporalise its development. Early resuscitation and appropriate involvement of high dependency care is advocated by all current guidelines to improve patient outcome. We consider possible aetiology and how early diagnosis and recognition of possible high-risk situations can expedite its investigation and management, helping to provide the best possible care. PMID:26746831

  17. CT of lumbar spine disk herniation: correlation with surgical findings

    SciTech Connect

    Firooznia, H.; Benjamin, V.; Kricheff, I.I.; Rafii, M.; Golimbu, C.

    1984-03-01

    Computed tomography (CT) of the lumbar spine was performed with selectively positioned 5-mm-thick axial cross sections to examine each disk level from the top of the neural foramen to the pedicle of the next caudad vertebra. One hundred consecutive patients with 116 surgical disk explorations were reviewed. There was agreement between the CT and surgical findings in 89 patients (104 explorations) in determination of presence or absence of a herniated nucleus pulposus (HNP). Discrepancy occurred in 12 instances (11 patients): two because of incorrect interpretations, five in previously operated patients, three in spondylolisthesis, and two in spinal stenosis. There were 97 true-positives, eight false-negatives, seven true-negatives, and four false-positives. If nine previously operated patients are excluded from the study, then CT was accurate in detection of presence or absence of an HNP in 93% of the disk explorations.

  18. [Unusual findings in a death caused by a car fire].

    PubMed

    Bohnert, Michael; Schmidt, Ulrike; Werp, Jrgen; Simon, Karl-Heinz

    2007-01-01

    Witnesses detected a burning car in the parking lot next to a discotheque in the early morning hours. After the fire had been extinguished, the charred body of the 23-year-old car owner was found in the driver's seat. The young man had been a guest of the discotheque the previous night and consumed plenty of alcoholic drinks. The traces left by the fire on the car suggested that the fire had started in the passenger compartment. At autopsy, greyish-brown discoloration and induration of the mucosa of the respiratory tract were found in addition to massive aspiration of soot and signs of soot swallowing. The macroscopic and histological findings pointed to a chemical burn of the airways probably caused by chlorine gases developing when the covering of the passenger compartment was burning. Chemical burns due to inhalation, aspiration and swallowing of soot are all signs of vitality, so that a smoldering fire must have gone on for a while inside the car with the windows closed. The most probable cause of the fire is that clothing or textile material in the car was set on fire by a burning cigarette. PMID:17380939

  19. A Case of Severe Sepsis Presenting Marked Decrease of Neutrophils and Interesting Findings on Dynamic CT

    PubMed Central

    Makino, Isamu; Tajima, Hidehiro; Kitagawa, Hirohisa; Nakagawara, Hisatoshi; Miyashita, Tomoharu; Nakanuma, Shinichi; Hayashi, Hironori; Takamura, Hiroyuki; Fushida, Sachio; Ohta, Tetsuo

    2015-01-01

    Patient: Male, 60 Final Diagnosis: Sepsis Symptoms: Fever shock Medication: Sivelestat sodium hydrate Clinical Procedure: PMX-DHP CHDF Specialty: Infectious Diseases Objective: Unusual clinical course Background: In a patient with severe sepsis, we sometimes observe immediate decrease of the counts of white blood cells (WBCs) and neutrophils, which is known as an indicator for poor prognosis. We observed marked decrease of white blood cells and neutrophils on blood examination and interesting findings on dynamic CT. Here, we present the case of a patient with severe postoperative sepsis occurring after major abdominal surgery and we discuss the mechanism of such clinical presentations. Case Report: A 60-year-old man received pancreatoduodenectomy with colectomy for pancreatic cancer. He developed a high fever on postoperative day 3. We observed marked decrease of WBCs and neutrophils on blood examination. We also observed slight swelling of the liver, inhomogeneous enhancement of liver parenchyma in arterial phase, and periportal low density in the Glisson capsule in portal phase, without any findings indicating infectious complications on dynamic CT. WBCs and neutrophils increased above normal range in just 6 hours. Blood culture examination performed while the patient had a high fever was positive for Aeromonas hydrophila. After receiving intensive care, he promptly recovered from severe sepsis. The CT findings disappeared on second dynamic CT examination performed 3 days after the first examination. Conclusions: We treated a patient with severe sepsis after major abdominal surgery who presented very rapid change of the counts of WBCs and neutrophils and interesting CT findings in the liver. We rescued him from a critical situation by prompt and intensive treatment. Research is needed to accumulate and analyze data from more patients who present a similar clinical course to better understand their pathophysiological conditions. PMID:26020838

  20. Traumatic optic neuropathy: facial CT findings affecting visual acuity.

    PubMed

    Reddy, Ramachandra P; Bodanapally, Uttam K; Shanmuganathan, Kathirkamanathan; Van der Byl, Giulia; Dreizin, David; Katzman, Lee; Shin, Robert Kang

    2015-08-01

    The purpose of this study was to determine the relationship between admission visual acuity (VA) and facial computed tomographic (CT) findings of traumatic optic neuropathy (TON). We retrospectively evaluated CT findings in 44 patients with TON. Mid-facial fractures, extraconal and intraconal hematomas, hematomas along the optic nerve and the posterior globe, optic canal fracture, nerve impingement by optic canal fracture fragment, and extraconal and intraconal emphysema were evaluated. CT variables of patients with and without available VA were compared. VA was converted into logarithm of the minimum angle of resolution (logMAR) to provide a numeric scale for the purpose of statistical analysis. The risk factors related to poor VA on univariate analysis were as follows: intraconal hematoma [median logMAR -4.7 versus -1.15, p?=?0.016] and hematoma along the optic nerve [median -4.7 versus -1.3, p?=?0.029]. Intraconal hematoma was the best predictor of poor VA (coefficient, 1.01; SE, 0.34; and p?=?0.008). Receiver operating characteristic (ROC) curve analysis showed that the presence of intraconal hematoma and hematoma along the optic nerve predicted poor VA (logMAR of -3.7 or lower) with an area under the curve of 0.8 and 0.85, respectively. TON patients at higher risk of severe visual impairment may be identified based on admission facial CT. PMID:25563705

  1. Unusual histopathological findings in appendectomy specimens: A retrospective analysis and literature review

    PubMed Central

    Akbulut, Sami; Tas, Mahmut; Sogutcu, Nilgun; Arikanoglu, Zulfu; Basbug, Murat; Ulku, Abdullah; Semur, Heybet; Yagmur, Yusuf

    2011-01-01

    AIM: To document unusual findings in appendectomy specimens. METHODS: The clinicopathological data of 5262 patients who underwent appendectomies for presumed acute appendicitis from January 2006 to October 2010 were reviewed retrospectively. Appendectomies performed as incidental procedures during some other operation were excluded. We focused on 54 patients who had unusual findings in their appendectomy specimens. We conducted a literature review via the PubMed and Google Scholar databases of English language studies published between 2000 and 2010 on unusual findings in appendectomy specimens. RESULTS: Unusual findings were determined in 54 (1%) cases by histopathology. Thirty were male and 24 were female with ages ranging from 15 to 84 years (median, 32.2 ± 15.1 years). Final pathology revealed 37 cases of enterobiasis, five cases of carcinoids, four mucinous cystadenomas, two eosinophilic infiltrations, two mucoceles, two tuberculosis, one goblet-cell carcinoid, and one neurogenic hyperplasia. While 52 patients underwent a standard appendectomy, two patients who were diagnosed with tuberculous appendicitis underwent a right hemicolectomy. All tumors were located at the distal part of the appendix with a mean diameter of 6.8 mm (range, 4-10 mm). All patients with tumors were alive and disease-free during a mean follow-up of 17.8 mo. A review of 1366 cases reported in the English literature is also discussed. CONCLUSION: Although unusual pathological findings are seldom seen during an appendectomy, all appendectomy specimens should be sent for routine histopathological examination. PMID:21528073

  2. Brain CT-Scan Findings in Unconscious Patients after Poisoning.

    PubMed

    Taheri, Morteza Sanei; Noori, Maryam; Shakiba, Majid; Jalali, Amir Hossein

    2011-03-01

    The aim of this study was to identify and describe brain CT findings in patients with poisoning or drug overdose and altered mental status. In this study, 403 patients with some degree of loss of consciousness who referred due to poisoning or drug overdose were evaluated by brain CT. The most common cause of intoxication was suicide. Intoxication status was determined by the physician and was mainly based on a history of intoxication, positive toxicologic screen result, or physical evidence suggesting intoxication. Among 403 unconscious patients, 229 patients who were ingested or inhaled Benzodiazepine, Carbamazepine, Carbon Monoxide, Ethanol, Methanol, Opium, Tricyclic antidepressants, and Tramadol included in the study. Others had used multiple drugs and/or toxins, or their intoxication was unknown. Mean age of patients was 37.6 17.7 years (14-95). Among them, 181 (79%) were male. Among all patients, 92 had consumed opium (40.2%), 47 had consumed Benzodiazepines (20.5%) and other patients had been overdosed by other drugs or exposed to other poisonous agents. Totally 38 (16.5%) patients had abnormal CT findings. These included 10 cases of infarction, four cases of hemorrhage, two cases of herniation, 13 cases of edema, and 10 cases of basal ganglia changes (including 9 cases of hypodensity and one case of hypodensity with hemorrhage). A good knowledge of the CT findings in unconscious patients due to poisoning or drug overdose seems to be necessary for radiologists and clinicians. This study is unique in that it reported most of the radiological findings in these patients. PMID:23675213

  3. Unusual histopathological findings in appendectomy specimens from patients with suspected acute appendicitis

    PubMed Central

    Yilmaz, Mehmet; Akbulut, Sami; Kutluturk, Koray; Sahin, Nurhan; Arabaci, Ebru; Ara, Cengiz; Yilmaz, Sezai

    2013-01-01

    AIM: To investigate the prevalence and implications of unusual histopathological findings in appendectomy specimens from patients with suspected acute appendicitis. METHODS: The demographic and histopathological data of 1621 patients (≥ 16 years-old) who underwent appendectomy to treat an initial diagnosis of acute appendicitis between January 1999 and November 2011 were retrospectively assessed. Microscopic findings were used to classify the patients under six categories: appendix vermiformis, phlegmonous appendicitis, gangrenous appendicitis, perforated appendicitis, supurative appendicitis, and unusual histopathologic findings. The demographic and clinicopathologic characteristics of patients with unusual histopathologic findings were evaluated in detail, and re-analysis of archived resected appendix specimens was carried out. RESULTS: A total of 912 males and 709 females, from 16 to 94 years old, were included in the study and comprised 789 cases of suppurative appendicitis, 370 cases of appendix vermiformis, 243 cases of perforated gangrenous appendicitis, 53 cases of flegmaneous appendicitis, 32 cases of gangrenous appendicitis, and 134 (8.3%) cases of unusual histopathological findings. The unusual histopathological findings included fibrous obliteration (n = 62), enterobius vermicularis (n = 31), eosinophilic infiltration (n = 10), mucinous cystadenoma (n = 8), carcinoid tumor (n = 6), granulomatous inflammation (n = 5), adenocarcinoma (n = 4; one of them mucinous), and mucocele (n = 3), adenomatous polyp (n = 1), taenia sup (n = 1), ascaris lumbricoides (n = 1), appendiceal diverticula (n = 1), and B cell non-hodgkin lymphoma (n = 1). None of the 11 patients with subsequent diagnosis of tumor were suspected of cancer prior to the appendectomy. CONCLUSION: Even when the macroscopic appearance of appendectomy specimens is normal, histopathological assessment will allow early diagnosis of many unusual diseases. PMID:23840147

  4. Imaging Findings of an Unusually Located Hydatid Cyst Presented as a Sacrococcygeal Mass

    PubMed Central

    Yilmaz, Guliz; Halil Akpinar, Suha

    2015-01-01

    Hydatid disease (HD) is a parasitic infection that is most commonly caused by the larval stage of Echinococcus granulosus. Unusual location for this disease can cause diagnostic and therapeutic problems. We herein report a case of sacrococcygeal HD at an unusual location in a 30-year-old woman. She was evaluated using computed tomography (CT) imaging and magnetic resonance imaging (MRI) after the demonstration of the lucent bone lesion on plain pelvic radiography. There was an expansile lytic mass without contrast enhancement suggesting a cystic mass in the sacrococcygeal region. Medical history revealed that she had undergone surgery for liver HD and the serological test results were diagnostic for HD. In light of this, no surgery was carried out for this cystic mass and she was followed with the diagnosis of sacrococcygeal HD. PMID:25901257

  5. Renal infarction: CT diagnosis and correlation between CT findings and etiologies

    SciTech Connect

    Wong, W.S.; Moss, A.A.; Federle, M.P.; Cochran, S.T.; London, S.S.

    1984-01-01

    The CT scans and the clinical records of 12 patients who had renal infarction were reviewed. The renal infarcts were classified as either focal or global. The CT findings were correlated with the etiologies of renal infarction. Embolism was the most common cause of renal infarcts that were multifocal with involvement of both kidneys. Trauma caused a unilateral global type of infract. A case of sickle cell anemia presented with multiple ''slit-like'' focal infarcts and enlarged kidneys. Forty-seven per cent of infarcts demonstrated the cortical rim sign, 11% were acapsular fluid collection, and 6% had an abnormally thickened renal fascia.

  6. Ischemic and hemorrhagic moyamoya disease in adults: CT findings

    PubMed Central

    Xie, Anming; Luo, Li; Ding, Yaojun; Li, Gongjie

    2015-01-01

    Objective: To investigate the findings of adult moyamoya disease (MD) of different types on plain CT, brain perfusion CT (CTP) and brain CT angiography (CTA). Materials and methods: A total of 48 patients with ischemic MD and hemorrhagic MD were recruited into present study, and findings were collected from plain CT, CTP and CTA. Results: The incidence of watershed or cortex stroke in ischemic MD (55.6% and 38.9%) was higher than in hemorrhagic MD (0%). The incidence of ventricle or basal ganglia stroke in hemorrhagic MD (40.0%, 43.3%) was higher than in ischemic MD (0%, 5.6%). CTP showed hypoperfusion in 11 patients, hyperperfusion in 12 and normal perfusion in 25. Ischemic MD patients were more likely to present hypoperfusion (61.1%; normal perfusion: 22.2%; hyperperfusion: 16.7%). Hemorrhagic MD patients were more likely to present normal perfusion (70%; hyperperfusion: 30%; hypoperfusion: 0%). The incidence of grade II MD in ischemic MD (27.8%) was higher than in hemorrhagic MD (6.7%). The incidences of grade IV and V MD in hemorrhagic MD (33.3% and 16.7%) were higher than in ischemic MD (16.7% and 11.0%). Conclusion: Hemorrhagic MD is dominant in adults with MD and stroke of these patients mainly occurs at the intraventricular space and basal ganglia. Ischemic MD in adults is characterized by hypoperfusion and hemorrhagic MD by normal perfusion on CTP. MD in adults is usually classified as grade II, III or IV on CTA. PMID:26885076

  7. Unusual Radiologic Finding of Intracranial Inflammatory Myofibroblastic Tumor Presenting a Cyst with Mural Nodule

    PubMed Central

    Park, Jong-Heok; Chung, Dong-Sup

    2015-01-01

    An intracranial cyst tumor with a mural nodule can be representative of some types of brain tumors, but is a rare presentation of intracranial inflammatory myofibroblastic tumor (IMT). Herein, we report the case of an intracranial IMT in a 48-year-old woman presenting with the extremely unusual radiologic findings of a cyst with a mural nodule. PMID:26605272

  8. Eosinophilic Otitis Media: CT and MRI Findings and Literature Review

    PubMed Central

    Chung, Won Jung; Lim, Hyun Kyung; Yoon, Tae Hyun; Cho, Kyung Ja; Baek, Jung Hwan

    2012-01-01

    Eosinophilic otitis media (EOM) is a relatively rare, intractable, middle ear disease with extremely viscous mucoid effusion containing eosinophils. EOM is associated with adult bronchial asthma and nasal allergies. Conventional treatments for otitis media with effusion (OME) or for chronic otitis media (COM), like tympanoplasty or mastoidectomy, when performed for the treatment of EOM, can induce severe complications such as deafness. Therefore, it should be differentiated from the usual type of OME or COM. To our knowledge, the clinical and imaging findings of EOM of temporal bone are not well-known to radiologists. We report here the CT and MRI findings of two EOM cases and review the clinical and histopathologic findings of this recently described disease entity. PMID:22563277

  9. Melanotic Neuroectodermal Tumour of Infancy: CT and MR Findings

    PubMed Central

    Haque, Saira; McCarville, M Beth; Sabire, Neil; McHugh, Kieran

    2012-01-01

    Melanotic neuroectodermal tumour of infancy (MNTI) is a rare neoplasm of neural crest origin. It is benign but locally aggressive and tends to occur most often during the first few months of life. It has a predilection for the head and neck region, particularly for the maxilla. Presence of melanin in this tumour is said to give it distinct clinicopathological, immunohistochemical, ultrastructural and imaging features [1]. We describe five further cases of MNTI, with an emphasis on computed tomography (CT) and magnetic resonance (MR) imaging findings, which have yet to be clearly described in the available radiological literature for this tumour. PMID:22430481

  10. Unusual Finding of Vertebral Artery Fenestration in Spontaneous Deep Nuclear Hemorrhage

    PubMed Central

    Bhattarai, Binod; Munakomi, Sunil; Chaudhary, Pramod

    2016-01-01

    Vertebral artery fenestration is accidentally detected during angiography or autopsy. Spontaneous deep nuclear hemorrhage in association with vertebral artery fenestration is a very unusual finding in angiography. Such an unusual finding has not been reported in the English literature. Here, we report two cases of spontaneous deep nuclear hemorrhage that presented with features of raised intracranial pressure. Computed tomography revealed a deep nuclear acute bleed in both cases. Digital subtraction angiographic findings were normal other than the presence of a long segment vertebral artery fenestration. Both extracranial and intracranial variations were detected. Although the existence of vascular fenestration in the vertebrobasilar system produces less clinical importance, it may influence the management of cervical and intracranial pathologies to avoid iatrogenic injury.

  11. CT and MR Imaging Findings of Pancreatic Paragangliomas

    PubMed Central

    Liang, Wenjie; Xu, Shunliang

    2016-01-01

    Abstract Previous studies on pancreatic paraganglioma, a rare neoplasm, have primarily reported its ultrasound and routine and contrast-enhanced computed tomography (CT) findings. To our knowledge, we are the first to report the contrast-enhanced magnetic resonance imaging (MRI) and diffusion-weighted imaging (DWI) sequence findings of pancreatic paraganglioma. A male patient, ages 41 years, was admitted to our hospital due to a pancreatic space-occupying lesion that had been present for more than 10 days. The patient had no obvious discomfort. He had a history of hypertension and hyperthyroidism. Physical examination revealed upper abdominal tenderness without a palpable mass. Routine and contrast-enhanced abdominal CT showed a soft tissue mass at the pancreatic head/uncinate process, with patchy calcification within the lesion. On a contrast-enhanced CT scan, severe enhancement of the mass in the arterial phase was noted, as was slightly reduced but still marked enhancement in the venous phase. The celiac trunk and superior mesenteric artery segment were wrapped by the tumor. Thickened, tortuous vessels were observed at the lesion edges, around which there were multiple enlarged lymph nodes. The main pancreatic duct was markedly dilated. Routine and contrast-enhanced pancreatic MRI demonstrated an abnormal nodular signal in the pancreatic head/uncinate process that was approximately 4.3 × 6.4 cm2 in size. T1-weighted imaging (T1WI) revealed hypointensity, whereas T2-weighted imaging (T2WI) revealed nonhomogeneous, slight hyperintensity. Patchy hypointensity on both T1WI and T2WI was observed within the lesion. DWI showed slight hyperintensity. Grossly heterogeneous enhancement of the mass was observed on a contrast-enhanced MRI scan, with the tumor wrapped around the adjacent vasculature, and multiple enlarged lymph nodes were observed peripherally. After preoperative preparation, the patient underwent pancreatoduodenectomy. Histopathology and immunohistochemistry of the resected tumor indicated pancreatic paraganglioma. After surgery, the patient recovered well, without presenting any recurrence or metastasis during short-term follow-up. For hypervascular pancreatic tumors on contrast-enhanced CT or MRI, and particularly those occurring in the pancreatic head, with a clear display of draining veins, the possibility of pancreatic paraganglioma should be considered. These tumors usually exhibit necrosis or cystic changes and are occasionally accompanied by calcification. PMID:26945413

  12. Usual and unusual MRI findings of ovarian fibroma: correlation with pathologic findings.

    PubMed

    Kitajima, Kazuhiro; Kaji, Yasushi; Sugimura, Kazuro

    2008-01-01

    Ovarian fibromas typically exhibit low signal intensity on T(2)-weighted images, which reflects their abundant fibrocollagenous stroma. However, the mass of larger tumors often demonstrates high signal intensity on T(2)-weighted images, which reflects varied degenerative changes, such as cystic degeneration, edematous change, hemorrhagic infarction, or necrosis caused by torsion and myxomatous change. We illustrate typical and atypical magnetic resonance (MR) imaging findings of ovarian fibromas and correlate them with histopathologic findings. PMID:18460848

  13. Pulmonary coccidioidomycosis: pictorial review of chest radiographic and CT findings.

    PubMed

    Jude, Cecilia M; Nayak, Nita B; Patel, Maitraya K; Deshmukh, Monica; Batra, Poonam

    2014-01-01

    Pulmonary coccidioidomycosis is a fungal disease endemic to the desert regions of the southwestern United States, Mexico, Central America, and South America. The incidence of reported disease increased substantially between 1998 and 2011, and the infection is encountered beyond the endemic areas because of a mobile society. The disease is caused by inhalation of spores of Coccidioides species. Individuals at high risk are those exposed to frequent soil aerosolization. The diagnosis is established by direct visualization of mature spherules by using special stains or cultures from biologic specimens. Serologic testing of anticoccidioidal antibodies is used for diagnosis and treatment monitoring. The infection is self-limited in 60% of cases. When the disease is symptomatic, the lung is the primary site of involvement. On the basis of clinical presentation and imaging abnormalities, pulmonary involvement is categorized into acute, disseminated, and chronic forms, each with a spectrum of imaging findings. In patients with acute disease, the most common findings are lobar or segmental consolidation, multifocal consolidation, and nodules. Adenopathy and pleural effusions are also seen, usually in association with parenchymal disease. Disseminated disease is rare and occurs in less than 1% of patients. Pulmonary findings are miliary nodules and confluent parenchymal opacities. Acute respiratory distress syndrome is an infrequent complication of disseminated disease. The acute findings resolve in most patients, with chronic changes developing in approximately 5% of patients. Manifestations of chronic disease include residual nodules, chronic cavities, persistent pneumonia with or without adenopathy, pleural effusion, and regressive changes. Unusual complications of chronic disease are mycetoma, abscess formation, and bronchopleural fistula. Patients in an immunocompromised state, those with diabetes mellitus, pregnant women, and those belonging to certain ethnic groups may show severe, progressive, or disseminated disease. PMID:25019431

  14. Three rounds as "tandem bullets": unusual findings in a case of a suicidal gunshot to the head.

    PubMed

    Tattoli, Lucia; Schmid, Simone; Tsokos, Michael

    2014-12-01

    We report an unusual case of suicide in which three 7.65 caliber projectiles were found in the single gunshot wound to the head of a 53-year-old man. Based on data collected at the death scene, CT scan, autopsy findings, and ballistics analysis, the events were reconstructed as follows: two 7.65 mm rounds had already been fired from the 9 mm Makarov pistol the subject was using but, being a smaller caliber, the cartridges had slipped forward and lodged within the barrel. When a third 7.65 mm cartridge was chambered and the gun fired for the third time, the nose of the last bullet hit the lodged bullets and all three rounds were propelled out of the muzzle in tandem as a single shot. Ballistic investigations confirmed that the kinetic energy of the three tandem bullets would have been sufficient to perforate the skull. In cases of gunshot wounds where the manner of death is unclear, a number of well-described circumstantial parameters, such as an atypical anatomical location of the gunshot, unusual firearm, or ammunition, as well as ambiguous autopsy findings, can raise doubts about the manner of death. In very rare cases, despite a single entrance wound, two or more bullets are recovered from the body, fired by the same weapon at the same time (the so-called "tandem bullet" phenomenon). Injuries by "tandem bullets" have crucial implications in gunshot deaths because of the mismatch between the number of entrance and exit wounds and the number of bullets found in or near the body. PMID:25091600

  15. Wassel's Type V Polydactyly with Plain Radiographic and CT Findings

    PubMed Central

    Mete, Berna Dirim; Altay, Canan; Gursoy, Merve; Oyar, Orhan

    2015-01-01

    Duplication of the thumb is the most common polydactyly of the hand. Wassel's classification is frequently used to classify the polydactyly of the hand. His classification was based on the level of duplication and the number of bones in the thumb, and has seven groups (Types IVII) according to the level of the bifurcation, except for his Type VII. The most common type is the bifurcation at the metacarpophalangeal joint (Type IV). In this paper, we report a very rare case of Type V thumb polydactyly in a 42-year-old man, who presented with swan neck deformity of the radial thumb and discuss the plain radiography and computed tomography (CT) findings. Kumar recently reported plain radiography findings in a case of bifid first metacarpal in a 13-year-old girl, who presented with swan neck deformity of the left thumb. To our knowledge, our case is the second presented case that has a swan neck deformity with bifid metacarpal. PMID:25861550

  16. Automatically Pairing Measured Findings across Narrative Abdomen CT Reports

    PubMed Central

    Sevenster, Merlijn; Bozeman, Jeffrey; Cowhy, Andrea; Trost, William

    2013-01-01

    Radiological measurements are one of the key variables in widely adopted guidelines (WHO, RECIST) that standardize and objectivize response assessment in oncology care. Measurements are typically described in free-text, narrative radiology reports. We present a natural language processing pipeline that extracts measurements from radiology reports and pairs them with extracted measurements from prior reports of the same clinical finding, e.g., lymph node or mass. A ground truth was created by manually pairing measurements in the abdomen CT reports of 50 patients. A Random Forest classifier trained on 15 features achieved superior results in an end-to-end evaluation of the pipeline on the extraction and pairing task: precision 0.910, recall 0.878, F-measure 0.894, AUC 0.988. Representing the narrative content in terms of UMLS concepts did not improve results. Applications of the proposed technology include data mining, advanced search and workflow support for healthcare professionals managing radiological measurements. PMID:24551406

  17. An unusual place to find a lost needle in laparoscopic surgery.

    PubMed

    Al Jaafari, F; Christofides, A G; Bell, C R W; Beatty, J D

    2014-09-01

    Losing a needle during laparoscopic surgery is an uncommon but potentially challenging scenario for the surgeon. The prolonged operative time to search for a small retained foreign body such as a needle can cause clinical and medicolegal complications. As a result, it is considered a 'never event'. This report describes a case of a lost needle during a laparoscopic prostatectomy, when a meticulous and systematic search for the foreign body was initiated and completed with the use of x-rays, only to find it in an unusual place. PMID:25198959

  18. Nuances of the unenhanced abdominal CT: careful inspection discloses critical findings.

    PubMed

    Mitchell, Charles H; Fishman, Elliot K; Johnson, Pamela T

    2015-10-01

    Patients who have unenhanced abdominal CT scans are often critically ill. The unenhanced CT may reveal many unsuspected subtle abnormalities in the lower chest, abdomen, and pelvis and accordingly warrants careful attention. This article reviews unenhanced CT findings in the setting of pulmonary embolus, acute aortic syndromes, mesenteric and deep venous thrombosis, gastrointestinal hemorrhage, pancreatitis and its complications, as well as pyelonephritis. PMID:25876836

  19. Pulmonary Tuberculosis Confirmed by Percutaneous Transthoracic Needle Biopsy: Analysis of CT Findings and Review of Correlations with Underlying Lung Disease

    PubMed Central

    Choo, Ji Young; Lee, Ki Yeol; Kim, Mi-young; Kang, Eun-young; Oh, Yu Whan; Lee, Seung Hwa; Seo, Bo Kyung; Je, Bo Kyung

    2014-01-01

    Background: Pulmonary tuberculosis (TB) can produce unusual radiographic findings. Further, negative sputum and bronchoscopic results are common. Early diagnosis is equally as significant as treatment in the reduction of morbidity and mortality associated with pulmonary TB. Aims: The aim of this study was to assess computed tomography (CT) findings of pulmonary TB, confirmed via percutaneous transthoracic needle biopsy (PTNB), and to correlate these findings with coexisting, underlying, lung diseases if present. Study Design: Cross sectional study. Methods: We selected eighty-four patients who were diagnosed with pulmonary TB by way of PTNB. Initially, acid-fast bacilli smear test results from these patients were negative. CT findings were reviewed to detect the presence of parenchymal abnormalities as follows: nodule(s) (<3 cm in diameter), mass (any masses ?3 cm), daughter nodules, air-space consolidation, cavitation, calcification, lymphadenopathy, mediastinal lymphadenopathy, and associated lung parenchymal disease. Results: The CT findings of pulmonary TB confirmed by PTNB included nodules in 44 of 84 (52.4%) cases; 15 of these 44 cases (34.1%) had daughter nodules. The second most common finding was masses in 24 cases (28.6%), nine of which also had daughter nodules. 16 cases (19.0%) displayed nonsegmental consolidation. Of these 16 cases, four had coexisting usual interstitial pneumonia; four others had emphysema. Two patients with a mass had underlying pneumoconiosis. Conclusion: Nodules or a mass mimicking lung cancer were the most common findings on CT scans in patients with pulmonary TB, confirmed via PTNB. The second most common finding was airspace consolidation. Therefore, PNTB is useful for the accurate diagnosis of pulmonary TB in the following cases: airspace consolidation or mass associated with underlying usual interstitial pneumonia, emphysema mimicking lung malignancy or cases of bacterial pneumonia. PMID:25625018

  20. Proteus syndrome: high-resolution CT and CT pulmonary densitovolumetry findings.

    PubMed

    Irion, Klaus L; Hocchegger, Bruno; Marchiori, Edson; Holemans, John A; Smith, Rupert A; Raja, Ramesh C; Singanayagam, Selvadurai

    2009-02-01

    Cystic transformation of the lungs in Proteus syndrome is considered an important manifestation of this disease. We describe a case of an 11-year-old girl with a diagnosis of Proteus syndrome with lung involvement. Low-dose multidetector computed tomography (CT) revealed extensive diffuse cystic lung disease with left lung predominance, affecting mostly the lower lung zones. The cystic lesions had various sizes and variable wall thickness. Postprocessing using CT histogram densitometric volumetry software (CT densitovolumetry), using the threshold -950 Houndsfield units (HU) for quantifying emphysema, revealed that 31% of her total lung volume was composed of areas with CT attenuation values below -950 HU. PMID:19242304

  1. CT and MRI of aortic coarctation: pre- and postsurgical findings.

    PubMed

    Karaosmanoglu, Ali Devrim; Khawaja, Ranish Deedar Ali; Onur, Mehmet Ruhi; Kalra, Mannudeep K

    2015-03-01

    OBJECTIVE. The purpose of this article is to summarize the roles of CT and MRI in the diagnosis and follow-up of patients with aortic coarctation. CONCLUSION. Aortic coarctation is a common congenital heart disease accounting for approximately 6-8% of congenital heart defects. Despite its deceptively simple anatomic presentation, it is a complex medical problem with several associated anatomic and physiologic abnormalities. CT and MRI may provide very accurate information of the coarctation anatomy and other associated cardiac abnormalities. PMID:25714305

  2. Primary Cardiac Lymphoma: Helical CT Findings and Radiopathologic Correlation

    SciTech Connect

    Marco de Lucas, Enrique Pagola, Miguel Angel; Fernandez, Fidel; Lastra, Pedro; Delgado, M. Luisa Ruiz; Sadaba, Pablo; Pinto, Jesus; Ballesteros, Ma Angeles; Ortiz, Antonio

    2004-03-15

    Primary tumors of the heart are extremely rare.Clinical manifestations are nondiagnostic and the patients are often misdiagnosed. Magnetic resonance imaging and echocardiography are standard in this diagnostic workup. We report a case of a man with acromegaly, dysphagia, chest pain and weight loss. An invasive cardiac mass was diagnosed by helical-CT. Autopsy demonstrated a B-cell aggressive lymphoma.

  3. Non-severe pulmonary embolism: prognostic CT findings.

    PubMed

    Moroni, Anne-Line; Bosson, Jean-Luc; Hohn, Nolie; Carpentier, Franoise; Pernod, Gilles; Ferretti, Gilbert R

    2011-09-01

    The goal of this study was to retrospectively evaluate CT cardiovascular parameters and pulmonary artery clot load score as predictors of 3-month mortality in patients with clinically non-severe pulmonary embolism (PE). We included 226 CT positive for PE in hemodynamically stable patients (112 women; mean age 67.1 years 16.9). CT were independently reviewed by two observers. Results were compared with occurrence of death within 3 months using Cox regression. Twenty-four (10.6%) patients died, for whom 9 were considered to be due to PE. Interobserver agreement was moderate for the shape of interventricular septum (? = 0.41), and for the ratio between the diameters of right and left ventricle (RV/LV) (? = 0.76). Observers found no association between interventricular septum shape and death. A RV/LV diameter ratio >1 was predictive of death (OR, 3.83; p < 0.01) only when we also took into account the value of the embolic burden (< 40%). In a multivariate model, CT cardiovascular parameters were not associated with death. Concomitant lower limb DVT and comorbid conditions were important predictors of death. In clinically non-severe PE, a RV/LV diameter ratio >1 is predictive of death when the embolic burden is low (< 40%). PMID:20403673

  4. Unusual benign solid neoplasms of the kidney: cross-sectional imaging findings

    PubMed Central

    Karaosmano?lu, Ali Devrim; Onur, Mehmet Ruhi; Shirkhoda, Ali; Ozmen, Mustafa; Hahn, Peter F.

    2015-01-01

    Kidney neoplasms are common diseases with varying prognoses depending on the subtype of the tumor. The most common solid lesion of the kidney is renal cell carcinoma, and the treatment is typically surgical removal. With increasing use of cross-sectional imaging in the last two decades, the detection of renal lesions has significantly increased, especially in asymptomatic patients who are scanned for other reasons. In this article, we present the imaging findings of rare solid benign primary kidney neoplasms including renal leiomyoma, reninoma, carcinoid tumor, metanephric adenoma, solitary fibrous tumor of the kidney, lipomatous hemangiopericytoma of the kidney, renal schwannoma, inflammatory myofibroblastic tumor of the kidney, extramedullary hematopoiesis in the kidney, and extranodal renal Rosai-Dorfman disease. Accurate preoperative or prebiopsy diagnoses of these lesions are unusual; however, informed radiologists may sometimes be able to favorably change the patient management and treatment. PMID:26200482

  5. Unusual benign solid neoplasms of the kidney: cross-sectional imaging findings.

    PubMed

    Karaosmano?lu, Ali Devrim; Onur, Mehmet Ruhi; Shirkhoda, Ali; Ozmen, Mustafa; Hahn, Peter F

    2015-01-01

    Kidney neoplasms are common diseases with varying prognoses depending on the subtype of the tumor. The most common solid lesion of the kidney is renal cell carcinoma, and the treatment is typically surgical removal. With increasing use of cross-sectional imaging in the last two decades, the detection of renal lesions has significantly increased, especially in asymptomatic patients who are scanned for other reasons. In this article, we present the imaging findings of rare solid benign primary kidney neoplasms including renal leiomyoma, reninoma, carcinoid tumor, metanephric adenoma, solitary fibrous tumor of the kidney, lipomatous hemangiopericytoma of the kidney, renal schwannoma, inflammatory myofibroblastic tumor of the kidney, extramedullary hematopoiesis in the kidney, and extranodal renal Rosai-Dorfman disease. Accurate preoperative or prebiopsy diagnoses of these lesions are unusual; however, informed radiologists may sometimes be able to favorably change the patient management and treatment. PMID:26200482

  6. Intense uptake evidenced by 18F-FDG PET/CT without a corresponding CT finding--dream or reality?

    PubMed

    Caobelli, Federico; Pizzocaro, Claudio; Guerra, Ugo Paolo

    2014-01-01

    Although 18F-fluoro-deoxy-glucose (FDG) positron emission tomography (PET) has been widely validated and extensively used in the latest years in clinical practice, interpretation of PET/CT images can be affected by several pitfalls. We here present a case of intense lung uptake in a patient without a corresponding finding on CT images, probably due to a microembolism produced during the injection process and located in small vascular structures of the lung parenchyma. PMID:24610649

  7. Early CT findings after interstitial radiation therapy for primary malignant brain tumors

    SciTech Connect

    Tolly, T.L.; Bruckman, J.E.; Czarnecki, D.J.; Frazin, L.J.; Lewis, H.J.; Richards, M.J.; Adamkiewicz, J.J. Jr.

    1988-11-01

    The CT findings after interstitial radiation therapy for brain tumors have not been extensively described. We evaluated retrospectively the CT scans of 13 patients who were treated with brachytherapy for malignant glioma. We found no typical CT appearance that differentiates recurrent tumor from radiation effect. After undergoing brachytherapy, eight of the 13 patients scanned demonstrated enhancement of brain tissue beyond the margins of the original enhancing tumor mass. In most cases, the pattern of enhancement diminished and extended more peripherally from the central necrotic area with time. We also report a new CT finding of focal calcification developing at the site of the radioactive implant.

  8. CT findings of accidental fish bone ingestion and its complications.

    PubMed

    Venkatesh, Sandeep Halagatti; Venkatanarasimha Karaddi, Nanda Kumar

    2016-01-01

    Fish bone is one of the most common accidentally ingested foreign bodies, and patients commonly present to the emergency department with nonspecific symptoms. Fortunately, most of them are asymptomatic and exit the gastrointestinal tract spontaneously. However, fish bones can get impacted in any part of the aerodigestive tract and cause symptoms. Occasionally, they are asymptomatic initially after ingestion and may present remotely at a later date with serious complications such as gastrointestinal tract perforation, obstruction, and abscess formation. Radiographs are most often negative. High degree of clinical suspicion and familiarity with CT appearance can help to detect fish bone along with any associated complications, and direct further management. We describe and illustrate various CT presentations of ingested fish bone and its complications. PMID:26714057

  9. CT findings of accidental fish bone ingestion and its complications

    PubMed Central

    Venkatesh, Sandeep Halagatti; Karaddi, Nanda Kumar Venkatanarasimha

    2016-01-01

    Fish bone is one of the most common accidentally ingested foreign bodies, and patients commonly present to the emergency department with nonspecific symptoms. Fortunately, most of them are asymptomatic and exit the gastrointestinal tract spontaneously. However, fish bones can get impacted in any part of the aerodigestive tract and cause symptoms. Occasionally, they are asymptomatic initially after ingestion and may present remotely at a later date with serious complications such as gastrointestinal tract perforation, obstruction, and abscess formation. Radiographs are most often negative. High degree of clinical suspicion and familiarity with CT appearance can help to detect fish bone along with any associated complications, and direct further management. We describe and illustrate various CT presentations of ingested fish bone and its complications. PMID:26714057

  10. Palatal myoclonus and unusual MRI findings in a patient with membranous lipodystrophy.

    PubMed

    Malandrini, A; Scarpini, C; Palmeri, S; Villanova, M; Parrotta, E; Tripodi, S; Giani, S; DeFalco, D; Guazzi, G C

    1996-01-01

    We describe an Italian male patient, deceased at 29 years of age, affected with a syndrome characterized by childhood-onset seizures, mental disorders, motor dysfunction and bilateral palatal myoclonus. Skeletal X-ray examination showed diffuse osteopenia of the tubular bones, and cyst-like lesions in the carpal, metacarpal and tarsal bones bilaterally and in the proximal end of the right femur. Skin biopsy showed subcutaneous and adipose tissue containing membranocystic structures. Cerebral MR and CT scans showed fronto-temporal atrophy, altered signal of the white matter and mineralization of the caudate and dentate nuclei. These findings strongly recall polycystic lipomembranous osteodysplasia with sclerosing leukoencephalopathy, but in the present case, bone alterations were not prominent; moreover, palatal myoclonus has never previously been described in this syndrome. PMID:8907345

  11. FDG PET/CT findings of superficial angiomyxoma.

    PubMed

    Nishio, Jun; Iwasaki, Hiroshi; Aoki, Mikiko; Nabeshima, Kazuki; Naito, Masatoshi

    2014-04-01

    Superficial angiomyxoma, also known as cutaneous myxoma, is a rare but distinctive soft tissue tumor characterized by a sparse proliferation of spindle-shaped cells in a prominent myxoid matrix with numerous thin-walled blood vessels. We present a case of a pathologically proven superficial angiomyxoma arising in the first web space of the left hand of a 39-year-old man. Integrated PET/CT images showed mild focal FDG uptake in a subcutaneous soft tissue mass, with a maximum standardized uptake value of 2.94. PMID:23797232

  12. Unusual Presentation of Bladder Paraganglioma: Comparison of 131I MIBG SPECT/CT and 68Ga DOTANOC PET/CT

    PubMed Central

    Jain, Tarun Kumar; Basher, Rajender Kumar; Gupta, Nitin; Shukla, Jaya; Singh, Shrawan Kumar; Mittal, Bhagwant Rai

    2016-01-01

    Extraadrenal chromaffin cell-related tumors or paragangliomas are rare, especially in the bladder, accounting for less than 1% of cases. We report a 16-year-old boy who presented with hematuria and paroxysmal headache and was found to have a prostatic growth infiltrating the urinary bladder on anatomical imaging. Iodine-131 (131I) metaiodobenzylguanidine (MIBG) whole-body scanning and subsequently gallium-68 (68Ga) DOTANOC positron emission tomography/computed tomography (PET/CT) were performed. The MIBG scan revealed a non-tracer-avid soft-tissue mass, while DOTANOC PET/CT revealed a tracer-avid primary soft-tissue mass involving the urinary bladder and prostate with metastasis to the iliac lymph nodes. He underwent surgical management; histopathology of the surgical specimen revealed a bladder paraganglioma, whereas the prostate was found to be free of tumor. PMID:26912984

  13. Unusual Presentation of Bladder Paraganglioma: Comparison of (131)I MIBG SPECT/CT and (68)Ga DOTANOC PET/CT.

    PubMed

    Jain, Tarun Kumar; Basher, Rajender Kumar; Gupta, Nitin; Shukla, Jaya; Singh, Shrawan Kumar; Mittal, Bhagwant Rai

    2016-01-01

    Extraadrenal chromaffin cell-related tumors or paragangliomas are rare, especially in the bladder, accounting for less than 1% of cases. We report a 16-year-old boy who presented with hematuria and paroxysmal headache and was found to have a prostatic growth infiltrating the urinary bladder on anatomical imaging. Iodine-131 ((131)I) metaiodobenzylguanidine (MIBG) whole-body scanning and subsequently gallium-68 ((68)Ga) DOTANOC positron emission tomography/computed tomography (PET/CT) were performed. The MIBG scan revealed a non-tracer-avid soft-tissue mass, while DOTANOC PET/CT revealed a tracer-avid primary soft-tissue mass involving the urinary bladder and prostate with metastasis to the iliac lymph nodes. He underwent surgical management; histopathology of the surgical specimen revealed a bladder paraganglioma, whereas the prostate was found to be free of tumor. PMID:26912984

  14. Incidental Findings on Simulation CT Images for Adjuvant Radiotherapy in Breast Cancer Patients.

    PubMed

    Park, Jun Su; Choi, Doo Ho; Huh, Seung Jae; Park, Won; Nam, Seok Jin; Lee, Jeong Eon; Kil, Won Ho; Lee, Kyung Soo

    2015-10-01

    We designed this study to evaluate the incidence of incidental findings on computed tomography (CT) scan implemented as simulation for adjuvant radiotherapy in breast cancer patients and to emphasize the need for careful review of simulation CT images before planning radiotherapy. A Resident and attending radiation oncologists retrospectively reviewed the medical records and simulation CT images of 776 patients treated with adjuvant radiotherapy at Samsung Medical Center during 2008. Previously undetected abnormal findings on simulation CT images were defined as incidental findings and interpreted by diagnostic radiologist. If the incidental findings required further evaluation or follow-up, they were defined as indeterminate findings. If subsequent cancers were diagnosed according incidental findings, they were defined as malignancy-related findings. There were 81 indeterminate findings (10.8%) including thyroid nodule, solitary pulmonary nodule, mediastinal lymph node, supraclavicular or axillary lymph node. Among them, there were nine malignancy-related findings (1.3%), including four thyroid cancers, three lung metastases, one primary lung cancer, and one axillary lymph node recurrence. The incidence of incidental findings in this study was low, but some of the findings were related to malignancy. Radiation oncologists should be alert to incidental findings on simulation CT, and incidental findings should be evaluated by diagnostic radiologists. PMID:24645749

  15. CT-SPECT fusion to correlate radiolabeled monoclonal antibody uptake with abdominal CT findings

    SciTech Connect

    Kramer, E.L.; Noz, M.E.; Sanger, J.J.; Megibow, A.J.; Maguire, G.Q. )

    1989-09-01

    To enhance the information provided by computed tomography (CT) and single photon emission computed tomography (SPECT) performed with radiolabeled, anti-carcinoembryonic antigen monoclonal antibody (MoAb), the authors performed fusion of these types of images from eight subjects with suspected colorectal adenocarcinoma. Section thickness and pixel size of the two studies were matched, coordinates of corresponding points from each study were identified, and CT sections were translated, rotated, and reprojected to match the corresponding SPECT scans. The CT-SPECT fusion enabled identification of anatomic sites of tumor-specific MoAb accumulation in four cases, showed non-specific MoAb accumulation in two, and helped confirm information only suggested by the two studies separately in one.

  16. Malignant Peripheral Nerve Sheath Tumor: MRI and CT Findings

    PubMed Central

    Kragha, K. O.

    2015-01-01

    This is a case report of a 56-year-old male with hypertension who presented with urinary retention and bowel incontinence. CT and MRI of the abdomen and pelvis showed a large complex cystic and solid enhancing mass in the right presacral space. Pathology biopsy result showed malignant peripheral nerve sheath tumor (MPNST) with extensive necrosis. The diagnosis of MPNST is extremely difficult due to the lack of (1) conclusive immunohistochemistry or unique chromosomal anomaly, (2) universal distinctive histopathology, and (3) clinical criteria. The clinical, radiologic, and histologic presentation of MPNST is important in its diagnosis. A rare case of MPNST that produced urinary retention and bowel incontinence is presented that may aid clinicians in the diagnosis of this rare clinical entity. Motor weakness, central enhancement, and immunohistochemistry may assist in the diagnosis of MPNST and differentiation between benign peripheral nerve sheath tumor (BPNST) and MPNST. PMID:26634167

  17. Massive right-sided Bochdalek hernia with two unusual findings: a case report

    PubMed Central

    2011-01-01

    Introduction In this report, the case of an adult patient with a massive right-sided Bochdalek hernia with multiple displaced abdominal organs, including the liver and gallbladder, is described. This patient presented with acute cholecystitis of the malpositioned gallbladder. During surgery, nodular regenerative hyperplasia of the liver was also found. To the best of this author's knowledge, these two entities have never been reported in association with this rare condition. Case presentation A 54-year-old Caucasian man presented with nausea and epigastric pain. He had a known history of right-sided Bochdalek hernia which was being managed expectantly. A computerized tomogram revealed the massive hernia with displaced stomach, liver, intestine and omentum into his right thorax. It was believed that our patient had bowel incarceration and he was therefore taken to surgery, where acute cholecystitis and a macronodular liver was identified. A thoracoabdominal approach was used to remove his gallbladder, reduce the herniated viscera and reconstruct his diaphragm. A liver biopsy identified nodular regenerative hyperplasia of the ectopic liver. There were no postoperative complications and at 12 month follow-up, our patient continues to do well. Conclusion This case report describes two unusual findings associated with a congenital Bochdalek diaphragmatic hernia that have never been reported. In addition, unique caveats to the surgical management of this complex rare condition are discussed. PMID:22017965

  18. Role of CT Colonography in Colonic Lesions and Its Correlation with Conventional Colonoscopic Findings

    PubMed Central

    Singh, Kunwarpal; Thukral, Chuni Lal; Singh, Neeti Rajan; Singh, Amandeep; Kaur, Harmeet

    2015-01-01

    Background Preoperative evaluation in patients with colorectal carcinoma is essential for a correct therapeutic plan. Conventional colonoscopy has certain limitations including its inability to detect synchronous lesions in case of distal obstructive mass and inaccurate tumour localization. CT colonography combines cross sectional imaging with virtual colonoscopic images and offers a comprehensive preoperative evaluation in patients with colorectal carcinoma including detection of synchronous lesions with accurate segmental localization and loco regional staging. Aim The objective was to determine the role of CT colonography in various colonic lesions and to correlate the findings with conventional colonoscopy and histopathological findings. Settings and Design This prospective study included 50 patients with clinical symptoms suspicious of colonic pathology. Materials and Methods All the patients underwent both CT colonography and conventional colonoscopy on the same day. CT colonography was performed in supine and prone position. Considering histopathological and/or surgical findings as gold standard, sensitivity and specificity of both the modalities were calculated. Results Conventional colonoscopy missed two synchronous lesions proximal to occlusive mass and one lesion proximal to the anastomotic site; all were detected with CT colonography. One carpet lesion in rectum and one case of mild ulcerative colitis were missed by CT colonography. Sensitivity and specificity for detection of colorectal cancer were 97.56% and 100%, resp. with PPV and NPV of 100% and 93.75%, for CT colonography and 92.68% and 100%, respectively with PPV and NPV of 100% and 83.3% for conventional colonoscopy. Sensitivity for correct detection of acute and chronic ulcerative colitis of CT colonography was 66.6 % and 100 %, resp. Conclusion CT colonography has higher sensitivity than conventional colonoscopy for detection of colorectal carcinoma, including its ability to detect abnormalities proximal to obstructing lesion, accurate segmental localization of lesions and staging. However, some limitations of CT colonography were difficulty in detection of flat lesions and lack of information about hyperemia and superficial mucosal erosion, where conventional colonoscopy scored over CT colonography. PMID:26023619

  19. Malignant Jugular Paraganglioma: Unusual Presentation on 68Ga DOTANOC PET/CT.

    PubMed

    Jain, Tarun Kumar; Basher, Rajender Kumar; Shukla, Jaya; Mittal, Bhagwant Rai; Panda, Naresh K

    2016-02-01

    Metastatic jugular paraganglioma are rare tumors and account for less than 1% of the cases of head and neck tumors. We report a 40-year-old woman of jugular paraganglioma, presenting with right-sided neck swelling, hearing loss, and pulsatile tinnitus. Contrast-enhanced CT temporal bone revealed a mass in the right jugular foramina and extending inferiorly to internal jugular vein. Ga DOTANOC PET/CT was performed, which revealed somatostatin receptor expressing lesion in the right internal jugular vein and extension into sigmoid sinus and additional metastatic focus in the sacrum. PMID:26646996

  20. An unusual right ventricle metastasis from mandible squamous cell carcinoma detected on FDG PET/CT.

    PubMed

    Lu, Yang

    2015-04-01

    A patient with history of mandible squamous cell carcinoma underwent an FDG PET/CT scan. A focal hypermetabolic right ventricle lesion was noted and suggestive of metastasis. A cardiac MRI verified the right ventricle wall mass. Further endomyocardial biopsy confirmed the diagnosis of metastatic squamous cell carcinoma. PMID:25608149

  1. “Eczema Coxsackium” and Unusual Cutaneous Findings in an Enterovirus Outbreak

    PubMed Central

    Oza, Vikash; Frieden, Ilona J.; Cordoro, Kelly M.; Yagi, Shigeo; Howard, Renee; Kristal, Leonard; Ginocchio, Christine C.; Schaffer, Julie; Maguiness, Sheilagh; Bayliss, Susan; Lara-Corrales, Irene; Garcia-Romero, Maria Teresa; Kelly, Dan; Salas, Maria; Oberste, M. Steven; Nix, W. Allan; Glaser, Carol; Antaya, Richard

    2013-01-01

    OBJECTIVE: To characterize the atypical cutaneous presentations in the coxsackievirus A6 (CVA6)–associated North American enterovirus outbreak of 2011–2012. METHODS: We performed a retrospective case series of pediatric patients who presented with atypical cases of hand, foot, and mouth disease (HFMD) from July 2011 to June 2012 at 7 academic pediatric dermatology centers. Patients were included if they tested positive for CVA6 or if they met clinical criteria for atypical HFMD (an enanthem or exanthem characteristic of HFMD with unusual morphology or extent of cutaneous findings). We collected demographic, epidemiologic, and clinical data including history of skin conditions, morphology and extent of exanthem, systemic symptoms, and diagnostic test results. RESULTS: Eighty patients were included in this study (median age 1.5 years, range 4 months–16 years). Seventeen patients were CVA6-positive, and 63 met clinical inclusion criteria. Ninety-nine percent of patients exhibited a vesiculobullous and erosive eruption; 61% of patients had rash involving >10% body surface area. The exanthem had a perioral, extremity, and truncal distribution in addition to involving classic HFMD areas such as palms, soles, and buttocks. In 55% of patients, the eruption was accentuated in areas of eczematous dermatitis, termed “eczema coxsackium.” Other morphologies included Gianotti-Crosti–like (37%), petechial/purpuric (17%) eruptions, and delayed onychomadesis and palm and sole desquamation. There were no patients with serious systemic complications. CONCLUSIONS: The CVA6-associated enterovirus outbreak was responsible for an exanthem potentially more widespread, severe, and varied than classic HFMD that could be confused with bullous impetigo, eczema herpeticum, vasculitis, and primary immunobullous disease. PMID:23776120

  2. Accumulation of PBDEs in an urban river otter population and an unusual finding of BDE-209.

    PubMed

    Nelson, Cait; Drouillard, Ken; Cheng, Kimberly; Elliott, John; Ismail, Nargis

    2015-01-01

    River otter scat samples (n = 77) and blood samples (n = 16) collected through non-invasive field collections and live-capture activities (November 2009 to October 2010) along the coastline of Southern Vancouver Island, near Victoria, British Columbia (BC) were analyzed for polybrominated diphenyl ethers (PBDEs). ∑PBDEs were highest in urbanized regions of Victoria Harbour for blood (1.12 μg/g lipid weight) and scat (0.35 μg/g lipid weight). A location effect between zones was confirmed statistically for blood but not for scat. Specific congeners with the highest concentrations overall were BDE-47 in blood samples (0.37 μg/g lipid weight) and BDE-206 (0.18 μg/g lipid weight) and BDE-47 (0.16 μg/g lipid weight) in scat samples. There was also an unusual finding of extremely high levels of BDE-209 in 2 scat samples (163 and 956 μg/g lipid weight). The patterns of select congeners (BDE 47, 99, 100, 153, 154) measured in blood and scat were found not to be significantly different (Chi-square Test, X2 = 21.08, DF = 4, p = 0003). The most prominent congeners within Victoria Harbour were BDE-47 for both blood (0.82 mg/kg lipid weight) and scat (0.26 mg/kg lipid weight) followed by BDE-206 (0.18 μg/g lipid weight) and BDE-207 (0.10 μg/g lipid weight) for scat only. Comparable levels of BDE-47 were reported across the study area whereas BDE 206 and 207 were only observed in Victoria Harbour (scat). Toxicological effects of PBDEs in rivers otters from Victoria, BC are still unknown however the predominance of BDE-47 could have negative implication as an endocrine disruptor. PMID:25463257

  3. Traumatic aortic injury: CT findings, mimics, and therapeutic options

    PubMed Central

    Lantz, Eric J.; Johnson, C. Michael; Young, Philip M.

    2014-01-01

    Objective Traumatic aortic injury (TAI) is rare, but frequently lethal. However, with prompt diagnosis, patients can undergo life-saving open or endovascular repair. Unfortunately, because these injuries are relatively rare, subtle forms of these injuries may be missed, and normal variants may mimic TAI leading to misdiagnosis. Conclusions We will discuss computed tomography findings of typical injury patterns of traumatic aortic injuries as well as treatment options, diagnostic pitfalls and injury mimics. These are highlighted with clinical case examples. PMID:25009793

  4. FDG PET/CT in evaluation of unusual cutaneous manifestations of breast cancer.

    PubMed

    Dave, Shaylee R; Samuel, Thomas A; Pucar, Darko; Savage, Natasha; Williams, Hadyn T

    2015-01-01

    Cutaneous metastases of primary internal malignancies are rare, with an incidence of 0.7% to 10.4%. Cutaneous manifestations due to breast cancer are the most common metastases dermatologists observe, with a prevalence of 2.4% and an incidence of 23.9%. Presence of cutaneous metastases is usually a late event in disease progression, indicating grave prognosis. Recognition of cutaneous breast cancer metastases significantly alters therapeutic plans, especially when the disease was thought to be successfully cured. F-FDG PET CT imaging can detect cutaneous metastasis and sites of distant metastases and monitor response to therapy. We report 3 patients with cutaneous-predominant breast carcinoma seen by FDG PET/CT. PMID:25140546

  5. CT findings in acute peritonitis: a pattern-based approach

    PubMed Central

    Filippone, Antonella; Cianci, Roberta; Pizzi, Andrea Delli; Esposito, Gianluigi; Pulsone, Pierluigi; Tavoletta, Alessandra; Timpani, Mauro; Cotroneo, Antonio Raffaele

    2015-01-01

    Many inflammatory and infectious entities may acutely affect the peritoneum causing a thickening of its layers. Unfortunately, several acute peritoneal diseases can have overlapping features, both clinically and at imaging. Therefore, the awareness of the clinical context, although useful, may be sometimes insufficient to identify the underlying cause. This article provides a specific computed tomography-based approach including morphologic characteristics of peritoneal thickening (e.g., smooth, irregular, or nodular) and ancillary findings to narrow the differential diagnosis of acute peritonitis. PMID:26359872

  6. Contribution of Antemortem Computed Tomography Findings to Cause of Death Determination: An Unusual Fatal Stroke.

    PubMed

    Rérolle, Camille; Pucheux, Julien; Lefrancq, Thierry; Barrault, Céline; Saint-Martin, Pauline

    2015-07-01

    In the case reported here, the antemortem computed tomography scan (CT scan) was essential in the forensic investigation. A 32-year-old man was found fully awake with a facial abrasion, after what seemed to be a car accident. He lost consciousness suddenly one hour after initial management. Successive CT scan showed a facial fracture and a metallic foreign body in the carotid canal associated with an occlusion/dissection of the left internal carotid, a pseudoaneurysm, and a carotid-cavernous fistula. The victim died from a stroke. Autopsy confirmed that the facial abrasion was a gunshot entrance wound, the metallic foreign body being a projectile. Intracranial vascular injuries linked with gunshot wounds are most of the time isolated and due to pelet embolism. The observed vascular injury association has never been described in the existing literature. The CT scan provided a better understanding of the chronology of events that led to death. PMID:25782621

  7. Findings of non-pathologic perfusion defects by CT arterial portography and non-pathologic enhancement of CT hepatic arteriography

    PubMed Central

    Li, Li; Wu, Pei-Hong; Lin, Hao-Gao; Li, Jin-Qing; Mo, Yun-Xian; Zheng, Lie; Lu, Li-Xia; Ruan, Chao-Mei; Chen, Lin

    1998-01-01

    AIM: To recognize the characteristic findings of non-pathologic perfusion defects with CT arterial portography (CTAP) and nonpathologic enhancement found in CT hepatic arteriography (CTHA). METHONDS: The manifestations of nonpathologic perfusion defects with CTAP and non-pathologic enhancement found in CTHA were analyzed in 50 patients with primary hepatocellular carcinoma. RESULTS: The false-positive rate of perfusion defects detected in CTAP was 15.1%. The shapes of perfusion defects were peripheral wedge, small, round, and patchy. The occurrence rate of non-pathologic enhancement found in CTHA was 22.0%. The shapes of non-pathologic enhancement were small, round, irregular, and wedge. CONCLUSION: There was high frequency of non-pathologic perfusion defects detected with CTAP and non-pathologic enhancement found in CTHA. The simultaneous use of both procedures may help decrease the false-positive rate, and increase the veracity of diagnosis for hepatocellular carcinoma. PMID:11819358

  8. Pulmonary thin-section CT findings in acute Moraxella catarrhalis pulmonary infection

    PubMed Central

    Okada, F; Ando, Y; Nakayama, T; Tanoue, S; Ishii, R; Ono, A; Watanabe, M; Takaki, H; Maeda, T; Mori, H

    2011-01-01

    Objective Moraxella catarrhalis is an important pathogen in the exacerbation of chronic obstructive pulmonary disease. The aim of this study was to assess the clinical and pulmonary thin-section CT findings in patients with acute M. catarrhalis pulmonary infection. Methods Thin-section CT scans obtained between January 2004 and March 2009 from 292 patients with acute M. catarrhalis pulmonary infection were retrospectively evaluated. Clinical and pulmonary CT findings in the patients were assessed. Patients with concurrent infection including Streptococcus pneumoniae (n = 72), Haemophilus influenzae (n = 61) or multiple pathogens were excluded from this study. Results The study group comprised 109 patients (66 male, 43 female; age range 28102 years; mean age 74.9 years). Among the 109 patients, 34 had community-acquired and 75 had nosocomial infections. Underlying diseases included pulmonary emphysema (n = 74), cardiovascular disease (n = 44) or malignant disease (n = 41). Abnormal findings were seen on CT scans in all patients and included ground-glass opacity (n = 99), bronchial wall thickening (n = 85) and centrilobular nodules (n = 79). These abnormalities were predominantly seen in the peripheral lung parenchyma (n = 99). Pleural effusion was found in eight patients. No patients had mediastinal and/or hilar lymph node enlargement. Conclusions M. catarrhalis pulmonary infection was observed in elderly patients, often in combination with pulmonary emphysema. CT manifestations of infection were mainly ground-glass opacity, bronchial wall thickening and centilobular nodules. PMID:21123308

  9. CT Findings in People Who Were Environmentally Exposed to Asbestos in Korea

    PubMed Central

    2015-01-01

    Asbestos related pleuropulmonary disease has been emerging health problem for recent years. It can cause variable clinical symptoms and radiological abnormalities. However, there has been no report for their characteristics in subjects who were environmentally exposed to asbestos. We reviewed the CT images of 35 people who were environmentally exposed to asbestos in Chungnam province, Korea. The study result showed high incidence of pleural plaque and pulmonary fibrosis on chest CT (94% and 77%, respectively). The common CT findings of lung parenchymal lesions were as follows: centrilobular opacities (94%), subpleural dot-like or branching opacities (80%), interlobular septal thickening (57%), intralobular interstitial thickening (46%), parenchymal bands (43%) and subpleural curvilinear line (29%). There were no significant differences in the prevalence of pulmonary fibrosis and pleural plaques according to sex, age and duration of exposure. In conclusion, pleural plaque and pulmonary fibrosis are common asbestos-related CT finding in the exposed people. Asbestos related lung parenchymal CT findings in the participants with environmental exposure show similar to those observed in the occupational exposure. PMID:26713068

  10. Correlation between PET/CT results and histological and immunohistochemical findings in breast carcinomas*

    PubMed Central

    Bitencourt, Almir Galvo Vieira; Lima, Eduardo Nbrega Pereira; Chojniak, Rubens; Marques, Elvira Ferreira; de Souza, Juliana Alves; Graziano, Luciana; Andrade, Wesley Pereira; Osrio, Cynthia Aparecida Bueno de Toledo

    2014-01-01

    Objective To correlate the results of 18F-fluoro-2-deoxy-D-glucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) performed with a specific protocol for assessment of breasts with histological/immunohistochemical findings in breast carcinoma patients. Materials and Methods Cross-sectional study with prospective data collection, where patients with biopsy-confirmed breast carcinomas were studied. The patients underwent PET/CT examination in prone position, with a specific protocol for assessment of breasts. PET/CT findings were compared with histological and immunohistochemical data. Results The authors identified 59 malignant breast lesions in 50 patients. The maximum diameter of the lesions ranged from 6 to 80 mm (mean: 32.2 mm). Invasive ductal carcinoma was the most common histological type (n = 47; 79.7%). At PET/CT, 53 (89.8%) of the lesions demonstrated anomalous concentrations of 18F-FDG, with maximum SUV ranging from 0.8 to 23.1 (mean: 5.5). A statistically significant association was observed between higher values of maximum SUV and histological type, histological grade, molecular subtype, tumor diameter, mitotic index and Ki-67 expression. Conclusion PET/CT performed with specific protocol for assessment of breasts has demonstrated good sensitivity and was associated with relevant histological/immunohistochemical factors related to aggressiveness and prognosis of breast carcinomas. PMID:25741051

  11. Aorta-Left Renal Vein Fistula Complicating an Aortic Aneurysm: Preoperative and Postoperative Multislice CT Findings

    SciTech Connect

    Barrier, Pierre Otal, Philippe; Garcia, Olivier; Vahdat, Olivier; Domenech, Brice; Lannareix, Valerie; Joffre, Francis; Rousseau, Herve

    2007-06-15

    Fistulas complicating an abdominal aortic aneurysm (AAA) are rare, and fistulas involving the left renal vein are particularly uncommon. We highlight here a fistula between an infrarenal aortic aneurysm and a retroaortic left renal vein, revealed by left flank pain associated with hematuria and acute renal failure. The multislice CT angiography performed in this 68-year-old patient revealed communication and equal enhancement between the aorta and the left gonadic vein, suggesting the presence of a fistula. The three-dimensional VRT reconstructions presented in this case were of great value in the preoperative planning, enabling immediate visualization of this unusual feature. Alternative diagnoses to consider when encountering this clinical presentation are reviewed.

  12. Inflammatory Myofibroblastic Tumor of the Lung: Unusual Imaging Findings of Three Cases

    PubMed Central

    Ufuk, Furkan; Herek, Duygu; Karabulut, Nevzat

    2015-01-01

    Summary Background Inflammatory myofibroblastic tumor (IMT), also known as inflammatory pseudotumor, is a benign disorder composed of fibrous tissues, myofibroblasts and inflammatory cell proliferation with obscure etiology. Although it is the most common lung tumor in children, it is seen rarely in adults constituting less than 1% of adult lung tumors. Case Reports In this report, we present different and rare CT manifestations of three adult patients with lung IMT. Conclusions In conclusion, IMT is a rare lung tumor in adults and may simulate malignancy. It should be considered in the differential diagnosis when a large mass with lobulated contour or harboring coarse calcification is observed. PMID:26568776

  13. Abdominal CT findings of disseminated Mycobacterium avium-intracellulare in AIDS

    SciTech Connect

    Nyberg, D.A.; Federle, M.P.; Jeffrey, R.B.; Bottles, K.; Wofsy, C.B.

    1985-08-01

    Disseminated infection from Mycobacterium avium-intracellulare (MAI) has recently been recognized as a common and serious complication of the acquired immuno-deficiency syndrome (AIDS). The authors report the computed tomographic (CT) findings of 17 patients with AIDS and disseminated MAI referred for abdominal CT examination. Multiple large retroperitoneal and mesenteric lymph nodes were demonstrated in 14 patients (82%). The authors concluded that large, bulky, intraabdominal adenopathy in AIDS patients should suggest the diagnosis of MAI infection as well as other known causes of adenopathy, including lymphoma and metastatic Kaposi sarcoma. The authors recommend percutaneous aspiration of enlarged intraabdominal lymph nodes to establish the correct diagnosis.

  14. Benign nocturnal alternating hemiplegia of childhood: a new case with unusual findings.

    PubMed

    Mangano, Salvatore; Fontana, Antonina; Spitaleri, Chiara; Mangano, Giuseppa Renata

    2014-05-01

    It has been described a neuro developmental disorder labelled "Benign nocturnal alternating hemiplegia of childhood" (BNAHC) characterized by recurrent attacks of nocturnal hemiplegia without progression to neurological or intellectual impairment. We report a female patient who at 11months revealed a motionless left arm, unusual crying without impairment of consciousness and obvious precipitating factors. The attacks occur during sleep in the early morning with lack of ictal and interictal electroencephalographic abnormalities, progressive neurological deficit, and cognitive impairment. Unlike previous reports of BNAHC our patient come from a family with a history of both migraine, hemiplegic migraine, and sleep disorders. Our study remarks on the typical features described in previous studies and stresses the uncommon aspects that could help to identify the disorder which is likely to have been underestimated. Despite some clinical similarities between BNAHC and familiar hemiplegic migraine and alternating hemiplegia of childhood, the genetic analyses of our patient did not reveal genetic mutations found in both disorders. PMID:23820111

  15. Finding the Unusual, Unexpected, Expected, or Otherwise Interesting Patterns in Large Earth Science Datasets

    NASA Astrophysics Data System (ADS)

    Boller, R. A.; McGann, M.; Gunnoe, T.; Ilavajhala, S.; Timmons, E.; Cechini, M. F.; King, J.; Schmaltz, J. E.; Roberts, J. T.; Alarcon, C.; Huang, T.; Thompson, C. K.; Hall, J. R.; Plesea, L.; Murphy, K. J.

    2014-12-01

    By grinding decades of NASA's Earth data into imagery, serving it openly and responsively, and then building an interface to browse it, the Global Imagery Browse Services (GIBS) and Worldview client aim to transform the way "interesting" Earth observations are discovered. Taken together, this visual system provides a mechanism to interactively explore full-resolution imagery, compare it against other imagery, investigate differences over time, and finally enable a linkage back to the original data to encourage further analysis. The hope is that, by taking this visual approach to data discovery, the user will be able to rapidly discern unusual, unexpected, expected, or otherwise "interesting" patterns which are well-suited to human perception. The user interface and system design decisions which support the visual reasoning processes listed above will be described for this session.

  16. Spectrum and detection of musculoskeletal findings on trauma-related CT torso examinations.

    PubMed

    Kung, Justin W; Wu, Jim S; Shetty, Sanjay K; Khasgiwala, Vhaibhav C; Appleton, Paul; Hochman, Mary G

    2014-08-01

    This study aims (1) to evaluate the spectrum of musculoskeletal (MSK) findings detected on trauma-related torso CT exams performed in the emergency department and (2) to identify the findings of high clinical importance that are underreported. Following IRB approval, two fellowship-trained MSK radiologists independently reviewed 200 consecutive trauma CT torso examinations performed at a level 1 trauma center, focusing on MSK findings. Discrepancies were resolved by consensus. Findings were categorized as of high, moderate, or low clinical importance based on criteria established with an orthopedic trauma surgeon. Findings evident on only one series (scout, axial, or sagittal/coronal reformations) were documented. The consensus reading was compared to the final report. Unreported findings of high clinical importance were entered into our departmental QA system. Eighty-two percent (164/200) of the studies had at least one MSK finding. There were 433 total findings of varying importance and the overall detection rate was 61 % (266/433). The detection rate for high importance findings was 80 % (177/221) with the majority representing acute fractures (99 %). For findings of high clinical importance, the lowest detection rates were for fractures of the sternum, proximal humerus, and forearm. Of the high severity findings, 6.3 % (14/221) were detected only on sagittal or coronal reformatted or scout images. Twenty percent of musculoskeletal findings of high clinical importance on trauma-related CT torso exams were not reported. Fractures of the sternum, proximal humerus, and forearm were the most commonly missed fractures and review of scout and multiplanar reformations can increase detection. PMID:24557456

  17. Unusual Malignant Coronary Artery Anomaly: Results of Coronary Angiography, MR Imaging, and Multislice CT

    SciTech Connect

    Apitzsch, Jonas; Kuehl, Harald P.; Muehlenbruch, Georg; Mahnken, Andreas H.

    2010-04-15

    We report the case of a man with an uncommon anomaly of the origin and course of the left coronary artery. Clinical, coronary angiography, magnetic resonance imaging, and multislice computed tomography findings of this intermittently symptomatic 49 year-old patient with the rare anomaly of his left coronary artery stemming from the right sinus of Valsalva and taking an interarterial and intraseptal course are presented. The diagnostic value of the different imaging modalities is discussed.

  18. Incidental cranial CT findings in head injury patients in a Nigerian tertiary hospital

    PubMed Central

    Ogbole, Godwin I.; Adeleye, Amos O.; Owolabi, Mayowa O.; Olatunji, Richard B.; Yusuf, Bolutife P.

    2015-01-01

    Background: Incidental findings on computed tomography (CT) scans are occasionally noted in patients presenting with head injury. Since it can be assumed that head injured patients are of normal health status before the accident, these findings may be a representation of their frequency in the general population. Our aim was to determine the prevalence of such incidental findings among head injured patients in Nigeria's foremost center of clinical neurosciences. Materials and Methods: We conducted a retrospective review of CT scan images of 591 consecutive eligible patients over a 5-year period (2006-2010) to identify incidental findings. The images were evaluated by consensus agreement of two radiologists. Associations with gender and age were explored using appropriate statistical tests with an alpha level of 0.05. Results: The mean patient age was 34.6 21.2 years, and male to female ratio was 3.2: 1. Incidental findings were noted in 503/591 (85.1 %) of the scans. Intracranial calcification was the commonest finding occurring in 61.8% of patients. Over 90% of the findings were benign. Compared with older ones, patients under the age of 60 were less likely, (P < 0.001), to have incidental findings. Conclusion: Although the majority of incidental findings in this African cohort of head injury patients are benign some clinically significant lesions were detectable. It is therefore recommended that such findings be adequately described in the radiological reports for proper counseling and follow-up. PMID:25949036

  19. Samonella-and Shigella-induced ileitis: CT findings in four patients

    SciTech Connect

    Balthazar, E.J.; Charles, H.W.; Megibow, A.J.

    1996-05-01

    The purpose of this study is to describe and illustrate the CT appearance of four cases of acute terminal ileitis induced by nontyphoidal Salmonella and Shigella infection and to review the radiographic and endoscopic findings of these entities. The medical records, CT examinations, and small bowel examinations of three patients with Salmonella ileitis and one patient with Shigella ileitis were retrospectively reviewed. CT examinations were done in four patients, colonoscopy in three patients, and small bowel examinations in two patients. Stool cultures established the diagnosis of nontyphoidal Salmonella enteritis in three patients and Shigella enteritis in one patient. The patients symptoms and clinical findings resolved promptly following supportive therapy and appropriate antibiotic therapy. CT showed slight circumferential and homogeneous thickening of the terminal ileum over a segment of 10-15 cm in patients with Salmonella ileitis. Associated mild thickening of the wall of the colon was present in addition. Small bowel examination performed in one patient revealed a spastic terminal ileum with thickened mucosal folds. Colonoscopy revealed acute colitis involving the colon diffusely in one case, but sparing the distal 50 cm of the colon in one case. CT showed more pronounced thickening of the terminal ileum and a target configuration in the patient with Shigella ileitis. Small bowel examination revealed narrowing, irregular contour, several large nodular defects, and a severely ulcerated mucosa affecting the terminal ileum. Colonoscopy revealed a normal colon and large ulcerations with fibro-purulent exudate in the terminal ileum. In patients with severe Salmonella or Shigella infections or persistent and/or confusing clinical presentations, CT can play a complementary but important role in the initial diagnostic evaluation. 20 refs., 2 figs.

  20. Ischemic colitis: spectrum of CT findings, sites of involvement and severity.

    PubMed

    Cruz, Cinthia; Abujudeh, Hani H; Nazarian, Rosalynn M; Thrall, James H

    2015-08-01

    To summarize the frequency of findings on IV contrast, enhanced computer tomography (CT) in 335 patients with pathologically proven ischemic colitis (IC) determine the most frequent locations and patterns of involvement and establish the correlation of these findings with the severity of IC. 231 patients were excluded for not having a concomitant CT or for having underlying comorbidities. 104 cases were analyzed. Scans were evaluated for abnormal wall enhancement (AE), bowel wall thickening (BWT), bowel dilatation (DIL), mesenteric fat stranding (FS), venous engorgement (VE), pericolonic free fluid (FF), and pneumatosis (PN) and portomesenteric venous gas. Segmental versus pancolonic involvement was noted. Severity was determined by histopathology criteria. Data obtained are as follows: female to male incidence, 69% (70) vs. 31% (34); average age, 64.5; and positive CT, 102/104 (98.1%). The most frequent findings include FS (88%), BWT (88%), and AE (82%) regardless of severity of involvement. Statistically significant increased risk ratio and likelihood of severe ischemia for PN, DIL, and FF individually. BWT, DIL, FS, FF, VE, and PN together have a probability for severe IC of 91.8%. A correlation between fewer findings and milder IC was found (R (2)?=?0.6771). The most frequently involved segments: descending (64%) and sigmoid colon (54%). Splenic flexure (SF) was infrequently involved (n?=?8, 7.84%). Females had two times higher incidence of IC. The most frequent CT findings in IC are FS, BWT, and AE regardless of the severity. PN is suggestive of severe IC. Segmental involvement is the predominant pattern. The distal colon is more frequently involved. SF contrary to the conventional literature is not disproportionately involved in IC. PMID:25732355

  1. Retroperitoneal Fasciitis: Spectrum of CT Findings in the Abdomen and Pelvis.

    PubMed

    Chingkoe, Christina M; Jahed, Ali; Loreto, Michael P; Sarrazin, Jose; McGregor, Caitlin T; Blaichman, Jason I; Glanc, Phyllis

    2015-01-01

    Retroperitoneal fasciitis is a rare but potentially lethal complication of infection. Early diagnosis is crucial and is usually made when there is a high degree of clinical suspicion combined with characteristic imaging findings leading to early surgical intervention. Computed tomography (CT) can play a central role in demonstrating early findings, assessing the extent of disease to help determine the best surgical approach, identifying the primary source of infection, and evaluating the treatment response. The possible presence of retroperitoneal fasciitis should be considered in patients presenting with symptoms of sepsis, including pain that is disproportionate with the clinical abnormality. When retroperitoneal fasciitis is suspected, emergency CT can facilitate early diagnosis and evaluation of the extent of disease. Common findings at CT include fascial thickening and enhancement, muscular edema, fat stranding, fluid collections, and abscess formation. Gas tracking along fascial planes in the retroperitoneum is the hallmark of retroperitoneal fasciitis but is not seen in all cases. Another important clue to the diagnosis is asymmetric involvement of the retroperitoneal fascial planes and deep tissues. Fasciitis in the retroperitoneum may originate from infected retroperitoneal organs or from infection that spreads along indirect and/or direct pathways from a primary source elsewhere in the body. Findings of indirect tracking and transgression of fascial planes may indicate more severe infection associated with the necrotizing form of retroperitoneal fasciitis. Despite aggressive antibiotic treatment, early and repeated surgical dbridement may be required to remove nonviable tissue in patients with the necrotizing form of retroperitoneal fasciitis. Awareness of the anatomy of the retroperitoneum, potential routes of spread of infection, and the spectrum of CT findings in retroperitoneal fasciitis is needed to achieve prompt diagnosis and guide treatment. PMID:26172354

  2. Early CT findings of acute cerebral infarction in the middle cerebral artery territory.

    PubMed

    Ying, K S; Pang, K K; Huang, J K; Lin, J C

    1992-04-01

    For an early and definitive diagnosis of acute cerebral infarction by computed tomography (CT), we retrospectively analyzed the initial CT findings of 14 patients with proven acute middle cerebral artery (MCA) infarction within 4 hours after stroke onset. The following results were obtained: (a) abnormal CT findings could be recognized quite early in 13 patients (92.9%), (b) the most common and earliest finding was loss of defination of the gray-white interface at the lateral margins of the insula. This sign was recognized in 12 patients (85.7%) and could be detected as early as 1 hour after stroke onset, (c) the next common finding was narrowing or blurring of the Sylvian fissure in 10 patients (71.4%) and could be detected 1.5 hours after stroke onset, (d) an obscured outline or partial disappearance of the lentiform nucleus was recognized in 7 patients (50%) and could be detected 1.5 hours after stroke onset, (e) effacement of the cerebral sulci was found in 6 patients (42.9%) and could be detected 2.5 hours after stroke onset, (f) increased density in MCA or its major branches was not seen in our patients. PMID:1318145

  3. Unusual case of cerebral aspergillosis with clinical and imaging findings mimicking lymphoma.

    PubMed

    Sidani, C; Freiser, M E; Saigal, G; Sklar, E

    2013-06-01

    A 14-year-old female post-transplant patient with a history of post-transplant lymphoproliferative disease/lymphoma presented with fever and lethargy. Computed tomography of the brain demonstrated a hypodense lesion with surrounding edema in the right periventricular region not seen on a routine study performed two weeks earlier. On magnetic resonance imaging (MRI) this lesion was mainly iso-intense to gray matter on T2-weighted (T2W) images and demonstrated peripheral contrast enhancement. Diffusion restriction was seen within most of the lesion including, but not limited to, its periphery. Lesion location and MRI characteristics, particularly on T2W and diffusion sequences, were suggestive of lymphoma. The patient's history of post-transplant lymphoproliferative disorder also supported this diagnosis. However, in view of the patient's immunocompromised state, rapid onset of symptoms, and recent normal CT scan of the brain, infection was also entertained. Biopsy revealed short branching hyphae consistent with aspergillosis. This case is interesting as the MRI restriction pattern and the patient's history were more suggestive of lymphoma, but in reality the lesion represented an evolving aspergillosis abscess. Biopsy was necessary to further proceed with appropriate medical management, which is significantly different for the two entities. PMID:23859284

  4. (18)F-FDG PET/CT findings in a case with HIV (-) Kaposi sarcoma.

    PubMed

    Ozdemir, E; Poyraz, N Y; Keskin, M; Kandemir, Z; Turkolmez, S

    2014-01-01

    Although mucocutaneous sites are the most frequently encountered sites of involvement, Kaposi Sarcoma (KS) may also occasionally involve the breast and the skeletal, endocrine, urinary and nervous systems.. Various imaging modalities may be used to delineate the extent of the disease by detecting unexpected sites of involvement. Herein, we report a case of classical type KS, in whom staging with (18)F-FDG PET/CT imaging disclosed widespread disease and unexpected findings of bone and salivary gland involvement. PMID:24119549

  5. Small bowel obstruction due to phytobezoar formation within meckel diverticulum: CT findings

    SciTech Connect

    Frazzini, V.I. Jr.; English, W.J.; Bashist, B.; Moore, E.

    1996-05-01

    Intestinal obstruction due to a phytobezoar within a Meckel diverticulum is exceedingly rare, with only seven reported cases in the surgical literature. The most important precipitating factor is the ingestion of agents high in fiber and cellulose. Small bowel obstruction in all but one case was due to retrograde propagation of the bezoar into the small bowel lumen. We report the clinical and CT findings in such a patient following a vegetarian diet. 14 refs., 2 figs.

  6. 18F-FDG PET/CT Findings in Multicentric Reticulohistiocytosis.

    PubMed

    Zhang, Bing; Zhou, Hui; Han, Jiande; Shi, Xinchong; Zhang, Xiangsong

    2016-04-01

    Multicentric reticulohistiocytosis is a rare systemic inflammatory disease of unknown etiology characterized by the infiltration of histiocytes and multinucleated giant cells into multiple systems. The definitive diagnosis depends on biopsy of the affected tissues. Here, we report the F-FDG PET/CT findings of a 62-year-old man with multicentric reticulohistiocytosis. Increased FDG uptake was observed in cutaneomucosal papules, surrounding tissues of many joints, multiple muscles, and lymph nodes. PMID:26571445

  7. Total pancreatectomy and islet autotransplantation for chronic pancreatitis: spectrum of postoperative CT findings.

    PubMed

    Haider, Maera; Makary, Martin A; Singh, Vikesh K; Hirose, Kenzo; Fishman, Elliot K; Zaheer, Atif

    2015-10-01

    Improved laboratory methods for preparing islets for autotransplantation and postoperative care for the apancreatic patient have led to a surge in centers performing total pancreatectomy with islet autotransplantation. Accordingly, imaging in this patient population is increasingly being performed. The purpose of this article is to review the expected normal postoperative findings unique to the procedure and common complications on dual phase CT in the immediate postoperative and long-term periods. PMID:26070749

  8. 18F-fluoride PET/CT aspect of an unusual case of Erdheim-Chester disease with histologic features of Langerhans cell histiocytosis.

    PubMed

    Caoduro, Ccile; Ungureanu, Constantin Marius; Rudenko, Boris; Angoue, Orland; Blagosklonov, Oleg; Paycha, Frdric; Boulahdour, Hatem

    2013-07-01

    We report the case of a 63-year-old woman with Erdheim-Chester disease (ECD) and histologic features of Langerhans cell histiocytosis, both extremely rare histiocytic proliferations responsible of skeletal and extraskeletal involvement. 18F-Fluoride PET/CT revealed multiple intense focal uptake scattered throughout the skeleton. We also performed an 18F-FDG PET/CT which point out visceral and vascular involvement. This case illustrates the interest of PET/CT in ECD, a rare polymorphus and systemic disease, and in our knowledge, this is the first reported illustration of 18F-fluoride PET/CT findings in this pathology. PMID:23603579

  9. Unusually located osteoid osteomas.

    PubMed

    Pikoulas, C; Mantzikopoulos, G; Thanos, L; Passomenos, D; Dalamarinis, C; Glampedaki-Dagianta, K

    1995-07-01

    The files of 12 patients (aged 12-33 years) with an equal number of surgically proven osteoid osteomas (OOs) were reviewed in attempt to find a diagnostic algorithm in cases of unusually located OOs. Plain radiography (PR) and thin collimation computed tomography (CT) had been performed in all patients, while bone scintigraphy (BS) had been performed in eight and magnetic resonance imaging (MRI) in two. The OOs were located at juxta- or intra-articular sites, except for one located at the left neck of the L4 vertebra. The diagnosis based on the MRI examinations was synovitis. BS showed increased accumulation of the radioisotope at the site of the lesions, without the 'double density' sign. PR showed the nidus of OO in only six patients, whereas CT located the nidus in all patients. In conclusion, we believe that when an OO is clinically suspected at an unusual location, CT should be performed in all cases, even when a lesion is depicted by PR and BS, because CT will not only locate the nidus but will also provide a precise anatomy of the area around the nidus and help in therapeutic decision making and surgical planning. MRI can be misleading and must not be used in the initial assessment of a possible osteoid osteoma. PMID:7588866

  10. Radiation-induced sarcoma of bone: CT findings in 19 cases

    SciTech Connect

    Lorigan, J.G.; Libshitz, H.I.; Peuchot, M. )

    1989-10-01

    We reviewed the CT findings in 19 cases of radiation-induced sarcoma of bone. The latent period before development of the sarcoma ranged from 5 to 50 years (mean, 17 years). In all 19 lesions, a soft-tissue extraosseous component was seen on CT, and 18 of them had associated bone destruction. Expansion of the affected bone and tumor-matrix mineralization each were present in 10 patients, but occurred together in only five patients. Periosteal reaction was seen in five patients, one of whom had an associated fracture. Radiation osteitis could not be identified on CT scans in the affected bone of any of the patients when tumor was present, but it was present in contiguous bone in two patients and had been shown 6 years before tumor became apparent in the affected bone in one other patient. Radiation-induced sarcoma of bone should be considered when bone destruction and an associated soft-tissue mass are shown on CT, or when changes occur in the appearance of previously stable irradiated bone.

  11. Unusual cutaneous findings of urticaria pigmentosa and telangiectasia macularis eruptiva perstans associated with marked myelofibrosis.

    PubMed

    Turchin, Irina; Barankin, Benjamin; Schloss, Eric

    2006-10-01

    Mastocytosis is a heterogeneous group of disorders characterized by mast cell hyperplasia in the bone marrow, liver, spleen, lymph nodes, gastrointestinal tract, and skin. We present a patient with malignant mastocytosis of 11 years' duration. This case highlights the cutaneous findings of mastocytosis with systemic involvement, yet the patient maintains a relatively normal lifestyle with only minimal discomfort and only borderline normochromic anemia. Thus his course is not truly that of malignant mastocytosis but of indolent systemic mastocytosis with cutaneous findings of telangiectasia macularis eruptiva perstans (TMEP). PMID:17040445

  12. Internal Hernias in the Era of Multidetector CT: Correlation of Imaging and Surgical Findings.

    PubMed

    Doishita, Satoshi; Takeshita, Tohru; Uchima, Yasutake; Kawasaki, Masayasu; Shimono, Taro; Yamashita, Akiyoshi; Sugimoto, Michiko; Ninoi, Teruhisa; Shima, Hideki; Miki, Yukio

    2016-01-01

    Clinical diagnosis of internal hernias is challenging because of their nonspecific signs and symptoms. Many types of internal hernias have been defined: paraduodenal, small bowel mesentery-related, greater omentum-related, lesser sac, transverse mesocolon-related, pericecal, sigmoid mesocolon-related, falciform ligament, pelvic internal, and Roux-en-Y anastomosis-related. An internal hernia is a surgical emergency that can develop into intestinal strangulation and ischemia. Accurate preoperative diagnosis is crucial for appropriate management. Multidetector computed tomography (CT), with its thin-section axial images, high-quality multiplanar reformations, and three-dimensional images, currently plays an essential role in preoperative diagnosis of internal hernias. The diagnostic approach to internal hernias at multidetector CT includes detecting an intestinal closed loop, identifying the hernia orifice, and analyzing abnormal displacement of surrounding structures and key vessels around the hernia orifice and hernia sac. At each step, multidetector CT can depict pathognomonic findings. A saclike appearance suggests an intestinal closed loop in several types of internal hernias. Convergence, engorgement, and twisting of mesenteric vessels in the hernia orifice can be seen clearly at multidetector CT, especially with use of multiplanar reformations. For definitive diagnosis of an internal hernia, analysis of displacement of anatomic landmarks around the hernia orifice is particularly important, and thin-section images provide the required information. Detailed knowledge of the anatomy, etiology, and imaging landmarks of the various hernia types is also necessary. Familiarity with the appearances of internal hernias at multidetector CT allows accurate and specific preoperative diagnosis. (©)RSNA, 2015. PMID:26587890

  13. Unusual Malignant Solid Neoplasms of the Kidney: Cross-Sectional Imaging Findings

    PubMed Central

    Karaosmano?lu, Ali Devrim; Shirkhoda, Ali; Ozmen, Mustafa; Hahn, Peter F.

    2015-01-01

    Malignant kidney neoplasms are the most frequently encountered solid kidney masses. Although renal cell carcinoma is the major renal malignancy, other solid malignant renal masses should be considered in the differential diagnosis of solid renal masses that do not contain a macroscopic fatty component. In this pictorial essay, we present the imaging findings of a primitive neuroectodermal tumor, primary liposarcoma of the kidney, primary neuroendocrine tumor, leiomyosarcoma, synovial sarcoma, malignant fibrous histiocytoma, sclerosing fibrosarcoma and renal metastasis of osteosarcoma. PMID:26175585

  14. Unusual Malignant Solid Neoplasms of the Kidney: Cross-Sectional Imaging Findings.

    PubMed

    Karaosmano?lu, Ali Devrim; Onur, Mehmet Ruhi; Shirkhoda, Ali; Ozmen, Mustafa; Hahn, Peter F

    2015-01-01

    Malignant kidney neoplasms are the most frequently encountered solid kidney masses. Although renal cell carcinoma is the major renal malignancy, other solid malignant renal masses should be considered in the differential diagnosis of solid renal masses that do not contain a macroscopic fatty component. In this pictorial essay, we present the imaging findings of a primitive neuroectodermal tumor, primary liposarcoma of the kidney, primary neuroendocrine tumor, leiomyosarcoma, synovial sarcoma, malignant fibrous histiocytoma, sclerosing fibrosarcoma and renal metastasis of osteosarcoma. PMID:26175585

  15. An Unusual Case of Laryngeal Paraganglioma in a Patient with Carotid Body Paraganglioma: Multimodality Imaging Findings

    PubMed Central

    Dogan, Serap; Senol, Serkan; Imamoglu, Hakan; Abdulrezzak, Ummuhan; Ekinci, Afra; Yuce, Imdat; Ozturk, Mustafa

    2015-01-01

    Multiple paragangliomas of the head and neck are rare conditions. Carotid paragangliomas are most common multiple paragangliomas. Laryngeal paragangliomas are very rare neuroendocrine tumors and usually are seen as symptomatic solitary lesions. We present multimodality imaging findings of incidentally detected laryngeal paraganglioma in a woman with synchronous carotid body paraganglioma and positive family history. To the best of our knowledge, this is the first case of laryngeal and carotid body paragangliomas in a patient with positive family history. Radiologists should keep in mind that paragangliomas may occur in various locations as multiple tumors. PMID:26649218

  16. Oral mucosal involvement and petechial lesions: a SDRIFE case with unusual findings.

    PubMed

    Karadag, Ayse Serap; Ozlu, Emin; Akdeniz, Necmettin; Uzuncakmak, Tugba Kevser; Turkoglu, Zafer; Ozkanli, Seyma; Zemheri, Ebru

    2016-06-01

    Symmetrical drug-related intertriginous and flexural exanthema (SDRIFE) is a type IV hypersensitivity reaction characterized by a symmetrical erythematous rash in the gluteal and intertriginous areas. SDRIFE was previously considered to be the same presentation as Baboon Syndrome, however, has been suggested to be a different entity in the recent publications. The lesions are generally maculopapular and there is no mucosal involvement. To date, no case with petechial findings and mucosal involvement has been reported in the literature. The present study reports a SDRIFE case with a symmetrical erythematous petechial rash and oral mucosal involvement after taking oral amoxicillin. PMID:26339719

  17. Unusual Endoscopic Findings in Children: Esophageal and Gastric Polyps: Three Cases Report.

    PubMed

    Diaconescu, Smaranda; Miron, Ingrith; Gimiga, Nicoleta; Olaru, Claudia; Ioniuc, Ileana; Ciongradi, Iulia; Sarbu, Ioan; Stefanescu, Gabriela

    2016-01-01

    Isolated polyps of the upper digestive tract are rarely diagnosed in children, being usually an incidental finding during endoscopic exploration.The diagnostic, therapy, and outcome of these lesions are based on endoscopy and pathology.In a 5-year period, clinical features, topography, size, pathology, therapeutics, and progression of esophagogastric polyps founded in children addressed to our pediatric gastroenterology unit were studied.The authors encountered 3 lesions in teenagers aged 13 to 17 years two males (2M), from a total number of 2140 upper digestive endoscopies (0.14%). All patients presented with pirosis, epigastric pain, and vomits; one of the children had end-stage renal disease and Kabuki syndrome. Endoscopic and pathologic findings were 2 esophageal polyps, an inflammatory one, and another containing goblet cells and a double-headed hyperplastic gastric polyp. Two patients received proton pump inhibitors without any improvement in subsequent endoscopic evaluations.The difficulties related to age group, underlying conditions, debatable response to acid suppression, and limited experience in pediatric therapeutic endoscopy selected significantly the effectiveness of treatment.The rarity of these lesions requires an individualized management, the endoscopic diagnostic, and therapeutic gesture depending on the symptoms, type, location, comorbidities, and team experience. PMID:26817898

  18. Phosphaturic mesenchymal tumour mixed connective tissue variant: report of three cases with unusual histological findings

    PubMed Central

    Shustik, David A; Ng, David CE; Sittampalam, Kesavan

    2015-01-01

    Phosphaturic mesenchymal tumour mixed connective tissue variant (PMTMCT) is a rare tumour occurring in bone and soft tissue that usually behaves in a benign manner. Elaboration of biologically active substances by this tumour gives rise to a paraneoplastic syndrome known as oncogenic osteomalacia, manifesting clinically as bone pain, generalized weakness and pathological fractures. Recognition of PMTMCT and its associated syndrome is important, as resection of the tumour in most instances results in prompt resolution of symptoms. Previously reported cases of this tumour have emphasized the consistent presence of certain histological features that are considered prerequisite for making the diagnosis of PMTMCT. We describe three cases of PMTMCT, of which two first presented with progressive symptoms of osteomalacia and one remained clinically silent aside from the symptom of a palpable lump. Our cases highlight the wide-ranging histological patterns displayed by these tumours, and draw attention to certain microscopic findings that until now have been given little if any mention. Tentacular growth pattern and satellite nodules appear to be common findings in PMTMCTs, and can make complete surgical excision of these tumours challenging. The ability of this otherwise histologically benign tumour to permeate vascular spaces has to our knowledge never been described previously. One tumour lacked the characteristic calcifying matrix of PMTMCT, suggesting that in some tumours this defining feature may be focal if not entirely absent. PMTMCT shares features with and can resemble a variety of bone and soft tissue neoplasms, requiring the surgical pathologist to be familiar with this entity. PMID:26261662

  19. An unusual autopsy case of cytokine storm-derived influenza-associated encephalopathy without typical histopathological findings: autopsy case report.

    PubMed

    Nara, Akina; Nagai, Hisashi; Yamaguchi, Rutsuko; Yoshida, Ken-ichi; Iwase, Hirotaro; Mizuguchi, Masashi

    2015-03-01

    Cytokine storm-derived influenza-associated encephalopathy is a severe complication, affecting not only the brain but also multiple systemic organs including the heart and lungs. Hundreds of Japanese children are afflicted by influenza-associated encephalopathy every year. Influenza-associated encephalopathy can be diagnosed by pathological changes, such as advanced brain edema and disruption of astrocytic projections, which is known as clasmatodendrosis. In the present case, despite the absence of significant histopathological findings in the brain, the diagnosis of influenza-associated encephalopathy was made on the basis of autopsy findings such as brain swelling, pathological findings including diffuse alveolar damage, and increase in the concentrations of interleukin-6 in both the serum and cerebrospinal fluid. In this case, the interval from high fever to death was approximately 7 hours and may have been too short for histopathological features to develop. This is an unusual autopsy case of cytokine storm-derived influenza-associated encephalopathy without typical histopathological findings. PMID:25376710

  20. Unusual Larva in the CSF and Unique MRI Findings in a Case of Eosinophilic Meningitis

    PubMed Central

    Rai, Santosh; Madi, Deepak; Pai, Shivanand; Baliga, Shrikala

    2014-01-01

    Eosinophilic meningitis may be caused by non-infectious and infectious agents. Angiostrongylus cantonensis is the commonest causative agent of eosinophilic meningitis. Rats are the primary hosts of this parasite. Humans get infected by ingestion of raw or inadequately cooked hosts (snails or monitor lizard) or food contaminated with the infective third-stage larvae. A 16-year-old boy was admitted to our hospital with history of fever, headache, and altered sensorium. Magnetic resonance imaging of the brain showed unique findings. Cerebrospinal fluid (CSF) examination showed eosinophilia and the CSF wet mount identified a larva. Patient history revealed ingestion of monitor lizard 2 weeks prior to onset of symptoms. Hence, a diagnosis of eosinophilic meningitis caused by A. cantonensis was made. He was treated with oral albendazole and steroids, resulting in gradual improvement. A. cantonensis as a cause of eosinophilic meningitis is a possibility in patients who present with headache and vomiting after eating raw meat (monitor lizard). To the best of our knowledge, this is a very rare case being reported from India where the larva was identified during the microscopic examination of the CSF. PMID:25806134

  1. Unusual Larva in the CSF and Unique MRI Findings in a Case of Eosinophilic Meningitis.

    PubMed

    Rai, Santosh; Madi, Deepak; Pai, Shivanand; Baliga, Shrikala

    2014-01-01

    Eosinophilic meningitis may be caused by non-infectious and infectious agents. Angiostrongylus cantonensis is the commonest causative agent of eosinophilic meningitis. Rats are the primary hosts of this parasite. Humans get infected by ingestion of raw or inadequately cooked hosts (snails or monitor lizard) or food contaminated with the infective third-stage larvae. A 16-year-old boy was admitted to our hospital with history of fever, headache, and altered sensorium. Magnetic resonance imaging of the brain showed unique findings. Cerebrospinal fluid (CSF) examination showed eosinophilia and the CSF wet mount identified a larva. Patient history revealed ingestion of monitor lizard 2 weeks prior to onset of symptoms. Hence, a diagnosis of eosinophilic meningitis caused by A. cantonensis was made. He was treated with oral albendazole and steroids, resulting in gradual improvement. A. cantonensis as a cause of eosinophilic meningitis is a possibility in patients who present with headache and vomiting after eating raw meat (monitor lizard). To the best of our knowledge, this is a very rare case being reported from India where the larva was identified during the microscopic examination of the CSF. PMID:25806134

  2. Electrocardiography in conscious releasable Andean condors (Vultur gryphus): reference panel and unusual findings.

    PubMed

    Wiemeyer, Guillermo M; Lambertucci, Sergio A; Bianchini, Laura Torres; Belerenian, Guillermo

    2013-01-01

    Electrocardiography is a useful tool when included in healthcare protocols and is increasingly utilized for monitoring wild birds. However, the lack of reference data for many species is limiting the clinical value of this technique. In this study 26 Andean condors (Vultur gryphus) coming from rehabilitation and captive breeding programs were examined to determine electrocardiographic references prior to being released. Standard bipolar (I, II, and III) and augmented unipolar limb (aVR, aVL, and aVF) leads were recorded with birds under physical restraint. Five beats were analyzed on Lead II at 50?mm/sec and 1?cm?=?1?mV to determine QRS complex morphology, cardiac rhythm, heart rate, P, PR, R, S, QRS, T, QT, and ST amplitude and/or duration. P and T wave configuration was determined for all leads, and Mean Electrical Axis (MEA) in the frontal plane was determined using leads I and III. Cardiac rhythm corresponded to regular sinus rhythm in 42% of the birds, with a relevant rate of sinus arrhythmia in 58%, and rS as the most common pattern (42%) for QRS complex in lead II. We found an influence of age and heart rate but not of sex on several ECG waves and intervals. Relevant ECG findings for studied Andean condors include a high rate of T(a), R', and U wave detection. Waves T(a) and R' were considered non-pathological, while the significance of U waves remains unclear. Our results provide a useful reference to improve clinical interpretation of full electrocardiographic examination in Andean condors. PMID:23386535

  3. Primary neoplasms of peritoneal and sub-peritoneal origin: CT findings.

    PubMed

    Pickhardt, Perry J; Bhalla, Sanjeev

    2005-01-01

    Peritoneal carcinomatosis is a common metastatic manifestation of many organ-based malignancies, particularly carcinomas of the gastrointestinal tract and ovaries. Primary neoplasms of peritoneal and sub-peritoneal origin occur much less frequently than metastatic peritoneal involvement from a known or occult primary tumor; however, these rare primary lesions (peritoneal mesothelioma, papillary serous carcinoma, desmoplastic small round cell tumor, benign and malignant mesenchymal tumors, lymphoproliferative disorders) are often first detected at computed tomography (CT) and should be considered in the absence of a known or suspected organ-based malignancy. A precise diagnosis based on imaging findings alone is often not possible. Furthermore, distinguishing a benign from a malignant process and a primary from a metastatic process is also challenging. Nevertheless, CT features combined with the patient's relevant clinical and demographic data can help narrow the differential diagnosis for a peritoneum-based neoplasm in many cases. CT is useful not only for the detection, characterization, and staging of primary neoplasms of peritoneal and subperitoneal origin, but also for guiding biopsy for tissue diagnosis. PMID:16009819

  4. CT findings of the main pathological conditions associated with horseshoe kidneys

    PubMed Central

    Schiappacasse, G; Soffia, P; Silva, C S; Zilleruelo, N

    2015-01-01

    Horseshoe kidney (HSK) is the most common renal fusion anomaly, with a prevalence of 0.25% among the general population. It consists of kidney fusion across the midline. HSK can be present as an isolated condition in 30%, but there is a wide variety of associated abnormalities. The most frequent include ureteropelvic obstruction, lithiasis and infections. There is also a higher risk of kidney lesions in trauma and an increased incidence of malignancies. Awareness of embryology and anatomy is essential to assess and understand the complications affecting HSK. CT is an excellent method for identification of its main findings. PMID:25375751

  5. Bilateral alien hand syndrome in cerebrovascular disease: CT, MR, CT angiography, and 99mTc-HMPAO-SPECT findings.

    PubMed

    Serrano-Vicente, Justo; Duran-Barquero, Carmen; Garcia-Bernardo, Lucia; Dominguez-Grande, Maria Luz; Infante-Torre, Jose Rafael; Rayo-Madrid, Juan Ignacio

    2015-03-01

    We report a 65-year-old man with a right cerebral infarction that occurred 15 years ago and a residual left hemiparesis that began with progressive contralateral hemiparesis. During the hospitalization, the patient developed a bilateral alien hand syndrome. Urgent CT, MR, CT angiography, and brain perfusion SPECT were performed that revealed an old right cerebral infarction and a new ischemic lesion in left parietal lobe and adjacent brain territories. PMID:25546190

  6. Contrast enhanced multi-detector CT and MR findings of a well-differentiated pancreatic vipoma.

    PubMed

    Camera, Luigi; Severino, Rosa; Faggiano, Antongiulio; Masone, Stefania; Mansueto, Gelsomina; Maurea, Simone; Fonti, Rosa; Salvatore, Marco

    2014-10-28

    Pancreatic vipoma is an extremely rare tumor accounting for less than 2% of endocrine pancreatic neoplasms with a reported incidence of 0.1-0.6 per million. While cross-sectional imaging findings are usually not specific, exact localization of the tumor by means of either computed tomography (CT) or magnetic resonance (MR) is pivotal for surgical planning. However, cross-sectional imaging findings are usually not specific and further characterization of the tumor may only be achieved by somatostatin-receptor scintigraphy (SRS). We report the case of a 70 years old female with a two years history of watery diarrhoea who was found to have a solid, inhomogeneously enhancing lesion at the level of the pancreatic tail at Gadolinium-enhanced MR (Somatom Trio 3T, Siemens, Germany). The tumor had been prospectively overlooked at a contrast-enhanced multi-detector CT (Aquilion 64, Toshiba, Japan) performed after i.v. bolus injection of only 100 cc of iodinated non ionic contrast media because of a chronic renal failure (3.4 mg/mL) but it was subsequently confirmed by SRS. The patient first underwent a successful symptomatic treatment with somatostatin analogues and was then submitted to a distal pancreasectomy with splenectomy to remove a capsulated whitish tumor which turned out to be a well-differentiated vipoma at histological and immuno-histochemical analysis. PMID:25349667

  7. Prediction of intracranial findings on CT-scans by alternative modelling techniques

    PubMed Central

    2011-01-01

    Background Prediction rules for intracranial traumatic findings in patients with minor head injury are designed to reduce the use of computed tomography (CT) without missing patients at risk for complications. This study investigates whether alternative modelling techniques might improve the applicability and simplicity of such prediction rules. Methods We included 3181 patients with minor head injury who had received CT scans between February 2002 and August 2004. Of these patients 243 (7.6%) had intracranial traumatic findings and 17 (0.5%) underwent neurosurgical intervention. We analyzed sensitivity, specificity and area under the ROC curve (AUC-value) to compare the performance of various modelling techniques by 10 × 10 cross-validation. The techniques included logistic regression, Bayes network, Chi-squared Automatic Interaction Detection (CHAID), neural net, support vector machines, Classification And Regression Trees (CART) and "decision list" models. Results The cross-validated performance was best for the logistic regression model (AUC 0.78), followed by the Bayes network model and the neural net model (both AUC 0.74). The other models performed poorly (AUC < 0.70). The advantage of the Bayes network model was that it provided a graphical representation of the relationships between the predictors and the outcome. Conclusions No alternative modelling technique outperformed the logistic regression model. However, the Bayes network model had a presentation format which provided more detailed insights into the structure of the prediction problem. The search for methods with good predictive performance and an attractive presentation format should continue. PMID:22026551

  8. Tuberculous spondylodiscitis in a patient with a sickle-cell disease: CT findings

    PubMed Central

    Krupniewski, Leszek; Palczewski, Piotr; Go??biowski, Marek; Kosi?ska-Kaczy?ska, Katarzyna

    2012-01-01

    Summary Background: Although sickle-cell anemia (SCA) is common in black Americans, Sub-Saharan Africa and in the Mediterranean area, the disease is rare in the temperate climate zone. The manifestations of the disease are related mainly to the production of abnormal hemoglobin that leads to organ ischemia and increased susceptibility to infection caused by functional asplenia. Case Report: The authors present CT findings in a 39-year-old black woman diagnosed due to abdominal pain, lymphadenopathy and fever. CT of the thorax and abdomen demonstrated changes in the liver, spleen, and skeletal system suggestive of SCA complicated with spondylodiscitis in the thoracic spine. Discussion: Hepatomegaly and small calcified spleen are typical findings in older homozygotic patients with SCA. The lesions in the skeleton may be related either to intramedullary hematopoiesis or osteonecrosis and osteomyelitis. In the latter case, diffuse osteosclerosis and H-shaped vertebrae are most typical. Tuberculous spondylodiscitis is characterized by the location in the thoracic region, preferential involvement of anterior elements, relative sparing of intervertebral discs, and cold abscesses. PMID:22802871

  9. CT findings in malignant pleural mesothelioma related to nonoccupational exposure to asbestos and fibrous zeolite (erionite)

    SciTech Connect

    Erzen, C.; Eryilmaz, M.; Kalyoncu, F.; Bilir, N.; Sahin, A.; Baris, Y.I. )

    1991-03-01

    Endemic malignant pleural mesothelioma (MPM) in Turkey is related to two mineral fibers, tremolite asbestos and fibrous zeolite (erionite). Thirteen cases of MPM from the Cappadocian area, where the soil is rich in erionite, and 29 cases of MPM, from villages whose occupants have high asbestos exposure, were examined by CT. The CT findings of the two groups of MPM were compared with respect to the configuration of the pleural lesions, stage of disease, fissural involvement, pleural effusion, presence of calcified pleural plaques, and chronic fibrosing pleuritis. In erionite-related MPM the pleural lesions were flat and smooth in 69.1%; in asbestos-related MPM the lesions were nodular in 55.1%. Stage IV disease, calcified pleural plaques, and chronic fibrosing pleuritis were more common in the erionite-related MPM. The rest of the findings were similar in both groups. The early radiological diagnosis of erionite-related MPM may be even more difficult because of the similarity of the pleural lesions to chronic fibrosing pleuritis.

  10. Unusual finding of concrescence.

    PubMed

    Palermo, Daniel; Davies-House, Ayisha

    2016-01-01

    Concrescence is a rare dental anomaly whereby adjacent teeth are united by cementum. It has been reported to occur in around 0.8% of permanent dental extractions and a correct diagnosis prior to surgical intervention is important to ensure that patients can make an informed decision about their treatment and to reduce the potential for dentolegal action against the responsible clinician. An 83-year-old woman was referred to the Oral and Maxillofacial Surgery Department at the Wirral University Teaching Hospital, for extraction of her upper left first molar tooth. The operator noted that, when the upper left first molar was extracted, the upper left second molar tooth was also removed. Clinically, the roots of the adjacent teeth appeared fused and a diagnosis of concrescence was established. The patient was informed of the complication and provided with a 1-week review appointment, at which stage she was discharged. PMID:27009195

  11. The thyroid and parathyroid glands. CT and MR imaging and correlation with pathology and clinical findings.

    PubMed

    Weber, A L; Randolph, G; Aksoy, F G

    2000-09-01

    Thyroid imaging approach is based on the preliminary clinical evaluation. Lesions that are smaller than 2 cm should be assessed with US, which is capable of discriminating masses as small as 2 mm and distinguishing solid from cystic nodules. US-guided FNAB provides tissue for cytologic examination of thyroid nodules. CT and MR imaging are indicated for larger tumors (greater than 3 cm diameter) that extend outside the gland to adjoining structures, including the mediastinum, and retropharyngeal region. Metastatic lymph nodes in the neck and invasion of the aerodigestive tract are also in the realm of CT and MR imaging. Thyroid nodules are categorized on scintigraphy as hot or cold nodules. Hot nodules are rarely malignant, whereas cold nodules have an incidence of 10% to 20% of malignancy. Calcifications (amorphous, globular, nodular, and linear) occur in adenomas and carcinomas and have no differential diagnostic features except for psammomatous calcifications, which are a pathognomonic finding in papillary carcinomas and a small percentage of medullary carcinomas. Papillary carcinoma is the most common malignant tumor (80%) followed by follicular (20% to 25%); medullary (5%); undifferentiated; anaplastic carcinomas (< 5%); lymphoma (5%); and metastases. Lymph node metastases are common in papillary carcinoma, 50% at presentation, and less common in follicular carcinomas. The metastatic nodes in papillary carcinoma may enhance markedly (hypervascular); show increased signal intensity on T1-weighted images (increased thyroglobulin content or hemorrhage); and reveal punctate calcifications. Localized invasion of the larynx, trachea, and esophagus occurs predominantly in papillary and follicular carcinomas; the incidence is less than 5%. Ectopic thyroid tissue may be encountered in the tongue (foramen cecum); along the midline between posterior tongue and isthmus of thyroid gland; lateral neck; mediastinum; and oral cavity. Goiter and malignant tumors, notably papillary carcinoma, may develop in ectopic thyroid tissue. Carcinomas may also arise in thyroglossal duct cysts, which develop from duct remnants between the foramen cecum and thyroid isthmus. Infectious disease of the thyroid gland is not common and the CT and MR imaging findings are similar as described under neck infection. Other types of inflammatory disorders including Hashimoto's thyroiditis, granulomatous thyroiditis, and Riedel's struma display no specific imaging features. Imaging studies may, however, be indicated to confirm a suspected clinical diagnosis and assess compromise of the airway (Riedel's struma). HPT is a clinical diagnosis in which hypercalcemia is the most important finding. Parathyroid hyperplasia, adenoma, and carcinoma represent underlying lesions. To relieve the patient's symptoms surgical extirpation is indicated. The surgical success rate without imaging is 95%. The indications for imaging studies vary but it is generally agreed that reoperation after a previous failed surgical attempt and suspicion of an ectopic parathyroid adenoma should be investigated by imaging. These consist of US, nuclear medicine studies, CT and MR imaging. US and technetium sestamibi scanning have the highest accuracy rate for localizing an adenomatous gland at and near the thyroid gland. Ectopic adenomas, particularly if they are located in the mediastinum, are preferrably investigated with CT and MR imaging with gadolinium and fat suppression. Carcinomas and parathyroid cysts are optimally evaluated by CT and MR imaging. On MR imaging adenomas are low in signal intensity on T1-weighted images, high in signal intensity on T2-weighted images, and enhance post introduction of gadolinium. PMID:11054972

  12. Two unusual sites of cystic lymphangioma in a child: A report of imaging profile with surgical and histopathologic findings

    PubMed Central

    Riahinezhad, Maryam; Sarrami, Amir Hossein; Shariat, Zeinab; Taghizadeh, Faegheh

    2015-01-01

    Cystic lymphangioma (CL) is a benign lymphatic malformation mostly seen in the head and neck of neonates and infants. Abdominal CL is an unusual entity which may present in omentum, mesentery, abdominal wall, or solid organs. The authors present an unusual case with two separate abdominal cystic lymphangiomas. PMID:26436083

  13. Two unusual sites of cystic lymphangioma in a child: A report of imaging profile with surgical and histopathologic findings.

    PubMed

    Riahinezhad, Maryam; Sarrami, Amir Hossein; Shariat, Zeinab; Taghizadeh, Faegheh

    2015-01-01

    Cystic lymphangioma (CL) is a benign lymphatic malformation mostly seen in the head and neck of neonates and infants. Abdominal CL is an unusual entity which may present in omentum, mesentery, abdominal wall, or solid organs. The authors present an unusual case with two separate abdominal cystic lymphangiomas. PMID:26436083

  14. CT and MR Imaging Findings of Pancreatic Paragangliomas: A Case Report.

    PubMed

    Liang, Wenjie; Xu, Shunliang

    2016-03-01

    Previous studies on pancreatic paraganglioma, a rare neoplasm, have primarily reported its ultrasound and routine and contrast-enhanced computed tomography (CT) findings. To our knowledge, we are the first to report the contrast-enhanced magnetic resonance imaging (MRI) and diffusion-weighted imaging (DWI) sequence findings of pancreatic paraganglioma.A male patient, ages 41 years, was admitted to our hospital due to a pancreatic space-occupying lesion that had been present for more than 10 days. The patient had no obvious discomfort. He had a history of hypertension and hyperthyroidism. Physical examination revealed upper abdominal tenderness without a palpable mass. Routine and contrast-enhanced abdominal CT showed a soft tissue mass at the pancreatic head/uncinate process, with patchy calcification within the lesion. On a contrast-enhanced CT scan, severe enhancement of the mass in the arterial phase was noted, as was slightly reduced but still marked enhancement in the venous phase. The celiac trunk and superior mesenteric artery segment were wrapped by the tumor. Thickened, tortuous vessels were observed at the lesion edges, around which there were multiple enlarged lymph nodes. The main pancreatic duct was markedly dilated. Routine and contrast-enhanced pancreatic MRI demonstrated an abnormal nodular signal in the pancreatic head/uncinate process that was approximately 4.3 × 6.4 cm in size. T1-weighted imaging (T1WI) revealed hypointensity, whereas T2-weighted imaging (T2WI) revealed nonhomogeneous, slight hyperintensity. Patchy hypointensity on both T1WI and T2WI was observed within the lesion. DWI showed slight hyperintensity. Grossly heterogeneous enhancement of the mass was observed on a contrast-enhanced MRI scan, with the tumor wrapped around the adjacent vasculature, and multiple enlarged lymph nodes were observed peripherally. After preoperative preparation, the patient underwent pancreatoduodenectomy. Histopathology and immunohistochemistry of the resected tumor indicated pancreatic paraganglioma. After surgery, the patient recovered well, without presenting any recurrence or metastasis during short-term follow-up.For hypervascular pancreatic tumors on contrast-enhanced CT or MRI, and particularly those occurring in the pancreatic head, with a clear display of draining veins, the possibility of pancreatic paraganglioma should be considered. These tumors usually exhibit necrosis or cystic changes and are occasionally accompanied by calcification. PMID:26945413

  15. Early Head CT Findings Are Associated With Outcomes After Pediatric Out-of-Hospital Cardiac Arrest

    PubMed Central

    Starling, Rebecca M.; Shekdar, Karuna; Licht, Dan; Nadkarni, Vinay M.; Berg, Robert A.; Topjian, Alexis A.

    2015-01-01

    Objectives Head CT after out-of-hospital cardiac arrest is often obtained to evaluate intracranial pathology. Among children admitted to the PICU following pediatric out-of-hospital cardiac arrest, we hypothesized that loss of gray-white matter differentiation and basilar cistern and sulcal effacement are associated with mortality and unfavorable neurologic outcome. Design Retrospective, cohort study. Setting Single, tertiary-care center PICU. Patients Seventy-eight patients less than 18 years old who survived out-of-hospital cardiac arrest to PICU admission and had a head CT within 24 hours of return of spontaneous circulation were evaluated from July 2005 through May 2012. Interventions None. Measurements and Main Results Median time to head CT from return of spontaneous circulation was 3.3 hours (1.0, 6.0). Median patient age was 2.3 years (0.4, 9.5). Thirty-nine patients (50%) survived, of whom 29 (74%) had favorable neurologic outcome. Nonsurvivors were more likely than survivors to have 1) loss of gray-white matter differentiation (Hounsfield unit ratios, 0.96 [0.88, 1.07] vs 1.1 [1.07, 1.2]; p < 0.001), 2) basilar cistern effacement (93% vs 7%; p = 0.001; positive predictive value, 94%; negative predictive value, 59%), and 3) sulcal effacement (100% vs 0%; p ≤ 0.001; positive predictive value, 100%; negative predictive value, 68%). All patients with poor gray-white matter differentiation or sulcal effacement had unfavorable neurologic outcomes. Only one patient with basilar cistern effacement had favorable outcome. Conclusions Loss of gray-white matter differentiation and basilar cistern effacement and sulcal effacement are associated with poor outcome after pediatric out-of-hospital cardiac arrest. Select patients may have favorable outcomes despite these findings. PMID:25844694

  16. Unusual 131Iodine uptake in a joint demonstrated by SPECT/CT in a patient with differentiated thyroid cancer.

    PubMed

    Ciappuccini, Renaud; Aide, Nicolas; Mtayer, Laure; Bardet, Stphane

    2015-04-01

    An 84-year-old woman was referred for radioiodine ablation 2 months after total thyroidectomy for papillary thyroid cancer. Whole-body scan showed an 131Iodine focus in the left hand. 131Iodine uptake persisted after skin decontamination. SPECT/CT revealed focal uptake in the metacarpophalangeal joint of the thumb. Hybrid CT scan and medical history with clinical examination suggested osteoarthritis of the first metacarpophalangeal joint. PMID:25674862

  17. Epileptic seizures following ischaemic cerebral infarction. Clinical picture, CT findings and prognosis.

    PubMed

    Hornig, C R; Bttner, T; Hufnagel, A; Schrder-Rosenstock, K; Dorndorf, W

    1990-01-01

    Clinical, CT and EEG findings of 100 consecutive patients suffering from epileptic seizures following hemispheric cerebral infarction were evaluated retrospectively. All patients were followed up for an average of 49 months. Twelve patients suffered from cardiogenic brain embolism, 20 had an occlusive disease of the internal cerebral artery. Forty-seven patients had a single middle cerebral artery infarct, 6 each a posterior cerebral artery or watershed infarct. CT showed lacunes in only 6 cases, 8 had multiple larger infarcts and 27 were normal. Seventy-six patients suffered from generalized seizures, 54 from partial fits, predominantly focal motor seizures. Seventy-one patients had their first seizure within the 1st year after stroke, 30 within 2 weeks after the infarct. The interval between stroke and the first epileptic fit exceeded 1 year in the remaining 29 cases. If the first fit occurred in the acute phase after stroke, the risk of further ones was significantly lower than when the first fit occurred in the chronic stage. The frequency of fits mainly depended on the occurrence of epileptic potentials in the EEG and the interval between stroke and the first seizure. During follow-up 27 patients suffered a recurrent stroke, and 52 patients died. Cardiac failure was the predominant cause of death; only 4 patients died as a consequence of an epileptic fit. PMID:2144239

  18. CT Findings of Patients Treated with Irreversible Electroporation for Locally Advanced Pancreatic Cancer

    PubMed Central

    Akinwande, Olaguoke; Ahmad, Shakeeb S.; Van Meter, Tracy; Schulz, Brittany; Martin, Robert C. G.

    2015-01-01

    Introduction. In patients with locally advanced pancreatic cancer (LAPC), IRE has been shown to be safe for local disease control and palliation. As IRE continues to gain acceptance it is important to characterize the expected imaging findings. Materials and Methods. A review of our prospective soft tissue ablation registry from July 2010 to June 2013 was performed on patients who had undergone IRE for LAPC. Five masses treated with intraoperative IRE ablation for pancreatic tumors that underwent CT imaging before and after ablation were reviewed. Results and Discussion. Following IRE, the postablation bed is larger than the original ablated tumor. This ablation zone may get smaller in size (due to decreased edema and hyperemia) in the following months and more importantly remains stable provided there is no recurrence. In cases of recurrent disease there is increased size of the ablation bed, mass effect, and new or worsening vascular encasement or occlusion. Conclusion. CT imaging remains the best current imaging modality to assess post-IRE ablation changes. Serial imaging over at least 26 months must be employed to detect recurrence by comparing with prior studies in conjunction with clinical and serum studies. Larger imaging studies are underway to evaluate a more ideal imaging modality for this unique patient population. PMID:26649039

  19. Suture granuloma with false-positive finding on PET/CT after gastrectomy for gastric cancer.

    PubMed

    Tsujita, Eiji; Ikeda, Yasuharu; Kinjo, Nao; Yamashita, Yo-Ichi; Kumagai, Reiko; Taguchi, Ken-Ichi; Yamaguchi, Shohei; Minami, Kazuhito; Yamamoto, Manabu; Morita, Masaru; Toh, Yasushi; Okamura, Takeshi

    2015-11-01

    This study is a case report on a 49-year-old woman who had a gastrectomy and lymphadenectomy for pStage IIIa gastric cancer. Shortly after a 12-month course of adjuvant chemotherapy, CT showed a nodule adjacent to the gallbladder. High (18) F-fluorodeoxyglucose accumulation was detected, with a standardized uptake value of 10. Therefore, laparoscopic excision was performed for diagnosis and treatment. The histopathological finding was suture granuloma. Suture granulomas with high standardized uptake values on PET scans are uncommon and often cause surgeons to provide an inaccurate diagnosis. Our study suggests that suture granuloma should be included in the differential diagnosis of a new or recurrent mass detected in patients with a history of prior surgery; however, surgeons must bear in mind that false-positive fluorodeoxyglucose-PET results can be observed in suture granuloma. PMID:26708585

  20. Three-Dimensional CT Findings of Os Calcaneus Secundarius Mimicking a Fracture

    PubMed Central

    Bulut, Mehmet Deniz; Bora, Aydın; Gökalp, Mehmet Ata; Özkaçmaz, Sercan; Batur, Abdussamet

    2014-01-01

    Os calcaneus secundarius is one of several accessory ossicles of the foot that have been identified as normal variants of skeletal development. It may cause ankle pain and may mimic an avulsion fracture of the anterior calcaneal process. A twenty-year-old male was admitted to our institution with right ankle pain following an inversion injury. An axial CT image of the patient's right ankle revealed a shape with smooth and sharp margins, identified as a well-corticated bone fragment in the subtalar region. A diagnosis of an accessory ossicle, os calcaneus secundarius, was made based on radiographic findings. As a result of this case, it is recommended that potential locations of the accessory bones should be well understood in order to prevent misdiagnosis and inappropriate surgical procedures. Os calcaneus secundarius must be considered when an apparent bone fragment or a suspicious fracture line at the anterior region of os calcaneus is demonstrated. PMID:25610694

  1. CT detection of facial canal dehiscence and semicircular canal fistula: Comparison with surgical findings

    SciTech Connect

    Fuse, Takeo; Tada, Yuichiro; Aoyagi, Masaru; Sugai, Yukio

    1996-03-01

    The purpose of this study was to determine the accuracy of high resolution CT (HRCT) in the detection of facial canal dehiscence and semicircular canal fistula, the preoperative evaluation of both of which is clinically very important for ear surgery. We retrospectively reviewed the HRCT findings in 61 patients who underwent mastoidectomy at Yamagata University between 1989 and 1993. The HRCT images were obtained in the axial and semicoronal planes using 1 mm slice thickness and 1 mm intersection gap. In 46 (75%) of the 61 patients, the HRCT image-based assessment of the facial canal dehiscence coincided with the surgical findings. The data for the facial canal revealed sensitivity of 66% and specificity of 84%. For semicircular canal fistula. in 59 (97%) of the 61 patients, the HRCT image-based assessment and the surgical findings coincided. The image-based assessment in the remaining two patients, who both had massive cholesteatoma, was false-positive. HRCT is useful in the diagnosis of facial canal dehiscence and labyrinthine fistula, but its limitations should also be recognized. 12 refs., 3 figs., 6 tabs.

  2. CT enteroclysis/enterography findings in drug-induced small-bowel damage

    PubMed Central

    Shimizu, K; Hashimoto, S; Onoda, H; Washida, Y; Sakaida, I; Matsunaga, N

    2014-01-01

    Objective: To evaluate the CT enteroclysis (CTE)/enterography findings of patients with small-bowel mucosal damage induced by aspirin or non-steroidal anti-inflammatory drugs (NSAIDs) and to compare these findings with the duration of drug use and endoscopic findings. Methods: CTE findings of 11 patients (22 lesions) with drug-induced small-bowel damage were reviewed, including 8 NSAID users and 3 aspirin users. Three patients were short-term users (6 months or shorter) and eight were long-term users (3 years or longer). Nine patients also underwent videocapsule endoscopy (VCE) or double-balloon enteroscopy (DBE). Results: Small-bowel abnormalities were visible in 8 of 11 patients (73%) on CTE. Multiple lesions were seen in five patients, including all short-term users. Lesions were classified into three types. Type 1 (mucosal patchy enhancement) was found in four of eight patients (50%, 12 lesions) all were short-term users. Small erosions with mild oedema/redness were shown by DBE. Type 2 (homogeneous hyperenhancement) was found in two of eight patients (25%, four lesions) who were long-term users. Large ulcers with marked oedema/redness were shown by DBE. Type 3 (stratification enhancement) was found in four of eight patients (50%, six lesions), both short-term and long-term users. Annular or large ulcers with strictures were shown by VCE or DBE. Conclusion: On CTE, Type 1 lesions in patients with mostly short-term aspirin or NSAID use, Type 2 lesions in patients with long-term use and Type 3 lesions in both types of patients were detected. CTE may have usefulness for the detection of mild damage. Advances in knowledge: Small-bowel abnormalities owing to aspirin or NSAID present with three different patterns on CTE. PMID:25348282

  3. Value of CT angiography in anterior circulation large vessel occlusive stroke: Imaging findings, pearls, and pitfalls.

    PubMed

    Power, Sarah; McEvoy, Sinead H; Cunningham, Jane; Ti, Joanna P; Looby, Seamus; O'Hare, Alan; Williams, David; Brennan, Paul; Thornton, John

    2015-07-01

    Hyperacute stroke imaging is playing an increasingly important role in determining management decisions in acute stroke patients, particularly patients with large vessel occlusive stroke who may benefit from endovascular intervention. CT angiography (CTA) is an important tool in the work-up of the acute stroke patient. It reliably detects large occlusive thrombi in proximal cerebral arteries and is a quick and highly accurate method in identifying candidates for endovascular stroke treatment. In this article we review the imaging findings on CTA in acute large vessel occlusive stroke using a pictorial case based approach. We retrospectively reviewed CTA studies in 48 patients presenting with acute anterior circulation large vessel occlusive stroke who were brought for intra-arterial acute stroke intervention. We discuss and illustrate patterns of proximal intracranial arterial occlusion, collateralization to the occluded territory, as well as reviewing some important pearls, pitfalls and teaching points in CTA assessment of the acute stroke patient. Performed from the level of the aortic arch CTA also gives valuable information regarding the state of other vessels in the acute stroke patient, identifying additional significant vascular stenoses or occlusions, and as we illustrate, can demonstrate other clinically significant findings which may impact on patient management and outcome. PMID:25956493

  4. UNUSUAL FINDINGS IN ZEBRAFISH, DANIO RERIO, FROM TOXICOLOGICAL STUDIES AND THE ZEBRAFISH INTERNATIONAL RESOURCE CENTER DIAGNOSTIC SERVICE

    EPA Science Inventory

    A number of interesting and unusual lesions have been diagnosed in zebrafish that have been evaluated from toxicological studies or submitted as cases to the Diagnostic Service at Oregon State University. Lesions were observed in various wild-type and mutant lines of zebrafish an...

  5. Helical CT in renal transplantation: normal findings and early and late complications.

    PubMed

    Sebasti, C; Quiroga, S; Boy, R; Cantarell, C; Fernandez-Planas, M; Alvarez, A

    2001-01-01

    Over a 5-year period, 346 helical computed tomographic (CT) studies were performed in renal transplant recipients. Helical CT proved useful in this context by depicting parenchymal, perirenal, renal sinus, pyeloureteral, and vascular complications in great detail. CT often delineates fluid collections and their anatomic relationship to adjacent structures better than ultrasonography (US), particularly in obese patients. CT-guided puncture and drainage can be performed in cases in which US is deemed inadequate. CT angiography can depict arterial diseases such as stenosis, thrombosis, arteriovenous fistulas, aneurysms, and pseudoaneurysms in the graft artery and in the recipient iliac arterial system, thereby obviating conventional angiography in some cases. Helical CT with three-dimensional image reformatting allows accurate imaging of the entire course of ureteral and periureteral diseases (eg, hydronephrosis, ureteral leak and stricture, pyeloureteral obstruction). CT can be used in the confirmation and staging of malignancies of the renal parenchyma and urothelium. It is also helpful in evaluating associated disease in the native kidneys, acute and chronic rejection, graft embolization, and end-stage disease. Although US and nuclear medicine examination are the imaging modalities of choice in renal transplantation, helical CT is a valuable alternative when these techniques are inconclusive. PMID:11553819

  6. Acutely unstable cervical spine injury with normal CT scan findings: MRI detects ligamentous injury.

    PubMed

    Erwood, Andrew M; Abel, Taylor J; Grossbach, Andrew J; Ahmed, Raheel; Dahdaleh, Nader S; Dlouhy, Brian J

    2016-02-01

    MRI can detect ligamentous injury not detectable with CT scan. The authors present a trauma patient with normal CT imaging despite dislocation on standing radiograph. MRI detected disruption of the C5-C6 posterior ligamentous complex that requires surgery. PMID:26601812

  7. Thoracic findings of systemic diseases at high-resolution CT in children.

    PubMed

    Garca-Pea, Pilar; Boixadera, Helena; Barber, Ignasi; Toran, Nuria; Lucaya, Javier; Enrquez, Goya

    2011-01-01

    Pulmonary involvement in systemic diseases is common, but the radiographic appearance of early-stage pulmonary changes is often subtle. Computed tomography (CT) has higher sensitivity and specificity than radiography, and high-resolution CT is the method of choice for accurate assessment of diffuse parenchymal lung disease. Even with reductions in the peak voltage and tube charge to minimize the exposure of pediatric patients to radiation, CT performed with a meticulous acquisition technique can provide detailed information. In some cases, high-resolution CT may depict clinically silent lung lesions. The information provided by CT is invaluable for planning therapy in pediatric patients with pulmonary involvement in connective tissue disease (eg, juvenile rheumatoid arthritis, dermatomyositis, systemic sclerosis, systemic lupus erythematosus, or mixed connective tissue disease), vasculitis, a primary or acquired immune deficiency disorder, immotile cilia syndrome, cystic fibrosis, or Langerhans cell histiocytosis. PMID:21415192

  8. Study on Neurological Manifestations of Eclampsia & Findings of CT scan of Brain.

    PubMed

    Begum, F; Nahar, K; Ahmed, M U; Ferdousi, R A; Akter, F A; Rahman, M M

    2015-10-01

    This cross sectional study was carried out in the Department of Obstetrics & Gynaecology in Mymensingh Medical College Hospital during the period of January 2011 to December 2012 to evaluate neurological manifestations in eclampsia by CT scan of brain. A total 35 patients with eclampsia were studied, who underwent CT scan of brain in Radiology & Imaging Department of Mymensingh Medical College Hospital. The study patients were divided into two groups, those who had changes in brain on CT scan (Group A) & those who had no changes in brain on CT scan (Group B). Finally the study variables were compared between these two groups. Each selected patient fulfilling the criteria was sent to the department of Radiology & Imaging for CT scanning of brain. In antepartum cases of eclampsia CT scan of brain were done after delivery/ termination of pregnancy. In all cases, CT scan of brain was done within 72 hours of admission. Out of 35 patients total 85.72% had changes in brain on CT scan & 14.28% had no changes in brain on CT scan. Among them 45.72% patients had cerebral oedema, 37.14% had cerebral infarct & 2.86% patients had intracerebral haemorrhage. Comparison of neurological parameters were done & showed that there were statistically significant difference between the two groups regarding headache, visual disturbance, hypereflexia & depression of consciousness. There was no statistically significant difference regarding aphasia & hemiplegia between the two groups. So the CT scan of brain has been useful in demonstrating the lesion of brain in patients with eclampsia & also helpful to evaluate the neurological manifestations in eclampsia. PMID:26620005

  9. Monitoring the response of lymphoma patients to therapy: correlation of abdominal CT findings with clinical course and histologic cell type

    SciTech Connect

    Oliver, T.W. Jr.; Bernardino, M.E.; Sones, P.J. Jr.

    1983-10-01

    A review was made of 365 abdominal computed tomographic (CT) examinations in 125 patients with a histologic diagnosis of lymphoma who had undergone CT before and after therapy. Clinical correlation immediately preceding the follow-up CT examination was obtained in 100 patients. In these 100 patients, five distinct subgroups emerged: (a) reduction in extent of disease without changes in internal nodal characteristics; (b) reduction in extent of disease with change in internal nodal characteristics; (c) no change in extent of disease and no change in internal nodal characteristics; (d) no change in extent of disease but change in internal nodal charateristics; and (e) disease progression. Changes in internal nodal architecture consisted of diminished attenuation or mesenteric stranding. A 91% correlation existed between the CT findings and the clinical course. Of those patients with a worsening clinical course, and follow-up CT studies suggesting a stable or improved response to therapy, relapse in the majority (57%) involved the central nervous system. The authors conclude that limited abdominal CT examination is satisfactory in the posttherapy follow-up of lymphoma patients.

  10. An Unusual Case of Extraosseous Accumulation of Bone Scan Tracer in a Renal Calculus - Demonstration by SPECT-CT

    PubMed Central

    Joshi, Prathamesh Vijay; Lele, Vikram; Gandhi, Rozil

    2012-01-01

    Extraosseous localization of radioisotope, used in bone scan, in a variety of physiological and pathological conditions is a well-known phenomenon. The causes of extraosseous accumulation of bone-seeking radiotracers should be kept in mind when bone-imaging studies are reviewed to avoid incorrect interpretations. We report an extremely rare occurrence of extraosseous accumulation of bone scintigraphy tracer in a renal calculus, in a patient with adenocarcinoma of prostate, that was demonstrated by Single Photon Emission Computed Tomography and Computed Tomography (SPECT-CT) fusion imaging. PMID:22439128

  11. Impact of FDG-PET/CT on Radiotherapy Volume Delineation in Non-Small-Cell Lung Cancer and Correlation of Imaging Stage With Pathologic Findings

    SciTech Connect

    Faria, Sergio L. Menard, Sonia; Devic, Slobodan; Sirois, Christian; Souhami, Luis; Lisbona, Robert; Freeman, Carolyn R.

    2008-03-15

    Purpose: Fluorodeoxyglucose-positron emission tomography (FDG-PET)/computed tomography (CT) is more accurate than CT in determining the extent of non-small-cell lung cancer. We performed a study to evaluate the impact of FDG-PET/CT on the radiotherapy volume delineation compared with CT without using any mathematical algorithm and to correlate the findings with the pathologic examination findings. Methods and Materials: A total of 32 patients with proven non-small-cell lung cancer, pathologic specimens from the mediastinum and lung primary, and pretreatment chest CT and FDG-PET/CT scans were studied. For each patient, two data sets of theoretical gross tumor volumes were contoured. One set was determined using the chest CT only, and the second, done separately, was based on the co-registered FDG-PET/CT data. The disease stage of each patient was determined using the TNM staging system for three data sets: the CT scan only, FDG-PET/CT scan, and pathologic findings. Results: Pathologic examination altered the CT-determined stage in 22 (69%) of 32 patients and the PET-determined stage in 16 (50%) of 32 patients. The most significant alterations were related to the N stage. PET altered the TNM stage in 15 (44%) of 32 patients compared with CT alone, but only 7 of these 15 alterations were confirmed by the pathologic findings. With respect to contouring the tumor volume for radiotherapy, PET altered the contour in 18 (56%) of 32 cases compared with CT alone. Conclusion: The contour of the tumor volume of non-small-cell lung cancer patients with co-registered FDG-PET/CT resulted in >50% alterations compared with CT targeting, findings similar to those of other publications. However, the significance of this change is unknown. Furthermore, pathologic examination showed that PET is not always accurate and histologic examination should be obtained to confirm the findings of PET whenever possible.

  12. NIH study finds childhood CT scans linked to leukemia and brain cancer later in life

    Cancer.gov

    Children and young adults scanned multiple times by computed tomography (CT), a commonly used diagnostic tool, have a small increased risk of leukemia and brain tumors in the decade following their first scan.

  13. Malignant myoepithelioma arising in salivary tissue on the masseter muscle: US, CT, and MR findings

    SciTech Connect

    Martinoli, C.; Cittadini, G.; Derchi, L.E.; Rollandi, G.A.

    1996-01-01

    We report the US, CT, and MR appearances of a malignant myoepithelioma arising on the masseter muscle from aberrant salivary tissue, associated with postobstructive atrophy of the main parotid gland. 13 refs., 4 figs.

  14. CT and MR imaging findings of systemic complications occurring during pregnancy and puerperal period, adversely affected by natural changes

    PubMed Central

    Himoto, Yuki; Kido, Aki; Moribata, Yusaku; Yamaoka, Toshihide; Okumura, Ryosuke; Togashi, Kaori

    2015-01-01

    Dynamic physiological and anatomical changes for delivery may adversely induce various specific non-obstetric complications during pregnancy and puerperal period. These complications can be fatal to both the mother and the fetus, thus a precise and early diagnosis ensued by an early treatment is essential. Along with ultrasonography, computed tomography (CT) and magnetic resonance imaging (MRI) have assumed an increasing role in the diagnosis. This article aims to discuss the pathophysiology of these complications, the indications for CT and MRI, and the imaging findings.

  15. Kidney in danger: CT findings of blunt and penetrating renal trauma.

    PubMed

    Alonso, Raquel Cano; Nacenta, Susana Borruel; Martinez, Patricia Diez; Guerrero, Angel Sanchez; Fuentes, Carlos Garcia

    2009-11-01

    Approximately 10% of all significant blunt abdominal traumatic injuries manifest with renal injury, although it is usually minor. However, renal imaging is indicated in cases of gross hematuria, penetrating trauma with gross or microscopic hematuria, and blunt trauma and shock with gross or microscopic hematuria. Contrast material-enhanced computed tomography (CT) is the imaging modality of choice in the evaluation and management of renal trauma. Contrast-enhanced CT is readily available in emergency departments and can quickly and accurately depict renal injuries as well as associated injuries to other abdominal or retroperitoneal organs. In this way, contrast-enhanced CT provides the anatomic and functional information that is essential for accurate staging. In addition, CT can help detect active hemorrhage and urinary extravasation and is very useful in guiding transcatheter embolization and delineating preexisting disease entities that may predispose kidneys to posttraumatic hemorrhage. With the advent of multidetector CT, imaging is characterized by faster scanning times, increased volume coverage, and improved spatial and temporal resolution. The increased use of CT has been partially responsible for a growing trend toward conservative management of renal trauma, except in cases in which extensive urinary extravasation or devitalized areas of renal parenchyma are found and especially in those cases with associated injuries to other abdominal organs; these cases are particularly prone to complications and usually require surgery. PMID:19926761

  16. Transcatheter aortic valve replacement: postoperative CT findings of Sapien and CoreValve transcatheter heart valves.

    PubMed

    Salgado, Rodrigo A; Budde, Ricardo P J; Leiner, Tim; Shivalkar, Bharati; Van Herck, Paul L; Op de Beeck, Bart J; Vrints, Christiaan; Buijsrogge, Marc P; Stella, Pieter R; Rodrigus, Inez; Bosmans, Johan; Parizel, Paul M

    2014-10-01

    Transcatheter aortic valve replacement represents one of the most exciting medical technical developments in recent years, offering a much-needed therapeutic alternative for patients with severe aortic valve stenosis who, due to comorbidities and advanced age, are considered to be inoperable or at high surgical risk. The efficacy of this procedure compared with standard surgical intervention has been properly validated in multicenter randomized controlled trials (PARTNER A and B trials), leading to widespread clinical implementation, with over 50,000 procedures currently being performed worldwide each year. Although much of the attention has rightly focused on the potential role of computed tomography (CT) in the preprocedural assessment of the aortic root and the establishment of imaging-guided valve-sizing algorithms, less is known regarding the postprocedural CT characteristics of transcatheter heart valves (THVs). However, given the increasing worldwide recognition and clinical implementation of these devices, they will no doubt be encountered with increasing frequency in patients referred for thoracic CT, either for postprocedural evaluation of the aortic root or for unrelated reasons. Familiarity with these devices and their CT characteristics will increase diagnostic confidence and the value of the radiology report. The authors describe the physical and imaging properties of the currently commercially available THVs, their normal postprocedural imaging appearances, and potential complications that can be detected at CT. In addition, they discuss the relative strengths and weaknesses of CT and echocardiography in this setting. PMID:25310415

  17. The Sentinel Clot Sign: a Useful CT Finding for the Evaluation of Intraperitoneal Bladder Rupture Following Blunt Trauma

    PubMed Central

    Jeong, Yong Yeon; Chung, Tae Woong; Yoon, Woong; Kang, Heoung Keun; Kang, Taek Won; Shin, Hee Young

    2007-01-01

    Objective To evaluate the frequency and relevance of the "sentinel clot" sign on CT for patients with traumatic intraperitoneal bladder rupture in a retrospective study. Materials and Methods During a recent 42-month period, 74 consecutive trauma patients (45 men, 29 women; age range, 12-84 years; mean age, 50.8 years) with gross hematuria were examined by the use of intravenous contrast-enhanced CT of the abdomen and pelvis, followed by retrograde cystography. Contrast-enhanced CT scanning was performed by using a helical CT scanner. CT images were retrospectively reviewed in consensus by two radiologists. The CT findings including the sentinel clot sign, pelvic fracture, traumatic injury to other abdominal viscera, and the degree of intraperitoneal free fluid were assessed and statistically analyzed using the two-tailed χ2 test. Results Twenty of the 74 patients had intraperitoneal bladder rupture. The sentinel clot sign was seen for 16 patients (80%) with intraperitoneal bladder rupture and for four patients (7%) without intraperitoneal bladder rupture (p < 0.001). Pelvic fracture was noted in five patients (25%) with intraperitoneal bladder rupture and in 39 patients (72%) without intraperitoneal bladder rupture (p < 0.001). Intraperitoneal free fluid was found in all patients (100%) with intraperitoneal bladder rupture, irrespective of an associated intraabdominal visceral injury, whereas 19 (35%) of the 54 patients without intraperitoneal bladder rupture had intraperitoneal free fluid (p < 0.001). Conclusion Detection and localization of the sentinel clot sign abutting on the bladder dome may improve the accuracy of CT in the diagnosis of traumatic intraperitoneal bladder rupture, especially when the patients present with gross hematuria. PMID:18071279

  18. Qualitative evaluation of pulmonary CT angiography findings in pregnant and postpartum women with suspected pulmonary thromboembolism

    PubMed Central

    Moradi, Maryam; Monfared, Leyla Jalali

    2015-01-01

    Background: Considering the importance of using more appropriate imaging technique for accurate diagnosis of pulmonary thromboembolism (PTE) with less side effects, we aimed to evaluate the quality of pulmonary 64-multidetector computed tomographic (MDCT) angiography in pregnant and postpartum women with suspected PTE in Isfahan. Materials and Methods: In this descriptive study, radiological findings of pregnant and postpartum women with suspected PTE who underwent pulmonary 64-MDCT angiography were evaluated. Prevalence of PTE in pregnant and postpartum women, mean of pulmonary arteries density for right and left pulmonary arteries, and their lobar and segmental branches, diagnostic quality of the pulmonary arteries density and their scoring, frequency of diagnostic and nondiagnostic images, mean of radiation dose and mean of bolus time, and the correlation between the quality of the vascular density with the peak density of the pulmonary artery were determined. Results: In this study, 44 pregnant and postpartum women with suspected PTE were selected. The overall prevalence of PTE was 9.1% (4/44). PTE was diagnosed in 1 (3.7%) pregnant and 3 (17.5%) postpartum women (P = 0.14). Mean density of pulmonary trunk was 278.81 108.16 Hounsfield unit (HU) and 308.41 59.30 HU in pregnant and postpartum women, respectively. Mean of bolus timing, kilovoltage peak (kVp), tube current, and dose length product (DLP) were 12.53 2.36 s, 105.22 45.71 milliamperage (MA), 382.9 173.5 MA, and 317.98 78.92 mGy/cm, respectively. The rate of nondiagnostic images was 4.5%. Conclusion: Our findings indicated that pulmonary 64-MDCT angiography is an appropriate imaging method for diagnosing PTE in pregnant and postpartum women with suspected PTE. It seems that, using fast CT systems (64-MDCT), in accordance with high flow rate, high contrast medium concentration and low kVp could explain the obtained appropriate quality of images more efficiently than computed tomographic pulmonary angiography (CTPA). PMID:26941814

  19. Fat Necrosis of the Breast: A Pictorial Review of the Mammographic, Ultrasound, CT, and MRI Findings with Histopathologic Correlation

    PubMed Central

    Kerridge, William D.; Kryvenko, Oleksandr N.; Thompson, Afua; Shah, Biren A.

    2015-01-01

    Fat necrosis of the breast is a challenging diagnosis due to the various appearances on mammography, ultrasound, CT, PET-CT, and MRI. Although mammography is more specific, ultrasound is a very important tool in making the diagnosis of fat necrosis. MRI has a wide spectrum of findings for fat necrosis and the appearance is the result of the amount of the inflammatory reaction, the amount of liquefied fat, and the degree of fibrosis. While CT and PET-CT are not first line imaging examinations for the diagnosis of breast cancer or fat necrosis, they are frequently performed in the surveillance and staging of disease. Knowledge of how fat necrosis presents on these additional imaging techniques is important to prevent misinterpretation of the imaging findings. Gross and microscopic appearances of fat necrosis depend on the age of the lesion; the histologic examination of fat necrosis is usually straightforward. Knowledge of the variable appearances of fat necrosis on a vast array of imaging modalities will enhance a radiologist's accuracy in the analysis and interpretation of fat necrosis versus other diagnoses. PMID:25861475

  20. 18F-FDG PET/CT Findings of Scrub Typhus.

    PubMed

    Kim, Jahae; Kwon, Seong Young; Kang, Sae-Ryung; Cho, Sang-Geon; Song, Ho-Chun

    2015-10-01

    Scrub typhus is an acute infectious disease caused by Orienta tsutsugamushi, which is clinically manifested by fever, generalized lymphadenopathy, diffuse myalgia, headache, maculopapular rash, and eschars at the site of chigger feedings. Diagnosis of scrub typhus requires compatible clinical features, history of exposure, and result of selorogic testing. In recent years, F-FDG PET/CT is seen as having increasing potential for use in examination and management of patients with infectious or inflammatory disorders. This is a PET/CT case demonstrating scrub typhus in a patient without evidence of recurrence of thyroid papillary cancer. PMID:26098289

  1. 18F-FDG PET/CT findings in voltage-gated potassium channel limbic encephalitis.

    PubMed

    Kamaleshwaran, Koramadai Karuppuswamy; Iyer, Rajesh Shankar; Antony, Joppy; Radhakrishnan, Edathuruthy Kalarickal; Shinto, Ajit

    2013-05-01

    Limbic encephalitis (LE) can be associated with cancer, viral infection, or be idiopathic. One such rare but treatable form is associated with voltage-gated potassium channel (VGKC) antibodies. Typical abnormalities are seen in FDG PET/CT. We report a 39-year-old female patient who presented with 3 months of progressive faciobrachial dystonic seizures and limbic encephalitis. Her serum and cerebrospinal fluid Lgi1 antibody titers were elevated. FDG PET/CT showed basal ganglial hypermetabolism and associated abnormalities. Serial MRI demonstrated atrophic changes predominantly involving the temporal lobes. She is on immunosuppressive therapy and shows clinical improvement with lowering of antibody titers. PMID:23486322

  2. Study Finds Small Increase in Cancer Risk after Childhood CT Scans

    Cancer.gov

    A study published in the June 6, 2012, issue of The Lancet shows that radiation exposure from computed tomography (CT) scans in childhood results in very small but increased risks of leukemia and brain tumors in the first decade after exposure.

  3. 18F-fluorodeoxyglucose PET/CT findings of a solitary primary hepatic lymphoma: A case report

    PubMed Central

    Pan, Bo; Wang, Cun-Shi; Han, Jian-Kui; Zhan, Lin-Feng; Ni, Ming; Xu, Shi-Cheng

    2012-01-01

    Primary hepatic lymphoma is extremely rare, and only a few cases have been described on positron emission tomography (PET) or PET/computed tomography (PET/CT) imaging in the English literature. We report a case of a 55-year-old woman who presented with low-grade fever and weight loss of three months. On CT scanning, a mass was identified which appeared to be a hypoattenuating lesion, on ultrasonographic imaging, the mass was hypoechoic, therefore, liver abscess or hepatic metastasis from a gastrointestinal primary was initially suspected. Tumor markers such as alpha-fetoprotein, carcinoembryonic antigen and carbohydrate antigen 19-9 were within normal limits. PET/CT demonstrated a large abnormal ring-like hypermetabolic focus in the right liver lobe. The lesion was resected and the histopathological findings were consistent with lymphoma. The patient was discharged two weeks after surgery and did not receive any further treatment. After 25 mo follow-up, she is in good health. 18F-fluorodeoxyglucose PET/CT is useful in confirming the diagnosis of primary hepatic lymphoma by demonstrating no other foci with high uptake in other parts of the body. PMID:23326154

  4. Diffuse Infantile Hepatic Hemangioendothelioma With Early Central Enhancement in an Adult: A Case Report of CT and MRI Findings.

    PubMed

    Dong, Aisheng; Dong, Hui; Zuo, Changjing; He, Tianlin

    2015-12-01

    Infantile hepatic hemangioendothelioma (IHH) is the most common vascular tumor of the liver in infancy. Adult with IHH is extremely rare. We presented a diffuse IHH in an adult patient with computed tomography (CT) and magnetic resonance image (MRI) findings.A 39-year-old man was admitted to our hospital because of a 2-year history of abnormal liver function tests and a 7-day history of jaundice. Physical examination revealed enlarged liver. Unenhanced abdominal CT showed enlargement of the liver with diffuse hypodensity. Enhanced CT on the arterial phase revealed multiple centrally enhanced lesions diffusely involved the enlarged liver. The enhanced areas of the lesions became larger on the portal phase and all the lesions became homogeneous enhanced on the delayed phase. These lesions showed heterogeneously hyperintense on T2-weighted image, hypointense on T1-weighted image, and early centrally enhanced on dynamic gadolinium-enhanced MRI, with complete tumor enhancement after 180?s. The patient underwent orthotopic liver transplantation. IHH type 2 was confirmed by pathology. The patient died of tumor recurrence in the liver 4 months after transplantation.Unlike the previously described imaging appearances of IHH, this case showed diffuse nodules with early central enhancement on CT and MRI. Considering the importance of the ability to differentiate IHH from other hepatic tumors, radiologists should be aware of these imaging appearances to establish knowledge of the entire spectrum of IHH. PMID:26705232

  5. PET CT Thresholds for Radiotherapy Target Definition in Non-Small-Cell Lung Cancer: How Close are we to the Pathologic Findings?

    SciTech Connect

    Wu Kailiang; Ung, Yee C.; Hornby, Jennifer

    2010-07-01

    Purpose: Optimal target delineation threshold values for positron emission tomography (PET) and computed tomography (CT) radiotherapy planning is controversial. In this present study, different PET CT threshold values were used for target delineation and then compared pathologically. Methods and Materials: A total of 31 non-small-cell lung cancer patients underwent PET CT before surgery. The maximal diameter (MD) of the pathologic primary tumor was obtained. The CT-based gross tumor volumes (GTV{sub CT}) were delineated for CT window-level thresholds at 1,600 and -300 Hounsfield units (HU) (GTV{sub CT1}); 1,600 and -400 (GTV{sub CT2}); 1,600 and -450 HU (GTV{sub CT3}); 1,600 and -600 HU (GTV{sub CT4}); 1,200 and -700 HU (GTV{sub CT5}); 900 and -450 HU (GTV{sub CT6}); and 700 and -450 HU (GTV{sub CT7}). The PET-based GTVs (GTV{sub PET}) were autocontoured at 20% (GTV{sub 20}), 30% (GTV{sub 30}), 40% (GTV{sub 40}), 45% (GTV{sub 45}), 50% (GTV{sub 50}), and 55% (GTV{sub 55}) of the maximal intensity level. The MD of each image-based GTV in three-dimensional orientation was determined. The MD of the GTV{sub PET} and GTV{sub CT} were compared with the pathologically determined MD. Results: The median MD of the GTV{sub CT} changed from 2.89 (GTV{sub CT2}) to 4.46 (GTV{sub CT7}) as the CT thresholds were varied. The correlation coefficient of the GTV{sub CT} compared with the pathologically determined MD ranged from 0.76 to 0.87. The correlation coefficient of the GTV{sub CT1} was the best (r = 0.87). The median MD of GTV{sub PET} changed from 5.72cm to 2.67cm as the PET thresholds increased. The correlation coefficient of the GTV{sub PET} compared with the pathologic finding ranged from 0.51 to 0.77. The correlation coefficient of GTV{sub 50} was the best (r = 0.77). Conclusion: Compared with the MD of GTV{sub PET}, the MD of GTV{sub CT} had better correlation with the pathologic MD. The GTV{sub CT1} and GTV{sub 50} had the best correlation with the pathologic results.

  6. Follow-up CT findings of recurrent familial gigantiform cementoma of a female child.

    PubMed

    Shah, Saiquat; Huh, Kyung-Hoe; Yi, Won-Jin; Heo, Min-Suk; Lee, Sam-Sun; Choi, Soon-Chul

    2012-03-01

    Familial gigantiform cementoma (FGC) is a rare autosomal dominant, benign fibro-cemento-osseous lesion of the jaws that can cause severe facial deformity. True FGC with familial history is extremely rare and there has been no literature regarding the radiological follow-up of FGC. We report a case of recurrent FGC in an Asian female child who has been under our observation for 6 years since she was 15 months old. After repeated recurrences and subsequent surgeries, the growth of the tumor had seemed to plateau on recent follow-up CT images. The transition from an enhancing soft tissue lesion to a homogeneous bony lesion on CT may indicate decreased growth potential of FGC. PMID:21830054

  7. FDG PET/CT Findings in Primary Diffuse Large B-cell Lymphoma, Leg Type.

    PubMed

    Ni, Chiayi; Lewis, Michael; Berenji, Gholam

    2016-01-01

    A 64-year-old man presented with complaints of worsening left foot pain and swelling. MRI showed a soft tissue mass overlying the dorsolateral aspect of the left foot. Following a F-fluorodeoxyglucose positron emission tomography/computed tomography (F-FDG PET/CT), the left foot mass was biopsied and pathology indicated a diagnosis of primary diffuse large B-cell lymphoma, leg type (PDLBCL, LT). Review of the PET/CT images demonstrated hypermetabolic activity associated with the left foot mass, multiple subcutaneous nodules/nodes, sclerotic osseous lesions in the lower extremities, and left external iliac/left inguinal lymphadenopathy. At the moment, the patient is undergoing chemotherapy. PMID:26447379

  8. Lung ischaemiareperfusion injury in a canine model: dual-energy CT findings with pathophysiological correlation

    PubMed Central

    Xu, K; Zhang, L J; Morelli, J; Krazinski, A W; Silverman, J R; Schoepf, U J; Lu, G M

    2014-01-01

    Objective: To evaluate dual-energy CT (DECT) findings of pulmonary ischaemicreperfusion injury (PIRI) and its pathophysiological correlation in the canine model. Methods: A PIRI model was established in 11 canines, utilizing closed pectoral balloon occlusion. Two control canines were also included. For the PIRI model, the left pulmonary artery was occluded with a balloon, which was deflated and removed after 2?h. DECT was performed before, during occlusion and at 2, 3 and 4?h thereafter and was utilized to construct pulmonary perfusion maps. Immediately after the CT scan at the fourth hour post reperfusion, the canines were sacrificed, and lung specimens were harvested for pathological analysis. CT findings, pulmonary artery pressure and blood gas results were then analysed. Results: Data at every time point were available for 10 animals (experimental group, n?=?8; control group, n?=?2). Quantitative measurements from DECT pulmonary perfusion maps found iodine attenuation values of the left lung to be the lowest at 2?h post embolization and the highest at 1?h post reperfusion. In the contralateral lung, perfusion values also peaked at 1?h post reperfusion. Continuous hypoxia and acidbased disorders were observed during PIRI, and comprehensive analysis showed physiological changes to be worst at 3?h post reperfusion. Conclusion: DECT pulmonary perfusion mapping demonstrated pulmonary perfusion of the bilateral lungs to be the greatest at 1?h post reperfusion. These CT findings corresponded with pathophysiological changes. Advances in knowledge: DECT pulmonary perfusion mapping can be used to evaluate lung ischaemiareperfusion injury. PMID:24611753

  9. Focused radiation hepatitis after Bragg-peak proton therapy for hepatocellular carcinoma: CT findings

    SciTech Connect

    Okumura, Toshiyuki; Itai, Yuji; Tsuji, Hiroshi

    1994-09-01

    Radiation hepatitis is clearly demonstrated by noncontrast and contrast enhanced CT following radiotherapy for liver diseases. Radiation hepatitis is dependent on dose distribution and is usually demonstrated as nonsegmental bandlike lesion after photon therapy. We report a case of focused, oval-shaped radiation hepatitis that was induced by photon therapy. The attenuation difference was localized in a high-dose area caused by Bragg-peak proton therapy. 17 refs., 2 figs.

  10. Calcification as a sign of sarcomatous degeneration of malignant pleural mesotheliomas: A new CT finding

    SciTech Connect

    Raizon, A.; Schwartz, A.; Hix, W.; Rockoff, S.D.

    1996-01-01

    We present two cases demonstrating, on CT examination, heavily calcified mass lesions associated with malignant pleural mesothelioma in workers occupationally exposed to asbestos. These masses proved to be osteogenic sarcomatous degeneration within mesotheliomas. The observation of dense calcification within a pleural mass should raise a suspicion of osteosarcomatous degeneration if it is seen in conjunction with other classic signs of malignant pleural mesothelioma. 8 refs., 5 figs.

  11. FDG-PET/CT Brain Findings in a Patient With Macrophagic Myofasciitis.

    PubMed

    Van Der Gucht, Axel; Aoun-Sebaiti, Mehdi; Kauv, Paul; Guedj, Eric; Aouizerate, Jessie; Verger, Antoine; Gherardi, Romain K; Bachoud-Levi, Anne-Catherine; Authier, François-Jérôme; Itti, Emmanuel

    2016-03-01

    Brain Positron Emission Tomography/Computed Tomography with (18)F-fluorodeoxyglucose (FDG PET/CT) was performed in a 44-year-old woman with marked cognitive impairment, diffuse myalgias, sensory, memory and visual disorders, and chronic fatigue, presenting with histopathological features of macrophagic myofasciitis (MMF) at deltoid muscle biopsy. Cerebromedullary Magnetic Resonance Imaging (MRI), electromyography, ophthalmic examination, and cerebrospinal fluid analysis were normal. Visual analysis of FDG PET/CT images showed an atypical pattern of hypometabolism, involving symmetrically the occipital cortex, temporal lobes, and limbic system (including in particular amygdalo-hippocampal complexes), and the cerebellum. Posterior cingulate cortex and parietal areas were preserved. This pattern was confirmed by a voxel-based procedure using Statistical Parametric Mapping (SPM12) that compared a patient's images to normal reference samples from six healthy subjects with adjustment to age obtained using the same PET/CT camera. These results provide a glucose metabolism substrate for cognitive complaints in patients with long-lasting aluminium hydroxide-induced MMF. PMID:26941864

  12. CT appearance of splenosis

    SciTech Connect

    Mendelson, D.S.; Cohen, B.A.; Armas, R.R.

    1982-12-01

    Splenosis is an unusual complication of splenic trauma. The computed tomographic (CT) appearance of splenosis is described. One should consider this diagnosis when faced with a history of splenic trauma and multiple round or oval masses at CT.

  13. Unusual finding of endocervical-like mucinous epithelium in continuity with urothelium in endocervicosis of the urinary bladder

    PubMed Central

    2011-01-01

    Endocervicosis in the urinary bladder is a rare benign condition. We present a case in a 37-year-old woman with classical clinical and pathological features of endocervicosis. The unusual observation of endocervical-like mucinous epithelium in continuity with the urothelium in addition to fully developed endocervicosis prompted immunohistochemical profiling of the case using antibodies to cytokeratins (AE1/AE3, CK19, CK7, CK5/6, CK20), HBME-1, estrogen receptor (ER) and progesterone receptor (PR) to assess the relationship of the surface mucinous and endocervicosis glandular epithelia. The surface mucinous epithelium, urothelium and endocervicosis glands were immunopositive for AE1/AE3, CK7 and CK19 while CK20 was only expressed by few urothelial umbrella cells. The surface mucinous epithelium was CK5/6 and HBME-1 immunonegative but showed presence of ER and PR. This was in contrast to the urothelium's expression of CK5/6 but not ER and PR. In comparison, endocervicosis glands expressed HBME-1, unlike the surface mucinous epithelium. The endocervicosis epithelium also demonstrated the expected presence of ER and PR and CK5/6 immunonegativity. The slightly differing immunohistochemical phenotypes of the surface mucinous and morphologically similar endocervicosis glandular epithelium is interesting and requires further clarification to its actual nature. The patient has remained well and without evidence of disease 18-months following transurethral resection of the lesion. PMID:21699710

  14. Acute Klebsiella pneumoniae pneumonia alone and with concurrent infection: comparison of clinical and thin-section CT findings

    PubMed Central

    Okada, F; Ando, Y; Honda, K; Nakayama, T; Ono, A; Tanoue, S; Maeda, T; Mori, H

    2010-01-01

    The purpose of this study was to identify the clinical and thin-section CT findings in patients with acute Klebsiella pneumoniae pneumonia (KPP) alone and with concurrent infection. We retrospectively identified 160 patients with acute KPP who underwent chest thin-section CT examinations between August 1998 and August 2008 at our institution. The study group comprised 80 patients (54 male, 26 female; age range 1897 years, mean age 61.5) with acute KPP alone, 55 (43 male, 12 female; age range 4692 years, mean age 76.0) with KPP combined with methicillin-resistant Staphylococcus aureus (MRSA) and 25 (23 male, 2 female; age range 5691 years, mean age 72.7) with KPP combined with Pseudomonas aeruginosa (PA). Underlying diseases in patients with each type of pneumonia were assessed. Parenchymal abnormalities were evaluated along with enlarged lymph nodes and pleural effusion. In patients with concurrent pneumonia, underlying conditions such as cardiac diseases, diabetes mellitus and malignancy were significantly more frequent than in patients with KPP alone. The mortality rate in patients with KPP combined with MRSA or PA was significantly higher than in those with KPP alone. In concurrent KPP, CT findings of centrilobular nodules, bronchial wall thickening, cavity, bronchiectasis, nodules and pleural effusion were significantly more frequent with concurrent pneumonia than in those with KPP alone. PMID:20647513

  15. Image findings of cranial nerve pathology on [18F]-2- deoxy-D-glucose (FDG) positron emission tomography with computerized tomography (PET/CT): a pictorial essay.

    PubMed

    Raslan, Osama A; Muzaffar, Razi; Shetty, Vilaas; Osman, Medhat M

    2015-01-01

    This article aims to increase awareness about the utility of (18)F -FDG-PET/CT in the evaluation of cranial nerve (CN) pathology. We discuss the clinical implication of detecting perineural tumor spread, emphasize the primary and secondary (18)F -FDG-PET/CT findings of CN pathology, and illustrate the individual (18)F -FDG-PET/CT CN anatomy and pathology of 11 of the 12 CNs. PMID:26634826

  16. Characteristic CT Findings After Percutaneous Cryoablation Treatment of Malignant Lung Nodules

    PubMed Central

    Chaudhry, Ammar; Grechushkin, Vadim; Hoshmand, Mahsa; Kim, Choo Won; Pena, Andres; Huston, Brett; Chaya, Yair; Bilfinger, Thomas; Moore, William

    2015-01-01

    Abstract Assess computed tomography (CT) imaging characteristics after percutaneous cryotherapy for lung cancer. A retrospective IRB-approved analysis of 40 patients who underwent nonsurgical treatment for primary stage 1 lung cancer performed from January 2007 to March 2011 was included in this study. All procedures were performed using general anesthesia and CT guidance. Follow-up imaging with CT of the chest was obtained at 1 month, 3 months, 6 months, and 12 months postprocedure to evaluate the ablated lung nodule. Nodule surface area, density (in Hounsfield units), and presence or absence of cavitations were recorded. In addition, the degree of nodule enhancement was also recorded. Patients who were unable to obtain the aforementioned follow-up were excluded from the study. Thirty-six patients underwent percutaneous cryoablation with men to women ratio of 75% with mean age for men 74.6 and mean age for women 74.3 years of age. The average nodule surface area preablation and postcryoablation at 1-, 3-, 6-, and 12-month follow-ups were 2.99, 7.86, 3.89, 3.18 and 3.07?cm2, respectively. The average precontrast nodule density before cryoablation was 8.9 and average precontrast nodule density postprocedure at 1, 3, 6, and 12 months follow-ups were 8.5, ?5.9, ?9.4, and ?3.8 HU, respectively. There is increased attenuation of lung nodules over time with an average postcontrast enhancement of 11.4, 18.5, 16.1, and 25.7 HU at the aforementioned time intervals. Cavitations occurred in the cryoablation zone in 53% (19/36) of patients. 80.6% (29/36) of the cavitations in the cryoablation zone resolved within 12 months. Four patients (11%) had recurrence of tumor at the site of cryoablation and none of the patients had satellite or distant metastasis. Our study shows that patients who underwent cryotherapy for lung nodules treatment had characteristic changes on follow-up CT including. The surface area of the nodule increases at the 1-month follow-up with subsequent gradual decrease in the surface area. Decreased nodule density (Hounsfield units) at each interval follow-up is associated with complete ablation of the lung cancer whereas increasing nodule density was suggestive of recurrence. Cavity formation within the region of the ablated nodule, most of which typically resolved within the first 3 to 6 months. Nodule enhancement is difficult to assess because of the limited data sets that are available. PMID:26496275

  17. Scintigraphic and CT findings of Tietze's syndrome: Report of a case and review of the literature

    SciTech Connect

    Honda, N.; Machida, K.; Mamiya, T.; Takahashi, T.; Takishima, T.; Hasegawa, N.; Kamano, T.; Hashimoto, M.; Ohno, K.; Itoyama, S.; )

    1989-08-01

    A case of Tietze's syndrome is reported. A 43-year-old woman, who had experienced right anterior chest pain and tender swelling of the right first costosternal junction for seven months, showed increased accumulation of the right first, the right fourth, and the left first costochondral junction on bone imaging. Ga-67 imaging showed increased accumulation at the right first costosternal junction. CT showed sclerosis of the sternal manubrium, partial calcification of costal cartilage, and soft tissue swelling. Biopsy of the right first costal cartilage showed chronic inflammation with fibrosis and ossification. Increased uptake of bone gallium imaging is consistent with Tietze's syndrome.15 references.

  18. Craniofacial osteosarcomas: plain film, CT, and MR findings in 46 cases

    SciTech Connect

    Lee, Y.Y.; Van Tassel, P.; Nauert, C.; Raymond, A.K.; Edeiken, J.

    1988-06-01

    Forty-six osteosarcomas of the cranial and facial bones were reviewed radiographically by using the conventional parameters for long bone tumors. There were 32 de novo osteosarcomas (11 maxillary, 13 mandibular, and eight cranial) and 14 postradiation osteosarcomas. All the maxillary tumors originated from the alveolar ridge, and the majority of mandibular lesions began in the body of the mandible. The postradiation osteosarcomas occurred in portions of bones at the borders of the radiation field; the latent period ranged from 4 years, 2 months to 50 years (mean, 14 years). The majority of de novo or postradiation craniofacial osteosarcomas were osteolytic with a long transition zone and no periosteal reaction; the exception was in the mandible, where nearly half the cases were osteoblastic and periosteal reaction was occasionally present. Tumor matrix mineralization occurred in more than 75% of the cases, and osteoid matrix calcification was most frequent, even though most tumors were chondroblastic. Soft-tissue extension of tumor was present in all cases and contained calcifications in more than half. Conventional radiographs are of limited value in evaluating head and neck osteosarcomas because of the superimposed bony structures. CT provides excellent detection of tumor calcification, cortical involvement, and, in most instances, soft-tissue and intramedullary extension. MR is even more effective in demonstrating the intramedullary and extraosseous tumor components on both T1- and T2-weighted images. However, CT and plain films are superior to MR in detecting the matrix calcifications and bone destruction or reaction.

  19. CT-Guided Transthoracic Core Biopsy for Pulmonary Tuberculosis: Diagnostic Value of the Histopathological Findings in the Specimen

    SciTech Connect

    Fukuda, Hozumi Ibukuro, Kenji; Tsukiyama, Toshitaka; Ishii, Rei

    2004-09-15

    We evaluated the value of CT-guided transthoracic core biopsy for the diagnosis of mycobacterial pulmonary nodules. The 30 subjects in this study had pulmonary nodules that had been either diagnosed histopathologically as tuberculosis or were suspected as tuberculosis based on a specimen obtained by CT-guided transthoracic core biopsy. The histopathological findings, the existence of acid-fast bacilli in the biopsy specimens, and the clinical course of the patients after the biopsy were reviewed retrospectively. Two of the three histological findings for tuberculosis that included epithelioid cells, multinucleated giant cells and caseous necrosis were observed in 21 of the nodules which were therefore diagnosed as histological tuberculosis. Six of these 21 nodules were positive for acid-fast bacilli, confirming the diagnosis of tuberculosis. Thirteen of the 21 nodules did not contain acid-fast bacilli but decreased in size in response to antituberculous treatment and were therefore diagnosed as clinical tuberculosis. Seven nodules with only caseous necrosis were diagnosed as suspected tuberculosis, with a final diagnosis of tuberculosis being made in 4 of the nodules and a diagnosis of old tuberculosis in 2 nodules. Two nodules with only multinucleated giant cells were diagnosed as suspected tuberculosis with 1 of these nodules being diagnosed finally as tuberculosis and the other nodule as a nonspecific granuloma. When any two of the three following histopathological findings - epithelioid cells, multinucleated giant cells or caseous necrosis - are observed in a specimen obtained by CT-guided transthoracic core biopsy, the diagnosis of tuberculosis can be established without the detection of acid-fast bacilli or Mycobacterium tuberculosis.

  20. The Association of Anisakiasis in the Ascending Colon with Sigmoid Colon Cancer: CT Colonography Findings

    PubMed Central

    Yoo, Hye Jin; Lee, Jeong Min; Kim, Min A; Han, Joon Koo; Choi, Byung Ihn

    2008-01-01

    The association of anisakiasis of the colon with colon cancer is rare and difficult to diagnose. Only one case of this type has been reported to date. In this study, we report a case of synchronous colon cancer and colonic anisakiasis. A 50-year-old woman was admitted for abdominal pain, and a volume-rendered surface-shaded image of CT colonography (CTC) revealed a concentric narrowing in the sigmoid colon and a segmental fold thickening in the ascending colon. A total colectomy was performed and the diagnosis of synchronous sigmoid colon cancer and anisakiasis of the ascending colon was confirmed. This case is the first reported visualization of synchronous colon cancer and colonic anisakiasis on a CTC. PMID:18607128

  1. Case Report: An Unusual Finding of a Solitary Bone Cyst in a Patient with a Fractured Mandible.

    PubMed

    Chell, Melanie; Idle, Matthew; Green, Jason

    2015-12-01

    Solitary bone cysts are uncommon. They have a reported incidence of 0.6% and are commonest in the mandible. The case of a 16-year-old patient who attended Accident and Emergency with a fractured mandible and the incidental finding of a solitary bone cyst is presented. Solitary bone cysts are usually asymptomatic and generally heal fully following surgical exploration. CPD/Clinical Relevance: This case report aims to increase awareness of the general dental practitioner of solitary bone cysts as a possible finding in patients with pathological jaw fractures and radiolucencies of the jaws. It outlines the surgical management that is carried out on patients with solitary bone cysts. PMID:26856006

  2. Unusual Congenital Aortic Anomaly with Rare Common Celiamesenteric Trunk Variation: MR Angiography and Digital Substraction Angiography Findings

    SciTech Connect

    Tosun, Ozgur Sanlidilek, Umman; Cetin, Huseyin; Ozdemir, Ozcan; Kurt, Aydin; Sakarya, Mehmet Emin; Tas, Ismet

    2007-09-15

    Magnetic resonance angiography and digital substraction angiography (DSA) findings in a case with a rare congenital thoracoabdominal aortic hypoplasia and common celiamesenteric trunk variation with occlusion of infrarenal abdominal aorta are described here. To our knowledge, this aortic anomaly has not been previously described in the English literature. DSA is the optimum imaging modality for determination of aortic hypoplasia, associated vascular malformations, collateral vessels, and direction of flow within vessels.

  3. Pseudogout in the temporomandibular joint with imaging, arthroscopic, operative, and pathologic findings. Report of an unusual case.

    PubMed

    Laviv, Amir; Sadow, Peter M; Keith, David A

    2015-06-01

    The authors present a case of a 60-year-old woman with a destructive painful condition in the right temporomandibular joint (TMJ) that proved to be calcium pyrophosphate crystal deposits at subsequent biopsy examination. The patient presented with the chief complaints of pain and limitation that had not resolved with splint therapy, medications, and habit control. Magnetic resonance imaging studies showed internal derangement without reduction. Right TMJ arthroscopy with manipulation of the jaw under anesthesia showed unique findings of fronds of synovial tissue in the posterior joint space and areas of white matter. Because there was no long-term improvement in her clinical symptoms, she subsequently underwent arthroplasty of the right joint, with the white material clearly seen at surgery, and the biopsy examination confirmed the clinical and arthroscopic impression of pseudogout. The presentation, diagnosis, pathology, and treatment of pseudogout of the TMJ are discussed. PMID:25843817

  4. Multi-detector CT assessment in pulmonary hypertension: techniques, systematic approach to interpretation and key findings.

    PubMed

    Lewis, Gareth; Hoey, Edward T D; Reynolds, John H; Ganeshan, Arul; Ment, Jerome

    2015-06-01

    Pulmonary arterial hypertension (PAH) may be suspected based on the clinical history, physical examination and electrocardiogram findings but imaging is usually central to confirming the diagnosis, establishing a cause and guiding therapy. The diagnostic pathway of PAH involves a variety of complimentary investigations of which computed tomography pulmonary angiography (CTPA) has established a central role both in helping identify an underlying cause for PAH and assessing resulting functional compromise. In particular CTPA is considered as the gold standard technique for the diagnosis of thromboembolic disease. This article reviews the CTPA evaluation in PAH, describing CTPA techniques, a systematic approach to interpretation and spectrum of key imaging findings. PMID:26029645

  5. Multi-detector CT assessment in pulmonary hypertension: techniques, systematic approach to interpretation and key findings

    PubMed Central

    Lewis, Gareth; Reynolds, John H.; Ganeshan, Arul; Ment, Jerome

    2015-01-01

    Pulmonary arterial hypertension (PAH) may be suspected based on the clinical history, physical examination and electrocardiogram findings but imaging is usually central to confirming the diagnosis, establishing a cause and guiding therapy. The diagnostic pathway of PAH involves a variety of complimentary investigations of which computed tomography pulmonary angiography (CTPA) has established a central role both in helping identify an underlying cause for PAH and assessing resulting functional compromise. In particular CTPA is considered as the gold standard technique for the diagnosis of thromboembolic disease. This article reviews the CTPA evaluation in PAH, describing CTPA techniques, a systematic approach to interpretation and spectrum of key imaging findings. PMID:26029645

  6. Assessing the prevalence and clinical relevance of positive abdominal and pelvic CT findings in senior patients presenting to the emergency department.

    PubMed

    Alabousi, Abdullah; Patlas, Michael N; Meshki, Malek; Monteiro, Sandra; Katz, Douglas S

    2016-04-01

    The purpose of our study was to retrospectively evaluate the prevalence and clinical relevance of positive abdominal and pelvic CT findings for patients 65 years of age and older, when compared with all other scanned adult Emergency Department (ED) patients, at a single tertiary care hospital. Our hypothesis was that there is an increased prevalence and clinical relevance of positive abdominal/pelvic CT findings in senior patients. A research ethics board-approved retrospective review of all adult patients who underwent an emergency CT of the abdomen and pelvis for acute nontraumatic abdominal and/or pelvic signs and symptoms was performed. Two thousand one hundred two patients between October 1, 2011, and September 30, 2013, were reviewed. Six hundred thirty-one patients were included in the <65 group (298 men and 333 women; mean age 46, age range 18-64), and 462 were included in the >65 group (209 men and 253 women; mean age 77.6, age range 65-99). Overall, there were more positive CT findings for patients <65 (389 positive cases, 61.6 %) compared with the >65 group (257 positive cases, 55.6 %), which was a statistically significant difference (p < 0.03). Moreover, with the exception of complicated appendicitis cases, which were more common in the >65 group, there were no statistically significant differences in the clinical/surgical relevance of the positive CT findings between the two groups. The findings of our retrospective study therefore refute our hypothesis that there is an increased prevalence of positive abdominal CT findings in patients >65. This may be related to ED physicians at our institution being more hesitant to order CT examinations for the younger population, presumably due to radiation concerns. However, older patients in our series were more likely to present with complicated appendicitis, and a lower threshold for ordering CT examinations of the abdomen and pelvis in this patient population should therefore be considered. PMID:26607149

  7. Naeglaeria infection of the central nervous system, CT scan findings: a case series.

    PubMed

    Naqi, Rohana; Azeemuddin, Muhammad

    2013-03-01

    The imaging findings in four cases of a rare infection of the central nervous system caused by amoebae, Naeglaeria fowleri are presented. Naeglaeria fowleri are pathogenic free-living amoebae. They cause primary amoebic meningoencephalitis (PAM), a rapidly fatal disease of the central nervous system. The computed tomography brain findings in 3 (75%) of our cases of pan amoebic meningoencephalitis showed non-specific brain oedema; 2 (66%) of these cases also had moderate hydrocephalus and among that 1 (50%) case showed an old lacunar infarction in peri-ventricular region. In the remaining 1 (25%) case the scan was normal with no evidence of oedema or abnormal lesion. Out of three cases with diffuse brain oedema, postcontrast images showed abnormal meningeal enhancement throughout the brain parenchyma in 1 (33%) case. However, no definite focal enhancing lesion was noted. In the rest of the cases, no abnormal parenchymal or meningeal enhancement was seen on post-contrast images. PMID:23914650

  8. CT and MRI Findings of Autoimmune Polymorph Bifocal Pancreatitis Mimicking Pancreatic Adenocarcinoma

    PubMed Central

    Blker, Hendrik; Bahra, Marcus; Denecke, Timm; Grieser, Christian

    2015-01-01

    Autoimmune pancreatitis is a rare type of chronic pancreatitis. It is supposed to be a pancreatic manifestation of an immune-complex modulated systemic disorder. In contrast, pancreatic adenocarcinoma is the most frequent malignant neoplasm of the pancreas. Within the rare type of focal autoimmune pancreatitis, only few presentations with multifocal pancreatic lesions have been described. Herein we report a case of a 58-year-old patient with autoimmune pancreatitis presenting with bifocal manifestations of the pancreatic head and tail, mimicking pancreatic adenocarcinoma clinically, on computed tomography and magnetic resonance imaging. Typical imaging findings of autoimmune pancreatitis are compared with typical findings in pancreatic carcinoma. The diagnostic dilemma of differentiating between both entities is discussed. A review of the present literature regarding multifocal presence of autoimmune pancreatitis is performed. PMID:26425636

  9. MRI and CT findings of isolated intracranial Rosai-Dorfman disease in a child.

    PubMed

    Alimli, Ayse G; Oztunali, Cigdem; Boyunaga, Oznur L; Pamukcuoglu, Selma; Okur, Arzu; Borcek, Alp O

    2016-04-01

    Isolated intracranial Rosai-Dorfman disease (RDD) is extremely rare in pediatric patients. We present the case of a 22-month-old boy whom had isolated intracranial RDD involvement. To our knowledge, a parieto-occipital regional involvement without a dural tail sign has not been previously documented. Also, the mass contained hyperintense central T1 foci, and hypointense T2 and gradient echo foci; which are helpful in the differential diagnosis from meningioma. The magnetic resonance and computed tomography imaging findings are discussed and the follow-up course is presented in this paper. PMID:26915894

  10. Postmortem CT versus forensic autopsy: frequent discrepancies of tracheobronchial content findings.

    PubMed

    Zech, Wolf-Dieter; Jackowski, Christian; Schwendener, Nicole; Brencicova, Eva; Schuster, Frederick; Lombardo, Paolo

    2016-01-01

    In their daily forensic casework, the authors experienced discrepancies of tracheobronchial content findings between postmortem computed tomography (PMCT) and autopsy to an extent previously unnoticed in the literature. The goal of this study was to evaluate such discrepancies in routine forensic cases. A total of 327 cases that underwent PMCT prior to routine forensic autopsy were retrospectively evaluated for tracheal and bronchial contents according to PMCT and autopsy findings. Hounsfield unit (HU) values of tracheobronchial contents, causes of death, and presence of pulmonary edema were assessed in mismatching and matching cases. Comparing contents in PMCT and autopsy in each of the separately evaluated compartments of the respiratory tract low positive predictive values were assessed (trachea, 38.2%; main bronchi, 40%; peripheral bronchi, 69.1%) indicating high discrepancy rates. The majority of tracheobronchial contents were viscous stomach contents in matching cases and low radiodensity materials (i.e., HU?

  11. Juvenile xanthogranuloma: unusual intraoral finding.

    PubMed

    Collins, L; Banks, R; Robinson, M

    2015-01-01

    Juvenile xanthogranuloma is a rare non-Langerhans cell histiocytosis that usually presents as a self-limiting dermatological condition in young children. Rarely, extracutaneous sites may also be involved. We report a case in a 3-year-old girl that presented intraorally as a solitary, well-defined, soft, purple palatal swelling. Patients with these rare intraoral lesions may present to dentists and subsequently to oral and maxillofacial surgeons. Diagnosis requires histopathological analysis and immunohistochemical staining. Further investigation from other specialties is required to rule out involvement of other organ systems. PMID:25300889

  12. Pulmonary histoplasmosis: unusual histopathologic findings.

    PubMed

    Garrido, Liseloth; Mata-Essayag, Sofa; Hartung de Capriles, Claudia; Eugenia Landaeta, Mara; Pacheco, Italo; Fuentes, Zhenia

    2006-01-01

    Four patients with clinical diagnosis of interstitial lung disease (ILD) are presented. In these patients, lung biopsies revealed bronchocentric granulomatosis (BG), pulmonary alveolar proteinosis (PAP), diffuse alveolar damage (DAD), and in one biopsy, the clinical manifestations suggested tuberculous primo-infection with systemic dissemination. Three patients died without diagnosis. In all four cases, specific histological stains found Histoplasma capsulatum. Histoplasmosis may mimic other infectious or non-infectious pulmonary diseases, such as interstitial and granulomatous pulmonary disease. Therefore, the absolute need for identification of the organism by culture or special stains cannot be over-emphasized and may lead to a proper mycological diagnosis. This highlights the importance of differential diagnosis with systemic infectious diseases, especially in areas where deep-seated mycosis are endemic. PMID:16488088

  13. CT findings of thoracic manifestations of primary Sjgren syndrome: radiologic-pathologic correlation.

    PubMed

    Egashira, Ryoko; Kondo, Tetsuya; Hirai, Tetsuyoshi; Kamochi, Noriyuki; Yakushiji, Mai; Yamasaki, Fumio; Irie, Hiroyuki

    2013-01-01

    Primary Sjgren syndrome is an immune-mediated exocrinopathy characterized by lymphoplasmacytic infiltration of the salivary and lacrimal glands. Various systemic extraglandular disorders are associated with primary Sjgren syndrome, and the thorax is commonly affected. The pulmonary manifestations of primary Sjgren syndrome may be categorized as airway abnormalities, interstitial pneumonias, and lymphoproliferative disorders; in each category, bronchiectasis or centrilobular nodules, nonspecific interstitial pneumonia, and lymphoid interstitial pneumonia are common. These manifestations do not usually occur in isolation; they are concomitantly seen with other types of lesions. Mucosa-associated lymphoid tissue (MALT) lymphoma and amyloidosis are key components of lymphoproliferative disorders, and MALT lymphoma should always be considered because its morphologic characteristics are similar to those of benign lymphoproliferative disorders. Amyloidosis is rare but important because it carries a risk for underlying MALT lymphoma or plasmacytoma, and it may lead to hemoptysis during biopsy. In addition, thin-walled air cysts are characteristic of primary Sjgren syndrome, irrespective of the main pulmonary manifestations. Lymphadenopathy and multilocular thymic cysts may be seen in the mediastinum. During the follow-up period, there is a risk for acute exacerbation of interstitial pneumonia and development of malignant lymphoma. Often, primary Sjgren syndrome is subclinical, but there are various underlying risks. Thus, imaging findings are important. In addition to the various types of interstitial pneumonia and airway abnormalities, air cysts and mediastinal manifestations may help diagnose primary Sjgren syndrome. PMID:24224588

  14. Findings

    MedlinePLUS

    ... Issue All Issues Explore Findings by Topic Cell Biology Cellular Structures, Functions, Processes, Imaging, Stress Response Chemistry ... Glycobiology, Synthesis, Natural Products, Chemical Reactions Computers in Biology Bioinformatics, Modeling, Systems Biology, Data Visualization Diseases Cancer, ...

  15. Garden type I fractures myth or reality? A prospective study comparing CT scans with X-ray findings in Garden type I femoral neck fractures.

    PubMed

    Chen, Wei; Li, Zhiyong; Su, Yanling; Hou, Zhiyong; Zhang, Qi; Zhang, Yingze

    2012-11-01

    The Garden type I femoral neck fracture is defined as an incomplete fracture of the neck of the femur as seen on the antero-posterior (AP) radiograph of the injured hip. The diagnosis of incomplete femoral neck fractures has decreased in recent years with the development of improved radiographic imaging. We hypothesized that incomplete femoral neck fractures seen on radiographs are in fact complete fractures on computed tomography (CT). The study aims to test this hypothesis by comparing CT scan images to X-ray findings in patients diagnosed with Garden type I femoral neck fractures. From January 2008 to October 2010, our management of femoral neck fractures included a CT scan of the injured hip for all Garden type I fractures. CT findings were reported by a musculoskeletal radiologist. A classification of the fracture was performed by an orthopedic surgeon. Eight hundred and twenty five femoral neck fractures were admitted during the study period. Seventeen of these fractures (2.1%) were considered incomplete based on radiographic evaluation. In 17 cases (100%), the CT scan demonstrated a complete fracture extending through the medial cortex. Subsequently, all 17 fractures were fixed with standard cannulated screw technique on a fracture table. Secondary displacement occurred in one patient prior to fixation. All fractures healed well and no avascular necrosis was noted. In summary, our study shows that incomplete femoral neck fractures identified on X-rays are actually complete fractures based on CT scans. If confirmed by a larger study population, our findings can simplify the Garden classification by eliminating an inaccurate subcategory. The clinical implications are that Garden type I fractures should all likely be fixed with cannulated screws and with an effort to prevent displacement during treatment. PMID:22884722

  16. Whole-Organ CT Perfusion of the Pancreas: Impact of Iterative Reconstruction on Image Quality, Perfusion Parameters and Radiation Dose in 256-Slice CT-Preliminary Findings

    PubMed Central

    Xie, Qian; Wu, Juan; Tang, Ying; Dou, Yafang; Hao, Sijie; Xu, Feijia; Feng, Xiaoyuan; Liang, Zonghui

    2013-01-01

    Background This study was performed to assess whether iterative reconstruction can reduce radiation dose while maintaining acceptable image quality, and to investigate whether perfusion parameters vary from conventional filtered back projection (FBP) at the low-tube-voltage (80-kVp) during whole-pancreas perfusion examination using a 256-slice CT. Methods 76 patients with known or suspected pancreatic mass underwent whole-pancreas perfusion by a 256-slice CT. High- and low-tube-voltage CT images were acquired. 120-kVp image data (protocol A) and 80-kVp image data (protocol B) were reconstructed with conventional FBP, and 80-kVp image data were reconstructed with iDose4 (protocol C) iterative reconstruction. The image noise; contrast-to-noise ratio (CNR) relative to muscle for the pancreas, liver, and aorta; and radiation dose of each protocol were assessed quantitatively. Overall image quality was assessed qualitatively. Among 76 patients, 23 were eventually proven to have a normal pancreas. Perfusion parameters of normal pancreas in each protocol including blood volume, blood flow, and permeability-surface area product were measured. Results In the quantitative study, protocol C reduced image noise by 36.8% compared to protocol B (P<0.001). Protocol C yielded significantly higher CNR relative to muscle for the aorta, pancreas and liver compared to protocol B (P<0.001), and offered no significant difference compared to protocol A. In the qualitative study, protocols C and A gained similar scores and protocol B gained the lowest score for overall image quality (P<0.001). Mean effective doses were 23.37 mSv for protocol A and 10.81 mSv for protocols B and C. There were no significant differences in the normal pancreas perfusion values among three different protocols. Conclusion Low-tube-voltage and iDose4 iterative reconstruction can dramatically decrease the radiation dose with acceptable image quality during whole-pancreas CT perfusion and have no significant impact on the perfusion parameters of normal pancreas compared to the conventional FBP reconstruction using a 256-slice CT scanner. PMID:24303017

  17. Unusual manifestations of brucellosis

    PubMed Central

    Kaya, Onur; Av?ar, Kemal; Zeynep Akam, Fsun

    2011-01-01

    Brucellosis is an important public health problem in the Mediterranean countries, including our country. Furthermore, because of different symptoms and clinical findings, the disease could be confused with several other diseases. In this article, three unusual findings of brucellosis are presented: pancytopenia, endocarditis and meningitis. PMID:22291753

  18. CT Findings of Risk Factors for Persistent Type II Endoleak from Inferior Mesenteric Artery to Determine Indicators of Preoperative IMA Embolization

    PubMed Central

    Matsuda, Hitoshi; Sanda, Yoshihiro; Morita, Yoshiaki; Minatoya, Kenji; Kobayashi, Junjiro; Naito, Hiroaki

    2014-01-01

    Purpose: To identify the computed tomography (CT) findings of persistent type II endoleak from the inferior mesenteric artery (IMA) which indicate the need for preoperative IMA embolization. Materials and Methods: Included were 120 patients (96 males, 4993 years old, mean: 77.7) who underwent endovascular aortic aneurysm repair (EVAR) between June 2007 and October 2010. The relationship between persistent type II endoleak and CT findings of IMA orifice was examined. Results: CT showed no type II endoleak from IMA in 106 patients (89%; Group N), and transient type II endoleak from IMA in 10 patients (8.3%; Group T). CT showed persistent type II endoleak from IMA in 4 patients (3.3%; Group P) and three of them underwent reintervention. Univariate Cox-Mantel test analysis indicated that stenosis (p = 0.0003) and thrombus (p = 0.043) in IMA orifice were significant factors for persistent type II endoleak. The ratios of patients with proximal IMA more than 2.5 mm diameter in Groups N, Y, and P were 26/106 (24%), 5/10 (50%) and 4/4 (100%), respectively. Conclusion: Indicators for embolization of IMA prior to EVAR for the prevention of type II endoleak appear to be: (1) more than 2.5 mm in diameter and (2) no stenosis due to calcification or mural thrombus in IMA orifice. PMID:25298829

  19. The Evaluation of FDG PET/CT Scan Findings in Patients with Organizing Pneumonia Mimicking Lung Cancer

    PubMed Central

    Erdoğan, Yurdanur; Akıncı Özyürek, Berna; Özmen, Özlem; Yılmaz Demirci, Nilgün; Duyar, Sezgi Şahin; Dadalı, Yeliz; Demirağ, Funda; Karakaya, Jale

    2015-01-01

    Objective: Organizing pneumonia (OP) is a rare lung condition that is characterized by the presence of polypoid tissues due to fibroblastic plugs within respiratory bronchioles, alveolar ducts and sacs. The three main radiologic patterns of OP include typical, solitary-focal and infiltrative forms. The maximum standardized uptake value (SUVmax) on positron emission tomography-computed tomography (PET/CT) may be high in benign conditions such as OP as well as malignant diseases. The aim of our study was to investigate PET-CT characteristics of OP in patients mimicking lung cancer. Methods: The clinical and radiologic characteristics of 50 patients who were referred to our hospital for PET/CT evaluation due to suspicion of lung malignancy, and who were pathologically diagnosed as OP between 2009 and 2013 were retrospectively reviewed. Results: The mean age of the patients was 58.2 years. Ninety-six percent of patients (48) were male. Radiologic evaluation revealed 27 (54%) focal involvement, 10 (20%) consolidation with air-bronchogram (typical), 1 (2%) infiltrative and 12 (24%) other types of involvement (multiple nodules and cavitary lesions). The mean SUVmax value of the lesions on PET/CT was calculated as 6.5. Mediastinal lymph node involvement (at least one station) was detected in 76% of our study group with a mean SUVmax value of 3.27. Conclusion: OP may cause false positive results on PET/CT. However, PET/CT results may be used as a guide for invasive procedures that should be performed when there is suspicion of malignancy. PMID:26316470

  20. Imaging diagnosis-ultrasonographic and CT findings in a gray seal (Halichoerus grypus) with hepatic cirrhosis, pyelonephritis, and nephrolithiasis.

    PubMed

    de Swarte, Marie; Bryan, Jill; Zarelli, Micaela; Huuskonen, Vihelmiina; Schneeweiss, Wilfried; McAllister, Hester

    2013-01-01

    An immature gray seal was presented with lethargy, weight loss, vomiting and hematuria. Hepatic disease and urinary tract infection were suspected. Abdominal ultrasound showed hyperechoic structures with marked acoustic shadowing spread throughout both kidneys, but incomplete visualization of the liver. Abdominal CT showed mineral densities scattered throughout both kidneys and poor delineation of the liver. Due to the poor quality of life, the seal was euthanized. Postmortem examination showed ammonium urate nephroliths, pyelonephritis, and hepatic cirrhosis. This case report emphasizes the difficulty of characterizing liver disease with conventional 2D-ultrasound and CT in a deep-chested animal with minimal intra-abdominal fat. PMID:23578275

  1. [False positive 18F-FDG PET/CT findings mimicking malignant disease in patients with pneumoconiosis (due to three case reports)].

    PubMed

    Yurdakul, Ahmet Selim; Varol, Ayhan; Yeni Akten, Serpil; ztrk, Can

    2012-01-01

    Besides the risk of developing pneumoconiosis and chronic obstructive pulmonary disease, potential lung cancer risk may also increase due to exposure to silica and other carcinogens. Patients with hemoptysis symptom referred to our clinic depending on different forms of mass images in their thorax computerize tomography (CT) scan with the suspicion of coal-worker pneumoconiosis and lung cancer were hospitalized for investigation and treatment. The results of routine tests, sputum acid-fast bacilli and sputum cytology were evaluated as normal. PET/CT was ordered from patients for identifying malignancy. In PET/CTs of the patients, a pathological level of 18F fluorodeoxyglucose uptake was identified in different forms of mass images observed previously in thorax CTs. All the pathological specimens obtained by fiberoptic bronchoscopic biopsy and/or by mediastinoscopy were reported as benign. We aimed to present three pneumoconiosis patients with false positive PET/CT findings in the light of relevant literature. As a result, we thought that pneumoconiosis must be in mind also when considering about false positive results of PET/CT. PMID:23030755

  2. Intravenous leiomyomatosis with intracardiac extension: an unusual presentation of uterine leiomyoma and evaluation with 256-slice dual-source multidetector CT and cardiac MRI.

    PubMed

    Jain, Neeraj; Rissam, Harmeet Kaur; Mittal, Umesh Kumar; Sharma, Ashok

    2015-01-01

    We report a case of a 40-year-old woman who presented with breathlessness, palpitations and vague pelvic pain for 6?months. The dyspnoea was non-exertional and episodic. She was a non-diabetic, non-hypertensive and had no history of prior surgeries. ECG and chest radiograph were normal. Cardiac MRI and 256-slice dual-source multidetector CT evaluation revealed the presence of a uterine and left adnexal mass with intravenous extension into the inferior vena cava via the gonadal veins, and further cephalad extension into the right atrium and ventricle. The patient was referred to the cardiothoracic surgery department and underwent two-stage surgical procedures. The first stage consisted of thoracotomy and tumour removal from the right atrium and inferior vena cava. In the second stage, hysterectomy and bilateral salpingo-oophorectomy was performed. The histological analysis of the excised specimen was consistent with an intravascular leiomyoma. PMID:26643185

  3. Immediate periodontal bone plate changes induced by rapid maxillary expansion in the early mixed dentition: CT findings

    PubMed Central

    Garib, Daniela Gamba; Menezes, Maria Helena Ocké; da Silva Filho, Omar Gabriel; dos Santos, Patricia Bittencourt Dutra

    2014-01-01

    Objective This study aimed at evaluating buccal and lingual bone plate changes caused by rapid maxillary expansion (RME) in the mixed dentition by means of computed tomography (CT). Methods The sample comprised spiral CT exams taken from 22 mixed dentition patients from 6 to 9 years of age (mean age of 8.1 years) presenting constricted maxillary arch treated with Haas-type expanders. Patients were submitted to spiral CT scan before expansion and after the screw activation period with a 30-day interval between T1 and T2. Multiplanar reconstruction was used to measure buccal and lingual bone plate thickness and buccal bone crest level of maxillary posterior deciduous and permanent teeth. Changes induced by expansion were evaluated using paired t test (p < 0.05). Results Thickness of buccal and lingual bone plates of posterior teeth remained unchanged during the expansion period, except for deciduous second molars which showed a slight reduction in bone thickness at the distal region of its buccal aspect. Buccal bone dehiscences were not observed in the supporting teeth after expansion. Conclusion RME performed in mixed dentition did not produce immediate undesirable effects on periodontal bone tissues. PMID:25162564

  4. Enhanced CT and FDG PET/CT in Histiocytic Sarcoma of the Pericardium.

    PubMed

    Dong, Aisheng; Wang, Yang; Cui, Yong; Zuo, Changjing

    2016-04-01

    Histiocytic sarcoma is an extremely rare and aggressive malignant neoplasm of presumed hematopoietic origin. Lymph nodes are the most common sites of involvement. A variety of extranodal sites can be involved, particularly the gastrointestinal tract, soft tissue, skin, and spleen. Radiologic findings of histiocytic sarcoma have been rarely reported. We present a case with histiocytic sarcoma in pericardium, which is an unusual site. Enhanced chest CT showed remarkable enhancement of the tumor. On FDG PET/CT, the tumor showed intense FDG uptake. PMID:26545021

  5. CT Findings of Intrarenal Yolk Sac Tumor with Tumor Thrombus Extending into the Inferior Vena Cava: A Case Report

    PubMed Central

    Lin, ShaoChun; Li, XueHua; Feng, ShiTing; Peng, ZhenPeng; Huang, SiYun; Li, ZiPing

    2014-01-01

    Yolk sac tumor (YST) is a rare germ cell neoplasm of childhood that usually arises from the testis or ovary. The rare cases of YST in various extragonadal locations have been reported, but the primary intrarenal YST is even more uncommon. Here, we report a case of a primary intrarenal YST with tumor thrombus of the inferior vena cava and left renal vein in a 2-year-old boy, with an emphasis on the CT features. To our knowledge, this is the first reported case of an intrarenal YST with intravascular involvement. PMID:25246826

  6. Primary Pulmonary Synovial Sarcoma in a Tertiary Referral Center: Clinical Characteristics, CT, and 18F-FDG PET Findings, With Pathologic Correlations

    PubMed Central

    Kim, Gun Ha; Kim, Mi Young; Koo, Hyun Jung; Song, Joon Seon; Choi, Chang-Min

    2015-01-01

    Abstract The purpose of this study was to describe the patient characteristics, computed tomography (CT) and 18F-fluorodeoxyglucose positron emission tomography (FDG PET) findings, and clinical outcomes of primary pulmonary synovial sarcoma (PPSS), together with their pathologic correlations. The medical records of 14 patients with pathologically proven PPSS in a tertiary hospital from January 1997 to December 2014 were retrospectively reviewed. The CT findings were evaluated. The maximum standardized uptake value (maxSUV) of the tumors was obtained, and clinical outcomes with respect to tumor recurrence and mortality were assessed by KaplanMeier analysis. The median tumor size was 10.2?cm and the most common anatomic location was the lung followed by the pleura/chest wall and mediastinum. Most of the tumors appeared as single lesions and had circumscribed margins. All the cases showed heterogeneous enhancement with necrotic or cystic portions, and intratumoral vessels were frequently seen. Half of the tumors had intratumoral calcifications, and tumor rupture, pleural/chest wall extension, and pleural effusion occurred frequently. However, lymph node enlargement was rare. The median maxSUV of the tumors was 4.35. Patient outcomes with respect to tumor recurrence (n?=?8, 57.1%) and death (n?=?3, 21.4%) were poor despite their young age, and the mean follow-up period was 28.5 months. In conclusion, PPSS usually occurs in young adults, generally in the lung, presents as a large, circumscribed mass, and tumor rupture or extension of the pleura/chest wall may occur. The tumors often contain calcifications and vessels; they may exhibit triple attenuation on enhanced CT images, and clinical outcomes are poor. PMID:26313782

  7. CT Imaging Findings and Their Relevance to the Clinical Outcomes After Stent Graft Repair of Penetrating Aortic Ulcers: Six-year, Single-center Experience

    SciTech Connect

    Shin, Ji Hoon; Angle, John F.; Park, Auh Whan; Anderson, Curtis; Sabri, Saher S.; Turba, Ulku C.; Kern, John A.; Cherry, Kenneth J.; Matsumoto, Alan H.

    2012-12-15

    Purpose: To present the computed tomographic (CT) imaging findings and their relevance to clinical outcomes related to stent graft placement in patients with penetrating aortic ulcers (PAUs). Methods: Medical and imaging records and imaging studies were reviewed for consecutive patients who underwent stent graft repair of a PAU. The distribution and characteristics of the PAU, technical success of stent graft repair, procedure-related complications, associated aortic wall abnormalities, and outcomes of the PAUs at follow-up CT scans were evaluated. Results: Fifteen patients underwent endovascular treatment for PAU. A total of 87% of the PAUs were in the proximal (n = 8) or distal (n = 5) descending thoracic aorta. There was a broad spectrum of PAU depth (mean, 7.9 {+-} 5.6 mm; range 1.5-25.0 mm) and diameter (mean, 13.5 {+-} 9.7 mm; range 2.2-41.0 mm). Atherosclerosis of the thoracic aorta and intramural hematoma were associated in 53 and 93% of the patients, respectively. Technical success was achieved in 100%. Two or more stent grafts were used in five patients. Endoleaks were observed in two patients within 2 weeks of the procedure, both of which resolved spontaneously. At follow-up CT scanning, regression and thrombosis of the PAUs were observed in all patients. The average patient survival was 61.8 months, with an overall mortality of 13% (2 of 15) at follow-up. Neither death was related to the endograft device or the PAU. Conclusion: Endovascular stent graft placement was safe and effective in causing regression and thrombosis of PAUs in this small series of patients. Two or more stent grafts were used in five patients (33%) with associated long-segmental atherosclerotic changes of the thoracic aorta or intramural hematoma.

  8. Hemoperitoneum Caused by Hepatic Necrosis and Rupture Following a Snakebite: a Case Report with Rare CT Findings and Successful Embolization

    PubMed Central

    Ahn, Jae Hong; Yoo, Dong Gon; Choi, Soo-Jung; Lee, Jong Hyeog; Park, Man Soo; Kwak, Jin Ho; Ryu, Dae Shick

    2007-01-01

    We report the computed tomographic and angiographic findings in the case of a recently obtained successful clinical outcome after embolization of the hepatic artery in the case of a snakebite causing hemoperitoneum associated with hepatic necrosis and rupture with active bleeding. PMID:18071289

  9. Serial CT and MRI findings in a patient with isolated angiitis of the central nervous system associated with cerebral amyloid angiopathy.

    PubMed

    Oide, Takashi; Tokuda, Takahiko; Takei, Yo-ichi; Takahashi, Hitoshi; Ito, Kenjiro; Ikeda, Shu-ichi

    2002-12-01

    We report serial CT and MRI findings in a biopsy-proven case of cerebral amyloid angiopathy (CAA) with isolated angiitis of the central nervous system (CNS). A 69-year-old man had developed dizziness, dementia, and generalized seizure during the preceding 4 years. An initial examination by brain CT and MRI showed bilateral symmetrical periventricular lesions closely resembling those of Binswanger's disease. Subsequently, the lesions expanded slowly, involving a large area of the right cerebral hemisphere with an obvious mass effect. Since a primary brain tumor was suspected, a brain biopsy was performed, and histopathological examination revealed amyloid beta protein CAA within the meningocortical vessels associated with perivascular monocytic cuffing, indicating the presence of isolated angiitis of the CNS. Multinucleated giant cells containing intracytoplasmic beta protein amyloid around a heavily amyloid-laden cortical vessel were also observed. This is the first case report to show sequential radiographical studies of the leukoencephalopathy associated with CAA and isolated angiitis of the CNS. PMID:12557755

  10. Clinically-Important Brain Injury and CT Findings in Pediatric Mild Traumatic Brain Injuries: A Prospective Study in a Chinese Reference Hospital

    PubMed Central

    Zhu, Huiping; Gao, Qi; Xia, Xin; Xiang, Joe; Yao, Hongli; Shao, Jianbo

    2014-01-01

    This study investigated injury patterns and the use of computed tomography (CT) among Chinese children with mild traumatic brain injury (MTBI). We enrolled children with MTBI who were treated within 24 hours of head trauma in the emergency department of Wuhan Medical Care Center for Women and Children in Wuhan, China. Characteristics of MTBIs were analyzed by age and gender. Results of cranial CT scan and clinically-important brain injury (ciTBI) for children were obtained. The definition of ciTBI was: death from TBI, intubation for more than 24 h for TBI, neurosurgery, or hospital admission of 2 nights or more. Of 455 eligible patients with MTBI, ciTBI occurred in two, and no one underwent neurosurgical intervention. CT scans were performed for 441 TBI patients (96.9%), and abnormal findings were reported for 147 patients (33.3%, 95% CI 29.037.8). Falls were the leading cause of MTBI (61.5%), followed by blows (18.9%) and traffic collisions (14.1%) for children in the 02 group and 1014 group. For children aged between 3 and 9, the top three causes of TBI were falls, traffic collisions and blows. Leisure activity was the most reported activity when injuries occurred for all age groups. Sleeping/resting and walking ranked in the second and third place for children between 0 and 2 years of age, and walking and riding for the other two groups. The places where the majority injuries occurred were the home for the 02 and 39 years of age groups, and school for the 1014 years of age group. There was no statistical difference between boys and girls with regard to the activity that caused the MTBI. This study highlights the important roles that parents and school administrators in the development of preventive measures to reduce the risk of traumatic brain injury in children. Also, identifying children who had a head trauma at very low risk of clinically important TBI for whom CT might be unnecessary is a priority area of research in China. PMID:24675642

  11. Findings in multi-detector row CT with portal phase enhancement in patients with mesenteric venous thrombosis.

    PubMed

    Acosta, S; Alhadad, A; Ekberg, O

    2009-11-01

    There exists no systematic evaluation on the findings in multi-detector row computed tomography (MDCT) with portal phase enhancement in patients with mesenteric venous thrombosis (MVT). Patients with MVT between 2004 and 2006 were identified at Malm University Hospital, Sweden. Thirty patients had MVT. Median age was 58 years (interquartile range, 46-72), and 57% (17) were men. MDCT with portal phase enhancement showed MVT in 19 out of 20 investigated patients at first evaluation, even though there was clinical suspicion in only one, and conservative management was possible in 19 (95%). Central and peripheral MVT was seen in 20 (100%) and six (30%) cases, respectively. Extra-hepatic and intra-hepatic portal and splenic vein thrombosis was seen in 17 (85%), nine (45%) and 15 (75%) cases, respectively. Venous collaterals were visible in 12 (60%) cases. The most frequent extra-vascular pathologies were mesenteric oedema (50%), ascites (40%), small bowel wall oedema (25%) and local small bowel wall dilatation (20%). The vascular findings in MVT are more pronounced than the intestinal findings in MDCT with portal phase enhancement, and evaluation of the mesenteric vessels should be included in routine MDCT scans for unclear acute abdomen. PMID:19294438

  12. Unusual Crater

    NASA Technical Reports Server (NTRS)

    2003-01-01

    [figure removed for brevity, see original site]

    Released 15 May 2003

    This unusual crater northeast of Ascraeus Mons displays an ejecta blanket that appears turned up around its edges. This may be a type of rampart crater, or may instead be a crater with its ejecta blanket buried by lava flows. These flows were later eroded away in places leaving behind the scarp. Numerous lava flows are seen in this image as well as sinuous channels. These features appear to be both volcanic (rilles) and fluvial channels.

    Image information: VIS instrument. Latitude 16.8, Longitude 257.4East (102.6). 19 meter/pixel resolution.

    Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time.

    NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.

  13. A familial case of Coffin-Lowry syndrome caused by RPS6KA3 C.898C>T mutation associated with multiple abnormal brain imaging findings.

    PubMed

    Tos, T; Alp, M Y; Aksoy, A; Ceylaner, S; Hanauer, A

    2015-01-01

    Coffin-Lowry syndrome (CLS) is a rare X linked mental retardation syndrome characterised by severe psychomotor and growth retardation, distinct facial phenotype, and progressive skeletal malformations. It is caused by mutations in the RPS6KA3 gene located at Xp22.2. In this report we describe a family with CLS consists of three affected males, and two affected females, arising from c.898C>T mutation in RPS6KA3 gene. A 6 year-old, and a 3 year-old boy both had distinct clinical features of Coffin-Lowry syndrome; severe mental and motor retardation, microcephaly, prominent forehead, hypertelorism, large mouth, large ears, large soft hands, puffy tapered fingers, and pectus carinatum. In addition, they had multiple abnormal brain MRI findings. Other siblings presented with a mild and variable phenotype. PMID:26043507

  14. The added value of hybrid ventilation/perfusion SPECT/CT in patients with stable COPD or apparently healthy smokers. Cancer-suspected CT findings in the lungs are common when hybrid imaging is used.

    PubMed

    Jgi, Jonas; Markstad, Hanna; Tufvesson, Ellen; Bjermer, Leif; Bajc, Marika

    2015-01-01

    Ventilation/perfusion (V/P) single-photon emission computed tomography (SPECT) is recognized as a diagnostic method with potential beyond the diagnosis of pulmonary embolism. V/P SPECT identifies functional impairment in diseases such as heart failure (HF), pneumonia, and chronic obstructive pulmonary disease (COPD). The development of hybrid SPECT/computed tomography (CT) systems, combining functional with morphological imaging through the addition of low-dose CT (LDCT), may be useful in COPD, as these patients are prone to lung cancer and other comorbidities. The aim of this study was to investigate the added value of LDCT among healthy smokers and patients with stable COPD, when examined with V/P SPECT/CT hybrid imaging. Sixty-nine subjects, 55 with COPD (GOLD I-IV) and 14 apparently healthy smokers, were examined with V/P SPECT and LDCT hybrid imaging. Spirometry was used to verify COPD grade. Only one apparently healthy smoker and three COPD patients had a normal or nearly normal V/P SPECT. All other patients showed various degrees of airway obstruction, even when spirometry was normal. The same interpretation was reached on both modalities in 39% of the patients. LDCT made V/P SPECT interpretation more certain in 9% of the patients and, in 52%, LDCT provided additional diagnoses. LDCT better characterized the type of emphysema in 12 patients. In 19 cases, tumor-suspected changes were reported. Three of these 19 patients (ie, 4.3% of all subjects) were in the end confirmed to have lung cancer. The majority of LDCT findings were not regarded as clinically significant. V/P SPECT identified perfusion patterns consistent with decompensated left ventricular HF in 14 COPD patients. In 16 patients (23%), perfusion defects were observed. HF and perfusion defects were not recognized with LDCT. In COPD patients and long-time smokers, hybrid imaging had added value compared to V/P SPECT alone, by identifying patients with lung malignancy and more clearly identifying emphysema. V/P SPECT visualizes comorbidities to COPD not seen with LDCT, such as pulmonary embolism and left ventricular HF. PMID:25565797

  15. The added value of hybrid ventilation/perfusion SPECT/CT in patients with stable COPD or apparently healthy smokers. Cancer-suspected CT findings in the lungs are common when hybrid imaging is used

    PubMed Central

    Jgi, Jonas; Markstad, Hanna; Tufvesson, Ellen; Bjermer, Leif; Bajc, Marika

    2015-01-01

    Ventilation/perfusion (V/P) single-photon emission computed tomography (SPECT) is recognized as a diagnostic method with potential beyond the diagnosis of pulmonary embolism. V/P SPECT identifies functional impairment in diseases such as heart failure (HF), pneumonia, and chronic obstructive pulmonary disease (COPD). The development of hybrid SPECT/computed tomography (CT) systems, combining functional with morphological imaging through the addition of low-dose CT (LDCT), may be useful in COPD, as these patients are prone to lung cancer and other comorbidities. The aim of this study was to investigate the added value of LDCT among healthy smokers and patients with stable COPD, when examined with V/P SPECT/CT hybrid imaging. Sixty-nine subjects, 55 with COPD (GOLD IIV) and 14 apparently healthy smokers, were examined with V/P SPECT and LDCT hybrid imaging. Spirometry was used to verify COPD grade. Only one apparently healthy smoker and three COPD patients had a normal or nearly normal V/P SPECT. All other patients showed various degrees of airway obstruction, even when spirometry was normal. The same interpretation was reached on both modalities in 39% of the patients. LDCT made V/P SPECT interpretation more certain in 9% of the patients and, in 52%, LDCT provided additional diagnoses. LDCT better characterized the type of emphysema in 12 patients. In 19 cases, tumor-suspected changes were reported. Three of these 19 patients (ie, 4.3% of all subjects) were in the end confirmed to have lung cancer. The majority of LDCT findings were not regarded as clinically significant. V/P SPECT identified perfusion patterns consistent with decompensated left ventricular HF in 14 COPD patients. In 16 patients (23%), perfusion defects were observed. HF and perfusion defects were not recognized with LDCT. In COPD patients and long-time smokers, hybrid imaging had added value compared to V/P SPECT alone, by identifying patients with lung malignancy and more clearly identifying emphysema. V/P SPECT visualizes comorbidities to COPD not seen with LDCT, such as pulmonary embolism and left ventricular HF. PMID:25565797

  16. Visualization of an Incidental Ectopic Gallbladder Location on 99mTc-MIBI Myocardial Perfusion Imaging With SPECT/CT.

    PubMed

    Hou, Po-Nien; Huang, Cheng-Kai; Wu, Jay

    2016-03-01

    An ectopically located gallbladder is rare and unusual. In this study, we described a case of a 52-year-old woman who underwent SPECT-myocardial perfusion imaging because of exertional dyspnea and chest tightness. The rest sinograms reveal 2 substantially increased tracer uptakes in the right chest. Subsequently, a SPECT/CT scan was performed to clarify the indeterminate findings on the SPECT-myocardial perfusion imaging. The coregistered SPECT/CT images depict intense focal activity in the right chest, which corresponds to the gallbladder on the CT scan, thus explaining the peculiar ectopic gallbladder finding. PMID:26402125

  17. A complex de novo translocation of chromosomes 4, 6 and 21 in a child with dysmorphic features and unusual hematological findings

    SciTech Connect

    Muneer, R.S.; Hopcus, D.J.; Sarale, C.

    1994-09-01

    A 5 1/2-year-old white male was referred to our institution for evaluation of easy bruising confined to lower extremities since infancy. His family history is not significant with healthy parents and six normal siblings. Physical examination revealed weight and height both in 50th and 75th percentile, respectively. Major findings included macrocephaly with prominent forehead, hypertelorism with inner and outer canthus distances both above 97th percentile, epicanthus folds, normal ears with prominent upper pinnae, thin, sharp nose with pointed tip, neck with pterygium coli appearance and shortened clavicles, short thumbs with hyperconvex nails that curved around tip of fingers, abnormally bowed elbows and knee joints, prominent abdomen with omphalocele and flat feet with hypoplastic nails. He has a speech articulation problem which may be due to high arched palate. Hematological evaluation revealed PT/PTT values in normal range with prolonged bleeding time > 15 minutes. Because of abnormal elbow and knee joints, Mitromycin C Stress test was performed to rule out Fanconi`s anemia (FA). The chromosome breakage frequency was found to be within the normal range for both the patient and the control. Thus, the diagnosis of FA was ruled out. However, cytogenetic analysis revealed a three-way complex translocation between chromosomes 4, 6 and 21 with an apparent balanced carrier male karyotype: 46,XY,t(4;6;21)(4qter{r_arrow}4p16::21q21{r_arrow} 21qter;6qter{r_arrow}6p21.1::4p16{r_arrow}4pter;21pter{r_arrow} 21q21::6p21.1{r_arrow}6pter). Both parents have normal chromosomes.

  18. Evaluation of the relationship between smear positivity and high-resolution CT findings in children with pulmonary tuberculosis

    PubMed Central

    Bolursaz, Mohammad Reza; Mehrian, Payam; Aghahosseini, Farahnaz; Lotfian, Ferial; Khalilzadeh, Soheila; Baghaie, Nooshin; Hassanzad, Maryam; Velayati, Ali Akbar

    2014-01-01

    Summary Background The aim of this study is to find a relationship between the radiological manifestations of childhood tuberculosis on a high-resolution computed tomography (HRCT) and the results of sputum smear. This study aims to propose an alternative indicator of infectivity in terms of prevention of disease transmission through selective isolation policy in children whose clinical condition is highly suggestive of tuberculosis. Material/Methods This retrospective comparative study was performed on 95 children under 15 years of age diagnosed with tuberculosis based on both WHO criteria and positive sputum culture for mycobacterium Tuberculosis. The children were admitted for TB screening in the pediatric department of national research institute of tuberculosis and lung disease (NRITLD) between 20082012. Direct smear collected from sputum or gastric lavage, as well as HRCT were performed in all children prior to administration of medical therapy. Children were divided into 2 groups based on positive and negative smear results. HRCT abnormalities, as well as their anatomical distribution were compared between these 2 groups using multivariate analytic model. Results The most prevalent abnormalities in the positive smear group were consolidation, tree-in-bud pattern, upper lobe nodular infiltration and cavitation. The negative smear group featured lymphadenopathy, consolidation, collapse and nodular infiltration in the upper lobe. Cavity, tree- in-bud pattern and upper lobe nodular infiltration were highly associated with smear positivity in children. Conversely, lymphadenopathy and collapse had significant association with a negative smear. Conclusions This study revealed that cavity, tree-in-bud and upper lobe nodular infiltration has significant association with smear positivity in childhood tuberculosis. On the other hand, lymphadenopathy and collapse were closely associated with smear negativity in this age group. It was also demonstrated that children with a positive smear most likely presented with radiological features of post primary tuberculosis, while the negative smear group most often manifested with primary tuberculosis. PMID:24883144

  19. A case of boomerang dysplasia with a novel causative mutation in filamin B: identification of typical imaging findings on ultrasonography and 3D-CT imaging.

    PubMed

    Tsutsumi, Seiji; Maekawa, Ayako; Obata, Miyuki; Morgan, Timothy; Robertson, Stephen P; Kurachi, Hirohisa

    2012-01-01

    Boomerang dysplasia is a rare lethal osteochondrodysplasia characterized by disorganized mineralization of the skeleton, leading to complete nonossification of some limb bones and vertebral elements, and a boomerang-like aspect to some of the long tubular bones. Like many short-limbed skeletal dysplasias with accompanying thoracic hypoplasia, the potential lethality of the phenotype can be difficult to ascertain prenatally. We report a case of boomerang dysplasia prenatally diagnosed by use of ultrasonography and 3D-CT imaging, and identified a novel mutation in the gene encoding the cytoskeletal protein filamin B (FLNB) postmortem. Findings that aided the radiological diagnosis of this condition in utero included absent ossification of two out of three long bones in each limb and elements of the vertebrae and a boomerang-like shape to the ulnae. The identified mutation is the third described for this disorder and is predicted to lead to amino acid substitution in the actin-binding domain of the filamin B molecule. PMID:22354125

  20. Focal hepatic fatty infiltration in the posterior edge of the medial segment associated with aberrant gastric venous drainage: CT, US, and MR findings

    SciTech Connect

    Kawamori, Yashuiro; Matsui, Osamu; Takahashi, S.

    1996-05-01

    The purpose of this study is to demonstrate the relation between focal hepatic fatty infiltration and aberrant gastric venous drainage (AGVD) in the posterior edge of the medial segment (PEMS) of the liver and we present two cases of focal hepatic fatty infiltration with AGVD in the PEMS and discuss their imaging features. In both cases the focal fatty infiltration areas were hyperechoic on sonography, hypodense on CT, and hyperintense on T1-weighted MRI. Computed tomography during arterial portography (CTAP) showed nodular perfusion defects corresponding to the areas in both cases, and early enhancement of the area was observed with dynamic MRI in one case. Although the findings on CTAP and dynamic MRI suggested a neoplastic nature for the lesions, focal fatty infiltration was confirmed with surgical resection in one case and with imaging follow-up in the other. Aberrant gastric venous drainage into the area was demonstrated on arteriography in both cases. The variation in blood supply caused by AGVD may play an important role in fatty metabolism in the PENIS of the liver and may influence imaging features. 9 refs., 2 figs.

  1. Factors affecting uncertainty in lung nodule volume estimation with CT: comparisons of findings from two estimation methods in a phantom study

    NASA Astrophysics Data System (ADS)

    Li, Qin; Gavrielides, Marios A.; Zeng, Rongping; Myers, Kyle J.; Sahiner, Berkman; Petrick, Nicholas

    2015-03-01

    This work aimed to compare two different types of volume estimation methods (a model-based and a segmentationbased method) in terms of identifying factors affecting measurement uncertainty. Twenty-nine synthetic nodules with varying size, radiodensity, and shape were placed in an anthropomorphic thoracic phantom and scanned with a 16- detector row CT scanner. Ten repeat scans were acquired using three exposures and two slice collimations, and were reconstructed with varying slice thicknesses. Nodule volumes were estimated from the reconstructed data using a matched-filter and a segmentation approach. Log transformed volumes were used to obtain measurement error with truth obtained through micro-CT. ANOVA and multiple linear regression were applied to measurement error to identify significant factors affecting volume estimation for each method. Root mean square of measurement errors (RMSE) for meaningful subgroups, repeatability coefficients (RC) for different imaging protocols, and reproducibility coefficients (RDC) for thin and thick collimation conditions were evaluated. Results showed that for both methods, nodule size, shape and slice thickness were significant factors. Collimation was significant for the matched-filter method. RMSEs for matched-filter measurements were in general smaller than segmentation. To achieve RMSE on the order of 15% or less for {5, 8, 9, 10mm} nodules, the corresponding maximum allowable slice thicknesses were {3, 5, 5, 5mm} for the matched-filter and {0.8, 3, 3, 3mm} for the segmentation method. RCs showed similar patterns for both methods, increasing with slice thickness. For 8-10mm nodules, the measurements were highly repeatable provided the slice thickness was ≤3mm, regardless of method and across varying acquisition conditions. RDCs were lower for thin collimation than thick collimation protocols. While RDC of matched filter volume estimation results was always lower than segmentation results, for 8-10mm nodules with thin collimation protocols, the measurements for both approaches were highly reproducible (RDC on the order of 15% or less). These findings are valuable for validating lung nodule volume as a quantitative imaging biomarker.

  2. Unusual methods of suicide: complexities in investigation.

    PubMed

    Arun, M; Palimar, Vikram; Kumar, Pramod G N; Menezes, Ritesh G

    2010-07-01

    Differentiation between suicide and homicide often becomes difficult owing to the unusual methods of suicide used by the victim and the complexities thus posed. Investigating the cases of unusual suicides provides a considerable challenge to the authorities concerned. The issue of homicide should often be ruled out in such cases, which require careful evaluation. This is best done by correlating the morbid anatomical findings at autopsy with the death scene analysis coupled with psychological autopsy. Many forensic practitioners have reported unusual methods of suicide at their respective workplaces. Various types of unusual methods of suicide and the complexities involved in their investigation are presented and discussed. PMID:21133267

  3. Unusual spacecraft materials

    NASA Technical Reports Server (NTRS)

    Post, Jonathan V.

    1990-01-01

    For particularly innovative space exploration missions, unusual requirements are levied on the structural components of the spacecraft. In many cases, the preferred solution is the utilization of unusual materials. This trend is forecast to continue. Several hypothetic examples are discussed.

  4. The 18F-FDG PET/CT finding of a condyloma acuminata mimicking primary anorectal carcinoma in an HIV-infected patient.

    PubMed

    Kim, Bom Sahn

    2013-10-01

    This case report describes a condyloma acuminata with intense FDG uptake mimicking primary anorectal carcinoma in an HIV-infected patient.A 44-year-old HIV-positive homosexual man with a history of lymphoma underwent an 18F-FDG PET/CT for restaging. A focal intense hypermetabolic lesion around the anorectal area was found by the PET/CT and it was suggested as a tumorous lesion. However, the lesion was not detected on the contrast-enhanced abdominal CT. Via a sigmoidoscopy, cauliflower-like masses were visualized in the intra-anal area. The tumor was surgically excised and proven to be condyloma acuminata by permanent pathology. PMID:22996249

  5. The more you look, the more you find: challenging results on FDG-PET CT in a patient with neurofibromatosis type I

    PubMed Central

    2014-01-01

    Background FDG-PET/CT is part of the standard diagnostic management of a patients with a large variety of common and less common malignant tumors, based on the increased glucose metabolism within tumors. Case presentation A hybrid fluorodeoxyglucose positron emission tomography and computed tomography (FDG-PET/CT) was performed in a neurofibromatosis patient to rule out relapse of malignant peripheral nerve sheet tumor. The scan revealed non-malignant neurofibromas, a testis seminoma and hypermetabolic syphilitic granulomata. Conclusion This case stresses the need to rule out infectious diseases when atypical hypermetabolic lesions are present. PMID:24885974

  6. Multi-detector thoracic CT findings in cerebro-costo-mandibular syndrome: rib gaps and failure of costo-vertebral separation.

    PubMed

    Watson, Tom Anthony; Arthurs, Owen John; Muthialu, Nagarajan; Calder, Alistair Duncan

    2014-02-01

    Cerebro-costo-mandibular syndrome (CCMS) describes a triad of mandibular hypoplasia, brain dysfunction and posterior rib defects ("rib gaps"). We present the CT imaging for a 2-year-old girl with CCMS that highlights the rib gap defects and shows absent transverse processes with abnormal fusion of the ribs directly to the vertebral bodies. We argue that this is likely to relate to abnormal lateral sclerotome development in embryology, with the failure of normal costo-vertebral junctions compounding impaired thoracic function. The case also highlights the use of CT for specific indications in skeletal dysplasia. PMID:24100706

  7. Supraclavicular Lymphnodes: Unusual Manifestation of Metastase Adenocarcinoma Colon.

    PubMed

    Achmad, Harijono; Hanifa, Rofika

    2015-10-01

    We report a patient with supraclavicular lymph node metastasis from an undetectable adenocarcinoma of the transverse colon, who presented with cough and was diagnosed with typhoid fever, bronchitis as well as liver metastasis. There were an abdominal fullness, weight loss, constipation, pencil-like stool with mucous and blood, low-grade fever, bone ache, and tea-color urine. The first colonoscopy revealed lymphocytic ileitis and microscopic findings also showed lymphocytic ileitis. Abdominal USG and CT revealed liver metastasis of unknown origin. Based on the clinical sign and symptoms, we suspected that colorectal carcinoma was the primary site. Then, the second colonoscopy was performed and it revealed a small polyp, which was followed with a biopsy and the result supported a well-differentiated colon adenocarcinoma. Similar result was also revealed by the histopathological evaluation. This is an unusual case of liver and supraclavicular lymph node metastasis arising from a small polyp adenocacinoma of the transverse colon. PMID:26932703

  8. Diagnostic efficacy of gadoxetic acid (Primovist)-enhanced MRI and spiral CT for a therapeutic strategy: comparison with intraoperative and histopathologic findings in focal liver lesions.

    PubMed

    Hammerstingl, Renate; Huppertz, Alexander; Breuer, Josy; Balzer, Thomas; Blakeborough, Anthony; Carter, Rick; Fust, Lluis Castells; Heinz-Peer, Gertraud; Judmaier, Werner; Laniado, Michael; Manfredi, Riccardo M; Mathieu, Didier G; Mller, Dieter; Mortel, Koenraad; Reimer, Peter; Reiser, Maximilian F; Robinson, Philip J; Shamsi, Kohkan; Strotzer, Michael; Taupitz, Matthias; Tombach, Bernd; Valeri, Gianluca; van Beers, Bernhard E; Vogl, Thomas J

    2008-03-01

    A multicenter study has been employed to evaluate the diagnostic efficacy of magnetic resonance imaging (MRI) using the new liver-specific contrast agent gadoxetic acid (Gd-EOB-DTPA, Primovist), as opposed to contrast-enhanced biphasic spiral computed tomography (CT), in the diagnosis of focal liver lesions, compared with a standard of reference (SOR). One hundred and sixty-nine patients with hepatic lesions eligible for surgery underwent Gd-EOB-DTPA-enhanced MRI as well as CT within 6 weeks. Pathologic evaluation of the liver specimen combined with intraoperative ultrasound established the SOR. Data sets were evaluated on-site (14 investigators) and off-site (three independent blinded readers). Gd-EOB-DTPA was well tolerated. Three hundred and two lesions were detected in 131 patients valid for analysis by SOR. The frequency of correctly detected lesions was significantly higher on Gd-EOB-DTPA-enhanced MRI compared with CT in the clinical evaluation [10.44%; 95% confidence interval (CI): 4.88, 16.0]. In the blinded reading there was a trend towards Gd-EOB-DTPA-enhanced MRI, not reaching statistical significance (2.14%; 95% CI: -4.32, 8.6). However, the highest rate of correctly detected lesions with a diameter below 1 cm was achieved by Gd-EOB-DTPA-enhanced MRI. Differential diagnosis was superior for Gd-EOB-DTPA-enhanced MRI (82.1%) versus CT (71.0%). A change in surgical therapy was documented in 19 of 131 patients (14.5%) post Gd-EOB-DTPA-enhanced MRI. Gd-EOB-DTPA-enhanced MRI was superior in the diagnosis and therapeutic management of focal liver lesions compared with CT. PMID:18058107

  9. Chemical-shift MRI of rebound thymic hyperplasia with unusual appearance and intense (18)F-FDG uptake in adulthood: report of two cases.

    PubMed

    Priola, Adriano Massimiliano; Priola, Sandro Massimo

    2014-01-01

    Rebound thymic hyperplasia (RTH) with increased (18)F-FGD uptake at positron emission tomography (PET) computed tomography (CT) is typical of pediatric patients after chemotherapy, although it may occasionally occur in adults. At CT, RTH usually appears as a diffusely enlarged thymus with areas of fatty attenuation. We report two cases of RTH in adults detected at follow-up: both showed unusual morphology on CT and were confirmed at PET-CT as areas of strongly increased radiopharmaceutical uptake, which suggested disease recurrence. Chemical-shift magnetic resonance imaging, however, demonstrated fat infiltration within the tissue. Such finding was consistent with the diagnosis of RTH and was paramount in preventing unnecessary invasive procedures or treatments. PMID:24667047

  10. Exogenous lipoid pneumonia secondary to Vaseline application to the tracheostomy in a laryngectomy patient: PET/CT and MR imaging findings.

    PubMed

    Gorospe, Luis; Gallego-Rivera, Jos Ignacio; Hervs-Morn, Asuncin

    2013-01-01

    A 67-year-old female ex-smoker was referred to our hospital after chest radiographs revealed a nonresolving opacity in the right lower lung. Her past medical history was significant for laryngeal cancer. A whole-body positron emission tomography/computed tomography (CT) confirmed an ill-defined fluorodeoxyglucose-avid peribronchial opacity in the right middle and inferior lobes. The CT component of the study showed focal areas of low attenuation within the lung opacity; these focal areas followed fat signal intensity on a magnetic resonance study, confirming the suspicion of exogenous lipoid pneumonia. The patient admitted to applying petroleum jelly (Vaseline) to her tracheostomy in order to moisturize the area around the stoma. PMID:23206626

  11. Tuberculous peritonitis: CT appearance

    SciTech Connect

    Hanson, R.D.; Hunter, T.B.

    1985-05-01

    Rare, sporadic cases of tuberculous peritonitis do occur in the United States and other advanced countries. Because there are few descriptions of the CT appearance of the peritoneal forms of tuberculous (TB), this report illustrates a case of tuberculous peritonitis with prominent CT findings and discusses the differentiation of this entity from other, more common diseases.

  12. Primary lower extremity lymphedema: CT diagnosis

    SciTech Connect

    Gamba, J.L.; Silverman, P.M.; Ling, D.; Dunnick, N.R.; Korobkin, M.

    1983-10-01

    The CT findings of two cases of primary lymphedema of the lower extremities are presented. CT showed a coarse, nonenhancing, reticular pattern in an enlarged subcutaneous compartment. CT excluded the diagnosis of secondary lymphedema from an obstructing mass by demonstrating a normal retroperitoneum and pelvis. The CT findings are correlated with pedal lymphangiograms.

  13. FDG PET/CT Findings of the Recurrent Posttransplantation Lymphoproliferative Disorder in a Pediatric Liver Transplant Recipient With Right Leg Pain as the Only Complaint.

    PubMed

    Bai, Xia; Yang, Hua; Zhuang, Hongming

    2015-10-01

    The most commonly observed symptoms of posttransplantation lymphoproliferative disorder (PTLD) after a liver transplantation were diarrhea and fever. Although PTLD can involve bones, bone pain is a rare manifestation of PTLD, much less to say a sole presentation. We report a case of a pediatric patient with recurrent PTLD after liver transplantation, whose only complaint was right tibial pain. FDG PET/CT revealed not only hypermetabolic activity in the right proximal tibia but also in many other parts of the body. Recurrent PTLD was confirmed after bone biopsy. PMID:26098286

  14. Lung in Dengue: Computed Tomography Findings

    PubMed Central

    Rodrigues, Rosana Souza; Brum, Ana Livia Garcia; Paes, Marciano Viana; Pvoa, Tiago Fajardo; Basilio-de-Oliveira, Carlos Alberto; Marchiori, Edson; Borghi, Danielle Provenano; Ramos, Grazielle Viana; Bozza, Fernando Augusto

    2014-01-01

    Background Dengue is the most important mosquito-borne viral disease in the world. Dengue virus infection may be asymptomatic or lead to undifferentiated fever, dengue fever with or without warning signs, or severe dengue. Lower respiratory symptoms are unusual and lung-imaging data in patients with dengue are scarce. Methodology/Principal Findings To evaluate lung changes associated with dengue infection, we retrospectively analyzed 2,020 confirmed cases of dengue. Twenty-nine of these patients (11 females and 18 males aged 1690 years) underwent chest computed tomography (CT), which yielded abnormal findings in 17 patients: 16 patients had pleural effusion (the sole finding in six patients) and 11 patients had pulmonary abnormalities. Lung parenchyma involvement ranged from subtle to moderate unilateral and bilateral abnormalities. The most common finding was ground-glass opacity in eight patients, followed by consolidation in six patients. Less common findings were airspace nodules (two patients), interlobular septal thickening (two patients), and peribronchovascular interstitial thickening (one patient). Lung histopathological findings in four fatal cases showed thickening of the alveolar septa, hemorrhage, and interstitial edema. Conclusions/Significance In this largest series involving the use of chest CT to evaluate lung involvement in patients with dengue, CT findings of lower respiratory tract involvement were uncommon. When abnormalities were present, pleural effusion was the most frequent finding and lung involvement was often mild or moderate and bilateral. Extensive lung abnormalities are infrequent even in severe disease and when present should lead physicians to consider other diagnostic possibilities. PMID:24836605

  15. An Unusual Lunar Halo

    ERIC Educational Resources Information Center

    Cardon, Bartley L.

    1977-01-01

    Discusses a photograph of an unusual combination of lunar halos: the 22-degree refraction halo, the circumscribed halo, and a reflection halo. Deduces the form and orientations of the ice crystals responsible for the observed halo features. (MLH)

  16. Prostate Cancer Metastases to Inguinal Lymph Nodes Detected by Attenuation-Corrected 11C-Acetate PET/CT.

    PubMed

    Shah, Veer A; Rixey, Allison; Dusing, Reginald

    2016-03-01

    The inguinal lymph nodes are an unusual site of metastases for prostate adenocarcinoma. We present a case in which a 61-y-old man with biochemically recurrent prostate cancer underwent attenuation-corrected (11)C-acetate PET/CT, which demonstrated multiple foci of increased activity in the left inguinal, left iliac chain, and right inguinal regions. The attenuation-corrected CT portion of the scan also showed anterior wall thickening of the rectum. The imaging findings were suggestive of metastatic involvement of the rectum below the dentate line with subsequent spread to the inguinal lymph nodes. PMID:26111708

  17. Diffusion-Weighted MRI in the Assessment of Early Treatment Response in Patients with Squamous-Cell Carcinoma of the Head and Neck: Comparison with Morphological and PET/CT Findings

    PubMed Central

    Martins, Eduardo Bruno Lobato; Chojniak, Rubens; Kowalski, Luis Paulo; Nicolau, Ulisses Ribaldo; Lima, Eduardo Nbrega Pereira; Bitencourt, Almir Galvo Vieira

    2015-01-01

    Objective To evaluate changes in apparent diffusion coefficients (ADC) as measured by magnetic resonance imaging (MRI) before and after the treatment of primary tumors and cervical metastases in patients with squamous-cell carcinoma (SCC) of the head and neck, and to compare these values to the results of widely used morphological criteria and [18F]-FDG PET/CT findings. Material and Method This was a longitudinal, prospective, single-center nonrandomized trial involving patients with head and neck SCC treated with chemotherapy alone or in combination with radiotherapy. Imaging examinations ([18F]-FDG PET/CT and diffusion-weighted MRI) were performed on the same day, up to one day prior to the beginning of the first treatment cycle, and on the 14th day of the first chemotherapy cycle. Treatment response was evaluated based on the Response Evaluation Criteria in Solid Tumors (RECIST) and World Health Organization (WHO) morphological criteria, as well as PET Response Criteria in Solid Tumors (PERCIST) metabolic criteria. Results Seventy-five lesions were examined in 23 patients. Pre- and post-treatment comparisons of data pertaining to all target lesions revealed reductions in tumor size and SUV, as well as increases in ADC values, all of which were statistically significant. The increase in ADC following treatment was significantly higher in patients classified as complete responders by both morphological criteria than that observed in any of the other patient groups of response. Patients with a complete metabolic response also showed greater increases in ADC values as compared to the remaining groups. Conclusion The assessment of tumor response based on diffusion-weighted MRI showed an increase in the ADC of cervical lesions following treatment, which was corroborated by morphological and metabolic findings. Associations between changes in ADC values and treatment response categories using morphologic criteria and [18F]-FDG PET/CT were only identified in complete responders. PMID:26562784

  18. Unusual presentation of carcinoma of penis.

    PubMed

    Malik, Gulzar Ahmad

    2008-01-01

    A case of carcinoma of the penis in a 55-year-old landlord is described. He presented with a fungating growth on the shaft of his penis with an unusual history. The lesion started as a nodule in the coronal sulcus leading to thinning of urinary stream and ultimately retention of urine, which was diagnosed and treated as a case of urethral stricture. Wedge biopsy of the growth revealed the case of squamous cell carcinoma of penis. Ultrasonography and CT scan of pelvis and abdomen proved the disease to be localized to penis and total penectomy was carried out. PMID:18452667

  19. Microfilaria Coexistent with Fibroadenoma An Unusual Association

    PubMed Central

    Sane, Kavita Chandrahas; Bholay, Sandhya Unmesh; Kulkarni, Manoj Narayan

    2015-01-01

    Filariasis is an endemic problem in India. Involvement of breast by filariasis is uncommon, but known to occur in endemic areas. However, microfilaria co-existing with neoplastic lesions is very rare. Here we report an unusual finding of microfilaria co-existing with fibroadenoma in a 20-year-old female patient. PMID:26557533

  20. Progression of Infection after Surgical CT Navigation-Assisted Aspiration Biopsy of a Vertebral Abscess

    PubMed Central

    Spyropoulou, Vasiliki; Valaikaite, Raimunda; Dhouib, Amira; Dayer, Romain; Ceroni, Dimitri

    2016-01-01

    Background Context. Computed tomography- (CT-) guided fine-needle aspiration biopsy of the vertebral body is an important tool in the diagnostic evaluation of vertebral osteomyelitis. The procedure is considered simple to perform and it is considered a safe procedure with few complications. Purpose. The purpose of this study was to describe an unusual complication due to a CT-guided fine-needle aspiration biopsy of the vertebral body of L3, to better understand the relationship between surgical procedure and complication, and to reflect on how to avoid it. Study Design/Setting. Case report and literature review. Methods. The medical records, laboratory findings, and radiographic imaging studies of an 11-year-old boy, with an unusual complication due to a CT-guided fine-needle aspiration biopsy of the vertebral body of L3, were reviewed. Results. We report a case of vertebral osteomyelitis of L3 caused by methicillin-sensitive Staphylococcus aureus (MSSA). Following a computed tomography-guided aspiration biopsy of the vertebral body of L3, vertebral osteomyelitis rapidly progressed into the vertebral body of L4 as well as the L3-L4 disk. Conclusions. Based on the present case, one should consider that a CT-guided fine-needle aspiration biopsy of the vertebral body may be complicated by a progression of a vertebral osteomyelitis into both the intervertebral disk and also the adjacent vertebral body. PMID:26949558

  1. [Usefulness of multi-plane dynamic subtraction CT (MPDS-CT) for intracranial high density lesions].

    PubMed

    Takagi, R; Kumazaki, T

    1996-02-01

    We present a new CT technique using the high speed CT scanner in detection and evaluation of temporal and spatial contrast enhancement of intracranial high density lesions. A Multi-Plane Dynamic Subtraction CT (MPDS-CT) was performed in 21 patients with intracranial high density lesions. These lesions consisted of 10 brain tumors, 7 intracerebral hemorrhages and 4 vascular malformations (2 untreated, 2 post embolization). Baseline study was first performed, 5 sequential planes of covering total high density lesions were selected. After obtaining the 5 sequential CT images as mask images, three series of multi-plane dynamic CT were performed for the same 5 planes with a intravenous bolus injection of contrast medium. MPDS-CT images were reconstructed by subtracting dynamic CT images from the mask ones. MPDS-CT were compared with conventional contrast-enhanced CT. MPDS-CT images showed the definite contrast enhancement of high density brain tumors and vascular malformations which were not clearly identified on conventional contrast-enhanced CT images because of calcified or hemorrhagic lesions and embolic materials, enabling us to except enhanced abnormalities with non-enhanced areas such as unusual intracerebral hemorrhages. MPDS-CT will provide us further accurate and objective information and will be greatly helpful for interpreting pathophysiologic condition. PMID:8725335

  2. Rare and challenging extra-axial brain lesions: CT and MRI findings with clinico-radiological differential diagnosis and pathological correlation

    PubMed Central

    Demir, Mustafa Kemal; Yap?c?er, zlem; Onat, Elif; Tokta?, Zafer Orkun; Akak?n, Ak?n; Urgun, Kamran; K?l?, Trker

    2014-01-01

    There are many kinds of extra-axial brain tumors and tumor-like lesions, and definitive diagnosis is complicated in some cases. In this pictorial essay, we present rare and challenging extra-axial brain lesions including neuroenteric cyst, primary leptomeningeal melanomatosis, isolated dural neurosarcoidosis, intradiploic epidermoid cyst, ruptured dermoid cyst, intraventricular cavernoma, and cavernous hemangioma of the skull with imaging findings and clinico-radiological differential diagnosis, including the pathologic correlation. Familiarity with these entities may improve diagnostic accuracy and patient management. PMID:25010368

  3. Unusual causes of pneumothorax

    PubMed Central

    Ouellette, Daniel R.; Parrish, Scott; Browning, Robert F.; Turner, J. Francis; Zarogoulidis, Konstantinos; Kougioumtzi, Ioanna; Dryllis, Georgios; Kioumis, Ioannis; Pitsiou, Georgia; Machairiotis, Nikolaos; Katsikogiannis, Nikolaos; Tsiouda, Theodora; Madesis, Athanasios; Karaiskos, Theodoros

    2014-01-01

    Pneumothorax is divided to primary and secondary. It is a situation that requires immediate treatment, otherwise it could have severe health consequences. Pneumothorax can be treated either by thoracic surgeons, or pulmonary physicians. In our current work, we will focus on unusual cases of pneumothorax. We will provide the etiology and treatment for each case, also a discussion will be made for each situation. PMID:25337394

  4. Leiomyosarcoma: computed tomographic findings

    SciTech Connect

    McLeod, A.J.; Zornoza, J.; Shirkhoda, A.

    1984-07-01

    The computed tomographic (CT) findings in 118 patients with the diagnosis of leiomyosarcoma were reviewed. The tumor masses visualized in these patients were often quite large; extensive necrotic or cystic change was a frequent finding. Calcification was not observed in these tumors. The liver was the most common site of metastasis in these patients, with marked necrosis of the liver lesions a common finding. Other manifestations of tumor spread included pulmonary metastases, mesenteric or omental metastases, retroperitoneal lymphadenopathy, soft-tissue metastases, bone metastases, splenic metastases, and ascites. Although the CT appearance of leiomyosarcoma is not specific, these findings, when present, suggest consideration of this diagnosis.

  5. An unusual myocardial infarction

    PubMed Central

    Di Michele, Sara; Mirabelli, Francesca; Mankad, Sunil

    2014-01-01

    Summary We present a 74-year-old male with a chondrosarcoma, who presented with chest pain. The history, electrocardiogram (ECG), and biomarkers established the diagnosis of myocardial infarction (MI); angiography did not show coronary atherosclerosis and, both initial transthoracic echocardiogram and chest computed tomography (CT), did not demonstrate any cardiac abnormalities. A second echocardiogram following a routine ECG showed presence of a mass involving the right ventricle and the cardiac apex that was confirmed by chest CT scan. We underline the importance of considering cardiac tumors in the clinical arena of MI management. Learning points Cardiac tumors cause ECG changes similar to ischemic heart diseases.Keep in mind cardiac tumors when performing transthoracic echocardiogram (TTE) in the setting of suspected MI.TTE is the technique of choice in detecting cardiac tumors.

  6. Unusual subclavian steal phenomenon.

    PubMed Central

    Latifi?-Jasnic, D; Zorman, D; Cijan, A; Rakovec, P

    1994-01-01

    A patient who had undergone myocardial revascularization with a saphenous vein graft to the left anterior descending artery and a left internal thoracic (mammary) artery graft to the 1st diagonal branch presented with an unusual form of subclavian steal syndrome. Occlusion of both the left subclavian and the left anterior descending arteries caused retrograde flow through the internal thoracic artery to the distal subclavian artery; the blood flow was supplied by the vein graft via the distal left anterior descending artery and diagonal branch. Images PMID:8000274

  7. [Unusual antenatal gestational choriocarcinoma].

    PubMed

    Tardif, C; Nowak, C; Sagan, C; Frenel, J-S; Philippe, H-J

    2014-10-01

    Choriocarcinoma is a rare and aggressive tumor that occurs mainly after a molar pregnancy, and exceptionally during a diploid viable pregnancy. We report a case of a 30 years old primipare that revealed a choriocarcinoma at 37 weeks by a generalized seizure. This unusual event did not, however, delay the early introduction of chemotherapy even in the absence of histological diagnosis. This diagnosis must be evoked in woman with genital activity presenting an unknown tumor. Treatment can be started without waiting for the histological evidence, due to the important feature of the hCG assay, significantly improving the prognosis. PMID:25242439

  8. Unusual sudden death.

    PubMed Central

    Warren, J. V.

    1985-01-01

    In contrast to usual sudden death seen in the course of coronary artery disease, individuals dying suddenly from other causes form a complex array of situations. In some the causes are readily identifiable. No simple pattern is available to identify the potential candidate, but on review of the many causes some moves by the physician may be helpful. For example, a more complete physical evaluation of young individuals participating in competitive athletics is in order. This is particularly true if the athlete reports an episode of unexplained syncope. This may well be the warning of a propensity towards sudden death under physical and emotional stress. Knowledge of the specific problems in underwater swimming and diving, in high altitude exposure and in various circumstances such as certain weight reduction diets and industrial exposures may lead to control of some types of unusual sudden death. Clearly, more studies are needed to give answers in so called crib death. As the incidence of usual sudden death falls, these unusual forms of sudden death will represent a more important fraction of sudden death in general. PMID:6537674

  9. Unusual infections in humans.

    PubMed Central

    Neafie, R C; Marty, A M

    1993-01-01

    Nine cases of unusual infections in humans are presented. In each case, we present the clinical history, histopathologic changes (if indicated), morphologic features of the causative organism, diagnosis, discussion, differential diagnosis, therapy, and current literature. All of the cases are illustrated with pertinent photographs. The nine cases are as follows: (i) acanthocephaliasis, the first acquired human infection by Moniliformis moniliformis in the United States; (ii) dipylidiasis, an uncommon infection caused by the dog tapeworm, Dipylidium caninum; (iii) granulomatous amebic encephalitis, caused by the recently identified leptomyxid group of amebae; (iv) schistosomiasis, a dual infection of the urinary bladder with the rare presentation of both adult worms and eggs of Schistosoma haematobium and Schistosoma mansoni in tissue sections; (v) syphilitic gastritis, an uncommon presentation of Treponema pallidum infection, in a patient with an additional incidental infection by Helicobacter pylori; (vi) microsporidiosis, the only infection caused by a Pleistophora sp. in humans; (vii) sporotrichosis, a rare disseminated infection caused by Sporothrix schenckii with numerous yeast cells in the scrotum; (viii) angiostrongyliasis, the first and only infection caused by Angiostrongylus costaricensis acquired in either Puerto Rico or the United States; and (ix) botryomycosis of the skin and subcutaneous tissue, caused by gram-positive cocci with an unusually large number of granules. Images PMID:8457979

  10. Unusual presentation of sand aspiration in a 14-mo-old child.

    PubMed

    Arun Babu, Thirunavukkarasu; Ananthakrishnan, Shanthi

    2013-09-01

    Accidental sand aspiration is an unusual but potentially life-threatening condition in children. Sand aspiration often occurs in cases of near drowning and accidental burial in sand. The authors report a case of accidental sand aspiration in a 14-mo-old girl while she was playing with sand. Though child was symptomatic and chest radiograph was showing obstructive emphysema initially, there was spontaneous resolution of radiographic findings and clinical condition within 48 h. Child was treated conservatively and was discharged. Follow up examination after 2 mo revealed persistent wheeze but no respiratory distress. Computed tomography (CT) of thorax was done which revealed a small sand particle measuring 0.2 0.4 0.3 cm in left main bronchus and was removed via rigid bronchoscopy. This report underscores the importance of performing bronchoscopy in all cases of suspected foreign body aspirations. PMID:23212394

  11. Unusual aspects of atrial myxoma.

    PubMed Central

    Crawford, F A; Selby, J H; Watson, D; Joransen, J

    1978-01-01

    Cardiac myxomas are infrequently encountered lesions. Certain aspects of these tumors are unusual and include right atrial location, calcification, valve destruction, hematologic abnormalities, occurrence in children, and familial occurrence. A 12-year-old girl manifesting all of these unusual aspects of myxoma is described and each of the unusual aspects is discussed. Images Figs. 1a and b. Figs. 2a and b. Fig. 3. PMID:686891

  12. Cancer/testis (CT) antigens, carcinogenesis and spermatogenesis

    PubMed Central

    2011-01-01

    During spermatogenesis, spermatogonial stem cells, undifferentiated and differentiated spermatogonia, spermatocytes, spermatids and spermatozoa all express specific antigens, yet the functions of many of these antigens remain unexplored. Studies in the past three decades have shown that many of these transiently expressed genes in developing germ cells are proto-oncogenes and oncogenes, which are expressed only in the testis and various types of cancers in humans and rodents. As such, these antigens are designated cancer/testis antigens (CT antigens). Since the early 1980s, about 70 families of CT antigens have been identified with over 140 members are known to date. Due to their restricted expression in the testis and in various tumors in humans, they have been used as the target of immunotherapy. Multiple clinical trials at different phases are now being conducted with some promising results. Interestingly, in a significant number of cancer patients, antibodies against some of these CT antigens were detected in their sera. However, antibodies against these CT antigens in humans under normal physiological conditions have yet to be reported even though many of these antigens are residing outside of the blood-testis barrier (BTB), such as in the basal compartment of the seminiferous epithelium and in the stem cell niche in the testis. In this review, we summarize latest findings in the field regarding several selected CT antigens which may be intimately related to spermatogenesis due to their unusual restricted expression during different discrete events of spermatogenesis, such as cell cycle progression, meiosis and spermiogenesis. This information should be helpful to investigators in the field to study the roles of these oncogenes in spermatogenesis. PMID:22319669

  13. Extracolonic Findings on Computed Tomography (CT) Colonography

    ClinicalTrials.gov

    2013-01-25

    Solitary Pulmonary Nodules; Multiple Pulmonary Nodules; Renal Neoplasms; Adrenal Gland Neoplasms; Aortic Aneurysm, Abdominal; Liver Neoplasms; Adnexal and Skin Appendage Neoplasms; Lymphadenopathy; Pancreatic Neoplasms

  14. Unusual ISS Rate Signature

    NASA Technical Reports Server (NTRS)

    Laible, Michael R.

    2011-01-01

    On November 23, 2011 International Space Station Guidance, Navigation, and Control reported unusual pitch rate disturbance. These disturbances were an order of magnitude greater than nominal rates. The Loads and Dynamics team was asked to review and analyze current accelerometer data to investigate this disturbance. This paper will cover the investigation process under taken by the Loads and Dynamics group. It will detail the accelerometers used and analysis performed. The analysis included performing Frequency Fourier Transform of the data to identify the mode of interest. This frequency data is then reviewed with modal analysis of the ISS system model. Once this analysis is complete and the disturbance quantified, a forcing function was produced to replicate the disturbance. This allows the Loads and Dynamics team to report the load limit values for the 100's of interfaces on the ISS.

  15. CT of abdominal tuberculosis

    SciTech Connect

    Epstein, B.M.; Mann, J.H.

    1982-11-01

    Intraabdominal tuberculosis (TB) presents with a wide variety of clinical and radiologic features. Besides the reported computed tomographic (CT) finding of high-density ascites in tuberculous peritonitis, this report describes additional CT features highly suggestive of abdominal tuberculosis in eight cases: (1) irregular soft-tissue densities in the omental area; (2) low-density masses surrounded by thick solid rims; (3) a disorganized appearance of soft-tissue densities, fluid, and bowel loops forming a poorly defined mass; (4) low-density lymph nodes with a multilocular appearance after intravenous contrast administration; and (5) possibly high-density ascites. The differential diagnosis of these features include lymphoma, various forms of peritonitis, peritoneal carcinomatosis, and peritoneal mesothelioma. It is important that the CT features of intraabdominal tuberculosis be recognized in order that laparotomy be avoided and less invasive procedures (e.g., laparoscopy, biopsy, or a trial of antituberculous therapy) be instituted.

  16. Unusual! Unbelievable! Unreal! (Children's Books).

    ERIC Educational Resources Information Center

    McKinley, Carol; Peters, Donna; Semer, Susie; White, W. Quinn; Scharer, Patricia L.

    1998-01-01

    Presents brief annotations of 48 illustrated children's books that enable readers to explore the unusual, unbelievable, or unreal. Presents the books in the following grouping: unbelievable characters; coping with adversity; incredible accomplishments; unreal tales from real places; unusual plants and animals; unreal phenomena; and…

  17. Anorectal giant condyloma acuminatum (Buschke-Loewenstein tumor): CT and radiographic manifestations

    SciTech Connect

    Balthazar, E.J.; Streiter, M.; Megibow, A.J.

    1984-03-01

    Giant condyloma acuminatum (Buschke-Loewenstein tumor) is an unusual variety of venereal wart characterized by a large size, cauliflower-like appearance, and locally invasive nature. CT examination of two patients with anorectal giant condylomata revealed the papillomatous and invasive nature of the lesion and the extent of tumor; there was infiltration of the subcutaneous tissue, perirectal fascial planes, and luminal narrowing with marked thickening of the rectal wall. The pathologic specimens showed benign histologic finding in one case and a mixed pattern with areas of malignant degeneration in the other. CT accurately demonstrated the exact location and extent of the lesions. The presence of malignant degeneration in this inherently invasive lesion can be established only on histologic examination.

  18. Serum albumins - unusual allergens

    PubMed Central

    Chruszcz, Maksymilian; Mikolajczak, Katarzyna; Mank, Nicholas; Majorek, Karolina A.; Porebski, Przemyslaw J.; Minor, Wladek

    2015-01-01

    Background Albumins are multifunctional proteins present in the blood serum of animals. They can bind and transport a wide variety of ligands which they accommodate due to their conformational flexibility. Serum albumins are highly conserved both in amino acid sequence and three-dimensional structure. Several mammalian and avian serum albumins (SAs) are also allergens. Sensitization to one of the SAs coupled with the high degree of conservation between SAs may result in cross-reactive antibodies in allergic individuals. Sensitivity to SA generally begins with exposure to an aeroallergen, which can then lead to cross-sensitization to serum albumins present in food. Scope of Review This review focuses on the allergenicity of SAs presented in a structural context. Major Conclusions SA allergenicity is unusual taking into account the high sequence identity and similarity between SA from different species and human serum albumin. Cross-reactivity of human antibodies towards different SAs is one of the most important characteristics of these allergens. General Significance Establishing a relationship between sequence and structure of different SAs and their interactions with antibodies is crucial for understanding the mechanisms of cross-sensitization of atopic individuals. Structural information can also lead to better design and production of recombinant SAs to replace natural proteins in allergy testing and desensitization. Therefore, structural analyses are important for diagnostic and treatment purposes. PMID:23811341

  19. An unusual case of incaprettamento.

    PubMed

    Focardi, Martina; Pinchi, Vilma; Defraia, Beatrice; Norelli, Gian-Aristide

    2014-06-01

    Incaprettamento is a ritual strangulation that represents a method of homicide typical of the Italian Mafia. While the victim is in the prone position, he/she is bound by one end of a rope, creating a slipknot around the throat, while the other end is used to tie the limbs behind the back. Forensic investigations reveal that in most cases, the binding of the extremities and the positioning of the victim are carried out after death due to others means and are intended to hold somebody in contempt and to punish betrayers. When the victim is tied while alive, the death is caused by self-strangulation because it is impossible to maintain the legs in this forced position. Here, we describe in detail a case with a lot of similarities to incaprettamento, although we define it as atypical because of the unusual methods of the actual binding and the circumstances in which death occurred. In fact, the investigation of the crime scene, the external and internal findings, and the histologic examination result show that this is a crime of passion. PMID:24457582

  20. Lumbosacral spine CT

    MedlinePLUS

    Spinal CT; CT - lumbosacral spine ... In other cases, a CT of the lumbosacral spine may be done after injecting contrast dye into ... of the body. A CT of the lumbosacral spine can evaluate fractures and changes of the spine, ...

  1. An unusual finding in a body recovered from the sea.

    PubMed

    Colombage, Senarath M; Telisinghe, P U

    2010-07-01

    Post-mortem injuries caused by terrestrial and aquatic animals are commonly encountered in forensic practice. We present a case where an autopsy of a body recovered from the sea showed post-mortem injuries and numerous crustaceans in the heart and lungs. They have gained access to these organs via oro-nasal route and subsequent penetration through mediastinal soft tissues and migration down the trachea. PMID:20569960

  2. Experiments with Unusual Oxidation States

    ERIC Educational Resources Information Center

    Kauffman, G. B.

    1975-01-01

    Describes four synthesis experiments, adapted for the general chemistry laboratory, in which compounds in unusual oxidation are prepared. The abnormal oxidation states involved in the synthesis products are: silver (II), chromium (II), lead (IV), and bromine (I). (MLH)

  3. CT Scans

    Cancer.gov

    An arm or chest radiograph looks all the way through a body without being able to tell how deep anything is. A CT scan is three-dimensional. By imaging and looking at several three-dimensional slices of a body (like slices of bread) a doctor could not only tell if a tumor is present, but roughly how deep it is in the body.

  4. Atypical distribution of small nodules on high resolution CT studies: patterns and differentials.

    PubMed

    Marchiori, Edson; Zanetti, Glucia; Barreto, Miriam Menna; de Andrade, Flvio Teixeira Azeredo; Rodrigues, Rosana Souza

    2011-09-01

    Accurate diagnosis of lung disease with high resolution CT is challenging and relies on a pattern-based approach coupled with knowledge of the distribution of the abnormalities in the lung parenchyma. Some findings and distributions of small nodules are specific for certain diseases, but atypical patterns have been described, especially for granulomatous diseases such as sarcoidosis and tuberculosis. Unusual HRCT aspects that involve the coalescence of small nodules have been termed the "sarcoid galaxy sign" and the "sarcoid cluster sign". Other imaging findings such as the "reversed halo sign" and the "fairy ring sign" can also be composed of small nodules. The aim of this review was to describe and illustrate a range of conditions that manifest with atypical distribution of small nodules on HRCT. We discuss the various aspects, associated findings, and differential diagnosis particularly in sarcoidosis and tuberculosis. PMID:21377343

  5. CT of congenital malformations of the lung.

    PubMed

    Mata, J M; Cceres, J; Lucaya, J; Garca-Conesa, J A

    1990-07-01

    We reviewed 40 cases of congenital malformations of the lung that were studied with both plain radiography and computed tomography (CT). We compared the CT findings with those of radiography. We found that CT was helpful in the management of these cases because it helped confirm the diagnosis, demonstrated unsuspected findings, and better depicted anatomic extent of anomalies, thus allowing better planning for surgery. We believe that CT is the method of choice for the study of congenital lung malformations and that it should be used before more invasive procedures such as bronchography or aortography. PMID:2377765

  6. Mastocytosis: unusual manifestation; clinical and radiologic changes.

    PubMed Central

    Gagnon, J. H.; Kalz, F.; Kadri, A. M.; Graefe, I. V.

    1975-01-01

    Two patients with mast cell disease presented with unusual features. In one the absence of skin lesions made the diagnositic problem a challenging one. Certain of the laboratory findings, especially those related to the serum cholesterol concentration and platelet function tests, were particularyl interesting. Chemotherapy induced partial remission. The second patient had a long, relatively benign course complicated by two episodes of herpes zoster, the last being associated with the Landry-Guillain-Barre syndrome. In both patients the skeletal abnormalities were radiologically similar. When these are present they should be considereed sufficiently characteristic to indicate strongly a diagnosis of mastocytosis. Images FIG. 1 FIG. 2 FIG. 3 FIG. 4 PMID:804988

  7. Adenoid cystic carcinoma: An unusual presentation

    PubMed Central

    Pushpanjali, M; Sujata, D Naga; Subramanyam, S Bala; Jyothsna, M

    2014-01-01

    The adenoid cystic carcinoma is a relatively rare epithelial tumor of the major and minor salivary glands, accounting for about 1% of all malignant tumor of the oral and maxillofacial regions. Peak incidence occurs between the 5th and 6th decades of life. The clinical and pathological findings typical of this tumor include slow growth, peri-neural invasion, multiple local recurrences and distant metastasis. Herein, we report a case of adenoid cystic carcinoma of oropharynx with unusual clinical presentation. The diagnosis of this case and importance of cytology in diagnosing such cases is discussed. PMID:25328314

  8. [Unusual suicide by mechanical neck compression].

    PubMed

    Hartwig, Sven

    2008-01-01

    A 36-year-old man was found dead with his neck being jammed between the hydraulic tail lift and the side wall of a truck. Based on the investigations, the technical facilities of the tail lift, the results of the postmortem examination and the autopsy it could be demonstrated that the victim, who suffered drom depression, had intentionally brought himself into this position and committed suicide by compression of the neck. The pathomorphological findings and the technical reconstruction of this unusual death are presented. PMID:18389864

  9. An unusual presentation of macular amyloidosis.

    PubMed

    Melo, Brbara Lima Arajo; Costa, Igor Santos; Goes, Clara de Assis Martins; Tigre, Celina Aguiar Frota; Andr, Nara Frota

    2011-01-01

    Macular amyloidosis is a form of cutaneous amyloidosis characterized by dusky-brown lesions usually located on the upper back between the shoulder blades. This report describes the case of a 45 year-old female presenting with hyperpigmented macules and lace-like, non-pruritic erythema in the sacral and cervical region as well as on both arms and legs. Histology revealed amyloid deposits in the papillary dermis which exhibited apple-green birefringence after Congo red staining. There were no systemic findings. This is a case of macular amyloidosis with an unusual presentation. The literature on the subject is also reviewed. PMID:22068763

  10. An Unusual Exponential Graph

    ERIC Educational Resources Information Center

    Syed, M. Qasim; Lovatt, Ian

    2014-01-01

    This paper is an addition to the series of papers on the exponential function begun by Albert Bartlett. In particular, we ask how the graph of the exponential function y = e[superscript -t/t] would appear if y were plotted versus ln t rather than the normal practice of plotting ln y versus t. In answering this question, we find a new way to…

  11. [An unusual ascites...].

    PubMed

    Miéville, A; Maillard Dewarrat, G; Bauer, J

    2011-05-25

    The finding of an ascites in in- or out-patients in inner medicine is relatively frequent. However, the differential diagnosis sometimes extends in rarer pathologies which need rapid investigations to begin a treatment and improve the patient's prognosis. We present the case of a 50-year-old patient with a progressive ascites in the context of a peritoneal carcinosis due to a malignant peritoneal mesothelioma. PMID:21614766

  12. An Unusual Exponential Graph

    ERIC Educational Resources Information Center

    Syed, M. Qasim; Lovatt, Ian

    2014-01-01

    This paper is an addition to the series of papers on the exponential function begun by Albert Bartlett. In particular, we ask how the graph of the exponential function y = e[superscript -t/t] would appear if y were plotted versus ln t rather than the normal practice of plotting ln y versus t. In answering this question, we find a new way to

  13. CT in aortic trauma

    SciTech Connect

    Heiberg, E.; Wolverson, M.K.; Sundaram, M.; Shields, J.B.

    1983-06-01

    A diagnosis of aortic transection was made at computed tomography (CT) in four of 10 patients with acute multiple trauma suspected of having thoracic aortic injuries. There were no false-negative or false-positive examinations. The CT findings of an injured aorta were (1) false aneurysm, (2) linear lucency within the opacified aortic lumen caused by the torn edge of the aortic wall, (3) marginal irregularity of the opacified aortic lumen, (4) periaortic or intramural aortic hematoma, and (5) dissection. The extent of associated mediastinal hemorrhage and the amount of blood in the pleural space were not useful as indicators of aortic injury. Similarly, shift of the trachea and esophagus or absence thereof was found in patients with or without aortic tear.

  14. Unusual fibularis (peroneus) muscle.

    PubMed

    Fabrizio, Philip A

    2015-10-01

    Routine dissection has identified a previously unrecorded fibularis (peroneus) muscle in a 74-year-old male cadaver. The anomalous fibularis muscle was found lying immediately antero-medial to the fibularis longus (FL) muscle of the left leg. The anomalous muscle arose from the muscle belly of the FL in the proximal 1/2 of the leg. The muscle belly gave way to a long slender tendon that continued distally behind the lateral malleolus and inserted onto the superficial aspect of the inferior fibular retinaculum. The current finding and clinical significance are discussed. PMID:25431295

  15. An Unusual Case of Gastroschisis

    PubMed Central

    Sheikh, Afzal

    2010-01-01

    Gastroschisis is an abdominal wall defect through which intestine and rarely other organs eviscerate. It is less frequently associated with anorectal malformations. Abnormal size and shape of the defect is rarely identified in these patients. We report a case of gastroschisis with an unusual abdominal wall defect, imperforate anus and an ectopically placed vestibule. The defect was extended from right side of umbilicus to the perineum. There was evisceration of entire gastrointestinal tract (GIT), liver, gallbladder and urinary bladder. The defect was not manageable with a spring loaded silo and a sterilized blood bag was used to cover the defect. The unusual defect, associated anomalies and evisceration of unusual viscera are the main reasons for reporting the index case. PMID:22953245

  16. Computed Tomographic Findings of Syphilitic Aortitis: A Case Report

    SciTech Connect

    Kimura, Fumiko; Satoh, Hideyuki; Sakai, Fumikazu; Nishii, Noriko; Tohda, Joe; Fujimura, Mikihiko; Haruta, Shoji; Yamazaki, Kenji; Endo, Masahiro; Sakomura, Yasunari; Kurosama, Hiromi; Kasanuki, Hiroshi

    2004-03-15

    We describe the computerized tomographic (CT) findings of the aortic wall in a case of acute-phase syphilitic arteritis. The delayed phase of the contrast-enhanced CT shows a double-ring configuration of the thick thoracic aortic wall, which is similar to CT findings previously reported for Takayasu arteritis. We speculate that the resemblance of the CT findings for these two diseases accounts for their similar histopathological features.

  17. CT of malignant pleural mesothelioma

    SciTech Connect

    Alexander, E.; Clark, R.A.; Colley, D.P.; Mitchell, S.E.

    1981-08-01

    Malignant pleural mesothelioma is a rare tumor. Although the chest film findings of pleural mesothelioma are well described, there are few descriptions of the findings of computed tomography (CT). This report describes the CT findings in five cases of pleural mesothelioma. In each case the CT showed an extensive, irregular, pleural-based mass surrounding the lung, spreading into the fissures, and extending into the mediastinum. In two cases there was also extension into the contralateral chest, and in one case each there was extension into the abdomen and chest wall. In each case the chest radiographs underestimated the extent of disease, when compared to CT. When an irregular, pleural-based mass involving most of the hemithorax is identified on CT, the diagnosis of mesothelioma can be suggested and at the same time the extent of the tumor may be evaluated. This is important because the diagnosis of mesothelioma is difficult and because treatment and prognosis may depend on the extent of the disease.

  18. [Papillary thyroid carcinoma synchronous with breast cancer: an incidental finding in an (18)F-FDG PET-CT study carried out in a search for occult breast cancer].

    PubMed

    Banzo, J; Ubieto, M A; Gonzlez, C; Razola, P; Tardn, L; Andrs, A; Santapau, A; Parra, A; Rambalde, E F; Prats, E

    2012-01-01

    The most common cause of metastatic involvement of axillary lymph nodes in women is ipsilateral breast cancer. The definition of occult breast malignancy has changed over time. Nowadays, it is considered to exist when it coincides with an isolated metastatic axillary abnormal lymph node in the absence of a palpable tumor in the ipsilateral breast, non-diagnostic breast tumor mammography and no detection of other malignancies outside the breast which could potentially affect the axillary nodes. The value of (18)F-FDG PET/CT scan in these patients has not been established, but it could be useful in those patients with a non-diagnostic MRI. It is not uncommon in (18)F-FDG PET/CT studies to identify incidental hypermetabolic focal image in the thyroid. The high prevalence of cancer in these lesions makes it recommendable to perform a US study and/or FNAP biopsy. PMID:23067689

  19. Antrochoanal polyp of unusual size.

    PubMed

    Zivi?, Ljubica; Jovanovi?, Danijela; Stojanovi?, Stevan

    2013-02-01

    This paper presents antrochoanal polyp of unusually large size (8x5 cm), which we removed in a 34-year old patient by the antral portion by the Caldwell-Luc approach and the portion form the epipharynx through the oral cavity with skew pliers for the pharynx biopsy. PMID:23348191

  20. Unusual manifestations of osteoarticular tuberculosis.

    PubMed

    Babhulkar, Sudhir S; Pande, Sonali K

    2002-05-01

    Unusual manifestations of osteoarticular tuberculosis, especially tubercular osteomyelitis, are described. Diagnostic problems may arise and lead to delay in treatment if these conditions are not considered in the differential diagnosis. The importance of bacteriologic and histopathologic confirmation of the disease is stressed. PMID:11964639

  1. CT imaging of colitis.

    PubMed

    Thoeni, Ruedi F; Cello, John P

    2006-09-01

    Computed tomography (CT) is widely used to assess patients with nonspecific abdominal pain or who are suspected of having colitis. The authors recommend multidetector CT with oral, rectal, and intravenous contrast material and thin sections, which can accurately demonstrate inflammatory changes in the colonic wall and help assess the extent of disease. In most cases, the final diagnosis of the type of colitis is based on clinical and laboratory data and colonoscopic and biopsy findings, but specific CT features help narrow the differential diagnosis. Ulcerative colitis is distinguished from granulomatous colitis (Crohn disease) in terms of location of involvement, extent and appearance of colonic wall thickening, and type of complications. Ulcerative colitis and Crohn disease (granulomatous colitis) are rarely associated with ascites, which is often seen in infectious, ischemic, and pseudomembranous colitis. Pseudomembranous colitis also demonstrates marked wall thickening and, occasionally, skip areas but is associated with broad-spectrum antibiotic treatment or chemotherapy. Neutropenic colitis is characterized by right-sided colonic and ileal involvement, whereas ischemic colitis is characterized by vascular distribution pattern and history. Diverticulitis is a focal asymmetric process with fascial thickening and inflamed diverticula. Dilatation of a thick-walled appendix with increased enhancement and adjacent stranding suggests appendicitis, but inflammatory changes may extend to the cecum and terminal ileum. Epiploic appendagitis is a focal rim-enhancing area next to the colon, usually without any substantial colonic wall thickening. PMID:16926320

  2. CT of abdominal tuberculosis.

    PubMed

    Epstein, B M; Mann, J H

    1982-11-01

    Intraabdominal tuberculosis (TB) presents with a wide variety of clinical and radiologic features. Besides the reported computed tomographic (CT) finding of high-density ascites in tuberculous peritonitis, this report describes additional CT features highly suggestive of abdominal tuberculosis in eight cases: (1)irregular soft-tissue densities in the omental area; (2) low-density masses surrounded by thick solid rims; (3) a disorganized appearance of soft-tissue densities, fluid, and bowel loops forming a disorganized appearance of soft-tissue densities, fluid, and bowel loops forming a poorly defined mass; (4) low-density lymph nodes with a multilocular appearance after intravenous contrast administration; and (5) possibly high-density ascites. The differential diagnosis of these features include lymphoma, various forms of peritonitis, peritoneal carcinomatosis, and peritoneal mesothelioma. It is important that the CT features of intraabdominal tuberculosis be recognized in order that laparotomy be avoided and less invasive procedures (e.g., laparoscopy, biopsy, or a trail of antituberculous therapy) be instituted. PMID:6981966

  3. An Unusual Case of Bilateral Granulomatous Mastitis

    PubMed Central

    Pistolese, C. A.; Di Trapano, R.; Girardi, V.; Costanzo, E.; Di Poce, I.; Simonetti, G.

    2013-01-01

    Idiopathic granulomatous mastitis (IGM) is an uncommon benign disorder of the breast. At clinical examination, IGM is characterized by an inflammatory process of the breast, usually unilateral. Possible clinical findings are palpable mass with erythematous skin, pain, sterile abscesses, fistula and nipple retraction. Mammography and ultrasound findings are not specific for IGM. Magnetic resonance imaging (MRI) is a useful tool for the differential diagnosis; it is also necessary to delineate the exact extension of the disease and to plan the correct treatment. Final diagnosis is histological. We described an unusual case of IGM with bilateral involvement in a patient with history of pacemaker implantation and IGM typical clinical symptoms. Mammography, ultrasound, and MRI examinations were performed to identify the inflammatory disorder and to plan the correct therapy. Imaging features were correlated with final histological diagnosis of IGM. PMID:23781373

  4. CT demonstration of bilateral adrenal hemorrhage

    SciTech Connect

    Ling, D.; Korobkin, M.; Silverman, P.M.; Dunnick, N.R.

    1983-08-01

    Bilateral adrenal hemorrhage with subsequent adrenal insufficiency is a recognized complication of anticoagulant therapy. Because the clinical manifestations are often nonspecific, the antemortem diagnosis of adrenal hemorrhage has been a difficult clinical problem. Computed tomography (CT) provides detailed images of the adrenal glands that are not possible with conventional imaging methods. The CT findings of bilateral adrenal hemorrhage in an anticoagulated patient are reported.

  5. Malignant external otitis: CT evaluation

    SciTech Connect

    Curtin, H.D.; Wolfe, P.; May, M.

    1982-11-01

    Malignant external otitis is an aggressive infection caused by Pseudomonas aeruginosa that most often occurs in elderly diabetics. Malignant external otitis often spreads inferiorly from the external canal to involve the subtemporal area and progresses medially towards the petrous apex leading to multiple cranial nerve palsies. The computed tomographic (CT) findings in malignant external otitis include obliteration of the normal fat planes in the subtemporal area as well as patchy destruction of the bony cortex of the mastoid. The point of exit of the various cranial nerves can be identified on CT scans, and the extent of the inflammatory mass correlates well with the clinical findings. Four cases of malignant external otitis are presented. In each case CT provided a good demonstration of involvement of the soft tissues at the base of the skull.

  6. Intracranial vascular malformations: MR and CT imaging

    SciTech Connect

    Kucharczyk, W.; Lemme-Pleghos, L.; Uske, A.; Brant-Zawadzki, M.; Dooms, G.; Norman, D.

    1985-08-01

    Twenty-four patients with 29 cerebrovascular malformations were evaluated with a combination of computed tomography (CT), angiography, and magnetic resonance (MR) imaging. Characteristics of the malformations on MR images were reviewed retrospectively, and a comparative evaluation of MR and CT images was made. Of 14 angiographically evident malformations, 13 intra-axial lesions were detected on both CT and MR images, and one dural malformation gave false-negative results on both modalities. The appearance of parenchymal lesions on MR images closely mirrored characteristic CT findings. Angiographically evident malformations have a highly characteristic appearance on MR images. MR may be more sensitive than CT in the detection of small hemorrhagic foci associated with cryptic arteriovenous malformations and may add specificity in the diagnosis of occult malformations in some cases, but MR is less sensitive than CT for the detection of small calcified malformations.

  7. Unidentified phenomena - Unusual plasma behavior?

    NASA Astrophysics Data System (ADS)

    Avakian, S. V.; Kovalenok, V. V.

    1992-06-01

    The paper describes observations of a phenomenon belonging to the UFO category and the possible causes of these events. Special attention is given to an event which occurred during the night of September 19-20, 1974, when a huge 'star' was observed over Pertrozavodsk (Russia), consisting of a bright-white luminous center, emitting beams of light, and a less bright light-blue shell. The star gradually formed a cometlike object with a tail consisting of beams of light and started to descend. It is suggested that this event was related to cosmic disturbances caused by an occurrence of unusually strong solar flares. Other examples are presented that relate unusual phenomena observed in space to the occurrence of strong magnetic turbulence events.

  8. Unusual ligand coordination for cesium

    SciTech Connect

    Bryan, J.C.; Kavallieratos, K.; Sachleben, R.A.

    2000-04-03

    When complexed by tetrabenzo-24-crown-8, the cesium ion can accommodate unprecedented ligation. The structures of the complexes are presented. These structures are the first reported examples of linear {eta}{sup 2}-acetonitrile coordination to any metal ion and the first structures illustrating {eta}{sup 2}-acetonitrile and dichloromethane ligation to an alkali metal ion. Possible steric and electronic origins of these unusual metal-ligand interactions are discussed.

  9. Syringocystadenoma Papilliferum: An Unusual Presentation

    PubMed Central

    Kumar, Parbodh; Varshney, Rahul

    2014-01-01

    Syringocystadenoma papilliferum is a benign hamartomatous adnexal tumour. Most of the patients present with solitary lesions in the head and neck region at birth or in early childhood. Multiple lesions are rarely seen and those which arise outside the head and neck region are even more uncommon. A case of syringocystadenoma papilliferum with multiple verrucous lesions and which was located in the right flank, an unusual site, has been presented. PMID:24995228

  10. CT -- Body

    MedlinePLUS

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  11. CT Enterography

    MedlinePLUS

    ... This page was reviewed on March 16, 2016 Send us your feedback Did you find the information ... to this site. × Recommend RadiologyInfo to a friend Send to (friend's e-mail address): From (your name): ...

  12. CT scanning of the heart

    SciTech Connect

    Lipton, M.J.; Brundage, B.H.; Higgins, C.B.; Boyd, D.P.

    1983-01-01

    It is generally agreed that all present diagnostic cardiac methods including echocardiography, nuclear medicine, and coronary arteriography have significant limitations. Nuclear cardiology provides excellent diagnostic sensitivity using small amounts of radioactive tracers, but it currently lacks the spatial fidelity needed to differentiate many anatomic structures in the heart. CT complements the capabilities of these alternative imaging modalities. Computed tomography offers accurate reconstruction of the whole myocardium with far greater spatial and density resolution in three dimensions. CT may eventually find its most important and clinically useful application in the diagnosis and management of heart disease.

  13. Imaging Findings of Gastric Diverticula

    PubMed Central

    Schramm, Dominik; Bach, Andreas Gunter; Zipprich, Alexander; Surov, Alexey

    2014-01-01

    Introduction. Gastric diverticula (GD) are very rare. Computer tomographic findings in GD have been reported only as case reports previously. The aim of this study was to estimate the prevalence of GD on computed tomography (CT) and to analyze their radiological appearances. Materials and Methods. From 2006 to 2013, a total of 14,428 patients were examined by abdominal/thoracic CT at our institution. GD were diagnosed in 18 (0.12%) patients (13 women and 5 men, median age, 64 years). In 9 patients, additional endoscopy and in 7 patients upper gastrointestinal investigation with contrast medium were performed. Magnetic resonance imaging (MRI) was available for 3 cases. Results. In all patients GD were diagnosed incidentally during CT examination. The diverticula were located at the posterior wall of the gastric fundus below the esophagogastric junction. On CT, GD presented as cystic lesions with a thin wall and an air fluid level, located behind the stomach between spleen, adrenal gland, and crus of the left diaphragm. Conclusion. The prevalence of GD encountered in our CT series is 0.12%. GD demonstrate typical CT appearances, namely, cystic lesions located in the left paravertebral region. The radiologist should be familiar with this finding to avoid possible misinterpretations. PMID:25401160

  14. Large-cell lymphoma of the spleen: CT appearance

    SciTech Connect

    Meyer, J.E.; Harris, N.L.; Elman, A.; Stomper, P.C.

    1983-07-01

    CT and histopathological findings were correlated in 5 patients with large-cell lymphoma who presented with splenic enlargement. Prominent CT findings included splenomegaly with large solitary or multiple areas of low attenuation. The clinical presentation and operative findings are reviewed.

  15. Computed tomographic findings of Bellini duct carcinoma of the kidney

    SciTech Connect

    Fukuya, Tatsuro; Honda, Hiroshi; Kaneko, Kuniyuki

    1996-05-01

    To analyze CT findings of Bellini duct carcinoma, a rare variant of renal cell carcinoma. The CT findings of five cases of Bellini duct carcinoma were reviewed and the findings were recorded. In all cases the affected kidneys maintained the normal outer contours. In four cases the renal masses protruded into the central sinuses. Contrast enhancement was minimal in four cases. Bellini duct carcinoma should be suspected in cases with these CT findings. 17 refs., 5 figs., 1 tab.

  16. Dural tear of unusual cause

    PubMed Central

    Kechna, Hicham; Loutid, Jaouad; Ouzzad, Omar; Hanafi, Sidi Mohamed; Hachimi, Moulay Ahmed

    2015-01-01

    Epidural analgesia is highly recommended in cancer anorectal surgery. In addition to the fight against pain it provides some benefit in allowing early rehabilitation of patients. One of the risks of this practice is the dural tear creating a cerebrospinal fluid leak (CSF) in the epidural space (EPD). Clinical features the typical positional headache, a procession of various more or less severe symptoms: nausea, vomiting, dizziness, visual or hearing impairment or radicular pain. We report a dural of unusual cause secondary of the obstruction of tuohy catheter by vertebral cartilage. PMID:26113920

  17. Viruses, Immunity and Unusual Lymphoproliferative Disorders of the Chest: Integrating Imaging With Pathogenesis and Clinical Presentations.

    PubMed

    Law, Amy; Shmukler, Anna; Burns, Judah; Haramati, Linda Broyde

    2016-01-01

    Unusual lymphoproliferative diseases result from the stimulation of intrathoracic lymphoid tissue by viruses and immune dysfunction, ranging from benign hyperplasia to malignant transformation. We review the clinical, radiological, and histopathological findings of unusual lymphoproliferative disorders, which have been linked to viruses or immune dysfunction, focusing on thoracic manifestations. Understanding these advances in science enhances the radiologist's skills in integrating the imaging findings to the clinical scenario to suggest the correct diagnosis. PMID:26484956

  18. Computed tomographic findings in penetrating peptic ulcer

    SciTech Connect

    Madrazo, B.L.; Halpert, R.D.; Sandler, M.A.; Pearlberg, J.L.

    1984-12-01

    Four cases of peptic ulcer penetrating the head of the pancreas were diagnosed by computed tomography (CT). Findings common to 3 cases included (a) an ulcer crater, (b) a sinus tract, and (c) enlargement of the head of the pancreas. Unlike other modalities, the inherent spatial resolution of CT allows a convenient diagnosis of this important complication of peptic ulcer disease.

  19. The scientific study of unusual rapid wound healing: a case report.

    PubMed

    Hall, H; Don, N S; Hussein, J N; White, E; Hostoffer, R

    2001-01-01

    This paper examines in a Western medical setting the claim made by a Middle Eastern school of Sufism that its members can attain unusually rapid wound healing from deliberately caused bodily damage. The demonstration involved a Sufi practitioner inserting an unsterilized metal skewer through one side of the cheek area of the face (lateral buccal) and out through the other side. The insertion was observed by Western scientists. The left facial puncture healed within 2 minutes; the right facial puncture was three-quarters healed after 8 hours. According to the practitioner, the piercing was not associated with subjective pain. Radiological, immunological, and electroencephalograph (EEG) recordings were taken before and after the insertion. A random event generator (REG) was also run during the demonstration. Radiological and axial CT images documented the presence of the metal skewer through the cheeks. EEG findings were inconclusive. Immunological recordings showed no alterations. There was a trend toward REG non-randomness and, therefore, negentropy or increased complexity and order, which may be associated with the re-establishment of tissue integrity. Such rapid wound healing has therapeutic implications for new treatments of serious medical and pain-related problems as well as implications for the study of "paranormal" healing phenomena. PMID:11572849

  20. Preoperative evaluation of colorectal cancer using CT colonography, MRI, and PET/CT

    PubMed Central

    Kijima, Shigeyoshi; Sasaki, Takahiro; Nagata, Koichi; Utano, Kenichi; Lefor, Alan T; Sugimoto, Hideharu

    2014-01-01

    Imaging studies are a major component in the evaluation of patients for the screening, staging and surveillance of colorectal cancer. This review presents commonly encountered findings in the diagnosis and staging of patients with colorectal cancer using computed tomography (CT) colonography, magnetic resonance imaging (MRI), and positron emission tomography (PET)/CT colonography. CT colonography provides important information for the preoperative assessment of T staging. Wall deformities are associated with muscular or subserosal invasion. Lymph node metastases from colorectal cancer often present with calcifications. CT is superior to detect calcified metastases. Three-dimensional CT to image the vascular anatomy facilitates laparoscopic surgery. T staging of rectal cancer by MRI is an established modality because MRI can diagnose rectal wall laminar structure. N staging in patients with colorectal cancer is still challenging using any imaging modality. MRI is more accurate than CT for the evaluation of liver metastases. PET/CT colonography is valuable in the evaluation of extra-colonic and hepatic disease. PET/CT colonography is useful for obstructing colorectal cancers that cannot be traversed colonoscopically. PET/CT colonography is able to localize synchronous colon cancers proximal to the obstruction precisely. However, there is no definite evidence to support the routine clinical use of PET/CT colonography. PMID:25493009

  1. Unusual presentation of gallbladder perforation

    PubMed Central

    Jayasinghe, G.; Adam, J.; Abdul-Aal, Y.

    2015-01-01

    Introduction Gall bladder perforation is associated with high mortality rates and therefore must be recognised and managed promptly. We present an unusual presentation of spontaneous gall bladder perforation. Case presentation An elderly lady with multiple medical co-morbidities was admitted with sepsis following a fall. Initial assessment lead to a diagnosis of pneumonia, however a rapidly expanding right flank mass was incidentally noted during routine nursing care. Imaging studies were inconclusive, however incision and drainage of the mass revealed bile stained pus draining cutaneously from an acutely inflamed gallbladder. The patient made a good recovery following surgery, and was discharged with outpatient follow-up. Discussion Despite focussed post-hoc history taking she denied any prodromal symptoms of cholecystitis. In addition to reporting an unusual cause for a common presentation, we highlight the importance of a full body examination in the context of sepsis, regardless of whether the source has been identified. In addition, we advocate that surgical intervention in sepsis should not be delayed by imaging in cases where an abscess is suspected. Conclusions Percutaneous abscesses arising from the gallbladder are a rare but potentially serious consequence of acute cholecystitis, and may present in a wide variety of locations. Therefore it is imperative to conduct a full body inspection in the septic patient, even when a source has been identified. PMID:26686488

  2. Unusual lesions of the mediastinum

    PubMed Central

    Shamsuddin, Fatima; Khadilkar, Urmila N; Saha, Debarshi

    2015-01-01

    Objectives: To study unusual lesions in the mediastinum, which do not originate from the thymus, lymph nodes, neural tissues or germ cells, and tissues that normally engender pathologic lesions in the mediastinum. Materials and Methods: Of the 65 cases seen, 12 unusual lesion were encountered in a 5½ year period from 2006 to 2011. Results: Two cases of nodular colloid goiter and one each of the mediastinal cyst, undifferentiated carcinoma, and Langerhans cell histiocytosis (LCH) affected the anterosuperior mediastinum. In the middle mediastinum, one case each of the mesothelioma, malignant gastrointestinal stromal tumor (GIST), squamous cell carcinoma (SCC), solitary fibrous tumor (SFT), and pleomorphic sarcoma (PS) was seen. One case of meningeal melanocytoma (Mme) and primary pleural liposarcoma (PL) involved the posterior mediastinum. Persistent disease was seen in LCH after 2 years. Of all the cases with malignant lesions, only the patient with SCC was alive after 1 year. Conclusion: The cases of primary and SCC, LCH, melanocytoma, liposarcoma and PS, and GIST are unexpected and very rarely have paradigms in the mediastinum. Radiologic impression and knowledge of the compartment where these lesions arose from hardly assisted in arriving at a definitive opinion as the lesions were not typical of this location. A high index of suspicion and the immunohistochemical profile facilitated the final diagnosis. PMID:26664161

  3. Unusual uptake of radioiodine in a retroperitoneal bronchogenic cyst in a patient with thyroid carcinoma.

    PubMed

    Jiang, Xue; Zeng, Hao; Gong, Jing; Huang, Rui

    2015-05-01

    The incidence of retroperitoneal bronchial cyst is rare and is unusual to be visualized on I scan. We report a 52-year-old man who received I therapy for papillary thyroid cancer. The postablation whole-body scan revealed increased radioiodine activity in the left abdomen. SPECT/CT localized this activity from a soft tissue mass in the retroperitoneal space. A retroperitoneal tumor was considered, and retroperitoneal laparoscopic tumor resection was performed. Pathologic examination confirmed a retroperitoneal bronchogenic cyst. PMID:25546201

  4. An Unusual Case of Primary Spontaneous Tension Pneumothorax in a Jamaican Female

    PubMed Central

    Johnson, M; French, S; Cornwall, D

    2014-01-01

    Spontaneous pneumothorax is a well-recognized entity with a classical presentation of acute onset chest pain and shortness of breath. It may be complicated by the development of a tension pneumothorax or a haemopneumothorax. We report an interesting case of a spontaneous tension haemopneumothorax which presented atypically and was diagnosed on computed tomography (CT) scan of the chest. The clinical and pathophysiological characteristics and treatment of this unusual entity is discussed. PMID:25314288

  5. An unusual posterior mediastinal lipoblastoma with spinal epidural extension presenting as a painful suprascapular swelling: case report and a brief review of the literature.

    PubMed

    Raman Sharma, Rewati; Mahapatra, Ashok K; Pawar, Sanjay J; Sousa, Jesus; Musa, Mohammed M

    2002-03-01

    Lipoblastoma is a rare benign pediatric neoplasm of fetal-embryonal fat with little risk of recurrence following total microsurgical excision, but it may progress to local invasion or infiltration if not treated surgically. No adjuvant therapies are usually necessary once the tumor is excised. It is best diagnosed on histopathological studies following excision. An unusual posterior mediastinal lipoblastoma in a 2-year-old Omani girl with spinal epidural extension clinically manifested as a progressive painful suprascapular swelling is reported. It was initially construed to be a benign lipoma, but progressively increasing pain and mild imbalance whilst walking with a tendency to fall on the right side prompted neurosurgical referral and eventual total excision without any added morbidity. Interesting clinical and neuroimaging (CT & MRI) findings are presented and discussed, with a brief review of the literature. PMID:11922718

  6. Hepatic metastases studied with MR and CT

    SciTech Connect

    Heiken, J.P.; Lee, J.K.T.; Glazer, H.S.; Ling, D.

    1985-08-01

    Examinations of the liver using magnetic resonance (MR) and computed tomography (CT) were performed on 50 patients with hepatic metastases. MR and CT were comparable in their ability to detect metastases, which generally appeared hypointense compared with normal liver parenchyma on T1-weighted MR images and hyperintense on T2-weighted images. The MR imaging techniques that were most reliable in detecting metastases were inversion recovery and a relatively T2-weighted, spin-echo technique. CT, because of its shorter imaging time, greater spatial resolution, and lower cost, should remain the preferred screening test for hepatic metastases. MR imaging should be reserved for patients with equivocal CT findings and for patients in whom there is persistent clinical suspicion of hepatic metastases despite a negative CT examination.

  7. Cardiopulmonary manifestations of isolated pulmonary valve infective endocarditis demonstrated with cardiac CT.

    PubMed

    Passen, Edward; Feng, Zekun

    2015-01-01

    Right-sided infective endocarditis involving the pulmonary valve is rare. This pictorial essay discusses the use and findings of cardiac CT combined with delayed chest CT and noncontrast chest CT of pulmonary valve endocarditis. Cardiac CT is able to show the full spectrum of right-sided endocarditis cardiopulmonary features including manifestations that cannot be demonstrated by echocardiography. PMID:25977113

  8. NETL CT Imaging Facility

    SciTech Connect

    2013-09-04

    NETL's CT Scanner laboratory is equipped with three CT scanners and a mobile core logging unit that work together to provide characteristic geologic and geophysical information at different scales, non-destructively.

  9. NETL CT Imaging Facility

    ScienceCinema

    None

    2014-05-21

    NETL's CT Scanner laboratory is equipped with three CT scanners and a mobile core logging unit that work together to provide characteristic geologic and geophysical information at different scales, non-destructively.

  10. CT scan (image)

    MedlinePLUS

    CT stands for computerized tomography. In this procedure, a thin X-ray beam is rotated around the ... D image of a section through the body. CT scans are very detailed and provide excellent information ...

  11. Head CT (image)

    MedlinePLUS

    CT stands for computerized tomography. In this procedure, a thin X-ray beam is rotated around the ... D image of a section through the body. CT scans are very detailed and provide excellent information ...

  12. Knee CT scan

    MedlinePLUS

    A computed tomography (CT) scan of the knee is a test that uses x-rays to take detailed images of the knee. ... table that slides into the center of the CT scanner. When you are inside the scanner, the ...

  13. Chest CT Scan

    MedlinePLUS

    ... Entire Site Health Topics News & Resources Intramural Research Public Health Topics Education & Awareness Resources Contact The Health Information ... Contact Us FAQs Home Health Information for the Public Health Topics Chest CT Scan Explore Chest CT Scan ...

  14. Bilateral tarsometatarsal joint injuries: An unusual mechanism producing unusual variants.

    PubMed

    Young, P S; Clement, V L; Lomax, A; Badhesha, J; Miller, R J; Mahendra, A

    2015-06-01

    Tarsometatarsal (Lisfranc) joint injuries are rare but potentially devastating conditions requiring anatomical reduction and internal fixation or arthrodesis. We describe an unusual mechanism involving forced eversion and dorsiflexion on both fully supinated feet resulting in bilateral tarsometatarsal joint injury. The injury pattern involved incongruity between the medial and middle columns extending between the cuneiform bones with associated fracture of the cuboid on the right and the cuboid, os calcis and talus on the left. Operative fixation is discussed and the clinical outcome was good at 4 years post-operatively. We believe this introduces an additional and potentially serious mechanism of injury and pattern of ligamentous and osseous disruption into the pantheon of injuries classed as Lisfranc, which surgeons should be aware of. Furthermore, we recommend attention to the mechanism of injury in consideration with classification to aid in operative reduction and fixation. PMID:25510168

  15. Cognitive bias and unusual experiences in childhood.

    PubMed

    Hassanali, Nedah; Ruffell, Tamatha; Browning, Sophie; Bracegirdle, Karen; Ames, Catherine; Corrigall, Richard; Laurens, Kristin R; Hirsch, Colette; Kuipers, Elizabeth; Maddox, Lucy; Jolley, Suzanne

    2015-08-01

    Cognitive therapy is recommended for children with psychotic-like, or unusual, experiences associated with distress or impairment (UEDs; UK National Institute for Health and Care Excellence, 2013 [1]). Accurate models of the psychological underpinnings of childhood UEDs are required to effectively target therapies. Cognitive biases, such as the jumping to conclusions data-gathering bias (JTC), are implicated in the development and maintenance of psychosis in adults. In this study, we aimed to establish the suitability for children of a task developed to assess JTC in adults. Eighty-six participants (aged 5-14 years) were recruited from Child and Adolescent Mental Health Service (CAMHS) and community (school) settings, and completed the probabilistic reasoning ('Beads') task, alongside measures of intellectual functioning, general psychopathology, and UEDs. Self-reported reasoning strategy was coded as 'probabilistic' or 'other'. Younger children (5-10 years) were more likely than older children (11-14 years) to JTC (OR = 2.7, 95 % CI = 1.1-6.5, p = 0.03); and to use non-probabilistic reasoning strategies (OR = 9.4, 95 % CI = 1.7-48.8, p = 0.008). Both UED presence (OR = 5.1, 95 % CI = 1.2-21.9, p = 0.03) and lower IQ (OR = 0.9, 95 % CI = 0.9-1.0, p = 0.02) were significantly and independently associated with JTC, irrespective of age and task comprehension. Findings replicate research in adults, indicating that the 'Beads' task can be reliably employed in children to assess cognitive biases. Psychological treatments for children with distressing unusual experiences might usefully incorporate reasoning interventions. PMID:25395382

  16. CT myocardial perfusion imaging.

    PubMed

    Varga-Szemes, Akos; Meinel, Felix G; De Cecco, Carlo N; Fuller, Stephen R; Bayer, Richard R; Schoepf, U Joseph

    2015-03-01

    OBJECTIVE. CT myocardial perfusion imaging is rapidly becoming an important adjunct to coronary CT angiography for the anatomic and functional assessment of coronary artery disease with a single modality. Existing techniques for CT myocardial perfusion imaging include static techniques, which provide a snapshot of the myocardial blood pool, and dynamic techniques. CONCLUSION. This review provides a systematic overview of the presently available approaches for the assessment of myocardial perfusion at CT, including diagnostic accuracy and limitations. PMID:25714277

  17. Unusual localizations of hydatid disease.

    PubMed

    Cl, C; Cl, M; Lafi, H

    2003-01-01

    Hydatid disease is endemic in several Mediterranean countries, posing an important health problem for these countries. The hydatid cyst is characterized by cystic lesions with clear boundaries, which can be observed in all parts of the body. Approximately 70 % of hydatid cysts are situated in the liver, followed by the lung (25 %). The kidneys, spleen, bile ducts, mesentery, soft tissue and brain are less frequent sites. We investigated patients who were treated for hydatid disease in our departments in the last 5 years with respect to localization of the disease, symptoms, surgical intervention, length of hospitalization, diameters of the cyst, and classification by Gharbi. In this retrospective and descriptive study, 176 patients are evaluated who were treated for hydatid disease between 1995 and 1999 in our departments. Of these patients, 14 were included with localization other than in the liver and lungs. Fourteen of the patients diagnosed with unusually located hydatid disease were men, six were women. Their mean age was 41.6 +/- 20.8 years; the length of hospital stay was 7.07 +/- 0.4 days. Overall, 28.6 % of patients with unusually located hydatid cyst had recurrent disease. The time period since last cyst operation was 5.25 +/- 3.5 years. The mean cyst diameter was 96.5 +/- 54.5 mm. According to Gharbi's classification, three cases (21.4 %) of the unusually located hydatid cysts were type I, two (14.3 %) type II, and eight (57.1 %) type III. There was only one case of type IV and no cases of type V. Spleen and kidneys are the organs where hydatid disease is most frequently observed after the liver and lung. It can be observed in all parts of the body including the brain, peritoneum, mesenterium, choledochus, pancreas, bone and muscles. The type of treatment is determined by the localization and type of hydatid disease. Surgical treatment for splenic hydatid cysts is splenectomy. The functional kidney should be saved in non-communicable hydatid disease. Total excision is almost never possible; endocystectomy and drainage procedure should be preferred for hydatid disease of the brain, pancreas and choledochus. Chemotherapy is usually given because of the risk of recurrence; this medical treatment consists in albendazole and mebendazole administration for 3-6 months in the postoperative period. PMID:12752092

  18. [Unusually late debut of lymphangioleiomyomatosis].

    PubMed

    Rasmussen, Eva Rye; Moesgaard, Kristian K; Marklund, Mette; Fabricius, Peder Gunnar

    2015-01-26

    The rare, severe lung disease lymphangioleiomyomatosis (LAM) usually presents with dyspnoea on exertion, cough and expectoration in females in the third decade and is worsened by pregnancy or hormone therapy. Lung transplant is often needed within ten years since no specific treatment is available. The patient in this case report was a mother of two, who had never received hormone therapy. Once, when she was 47-years-old, she had had a period of dyspnoea and pleural empyema and no diagnosis was made, but being 75-years-old she was admitted with moderate dyspnoea on exertion, and high resolution CT showed cysts of the lungs classical for LAM. PMID:25612986

  19. Acinic cell carcinoma of buccal mucosa: An unusual presentation.

    PubMed

    Aravind, R M; Narayanan, N Sangara; Ravishankar, K S; Babu, N Ganesh

    2015-01-01

    Acinic cell carcinoma (ACC) is a rare epithelial malignant neoplasm of salivary glands affecting predominantly the female population. Unusual occurrences of this neoplasm are reported in hard palate, maxillary sinuses, lip, etc. [1] We report one such case where a submandibular swelling that is provisionally diagnosed as pleomorphic adenoma due to its clinical and radiological findings, turned out to be ACC on histopathological evaluation. PMID:26881547

  20. UNUSUAL FILAMENTS INSIDE THE UMBRA

    SciTech Connect

    Kleint, L.

    2013-06-10

    We analyze several unusual filamentary structures which appeared in the umbra of one of the sunspots in AR 11302. They do not resemble typical light bridges in morphology or in evolution. We analyze data from SDO/HMI to investigate their temporal evolution, Hinode/SP for photospheric inversions, IBIS for chromospheric imaging, and SDO/AIA for the overlying corona. Photospheric inversions reveal a horizontal, inverse Evershed flow along these structures, which we call umbral filaments. Chromospheric images show brightenings and energy dissipation, while coronal images indicate that bright coronal loops seem to end in these umbral filaments. These rapidly evolving features do not seem to be common, and are possibly related to the high flare-productivity of the active region. Their analysis could help to understand the complex evolution of active regions.

  1. Unusual phenomenology of autoerotic fatalities.

    PubMed

    Koops, E; Janssen, W; Anders, S; Pschel, K

    2005-01-17

    Between 1983 and 2003 forty accidental autoerotic deaths (all males, 13-79 years old) have been investigated at the Institute of Legal Medicine in Hamburg. Three cases with a rather unusual scenery are described in detail: (1) a 28-year-old fireworker was found hanging under a bridge in a peculiar bound belt system. The autopsy and the reconstruction revealed signs of asphyxiation, feminine underwear, and several layers of plastic clothing. (2) A 16-year-old pupil dressed with feminine plastic and rubber utensils fixed and strangulated himself with an electric wire. (3) A 28-year-old handicapped man suffered from progressive muscular dystrophy and was nearly unable to move. His bizarre sexual fantasies were exaggerating: he induced a nurse to draw plastic bags over his body, close his mouth with plastic strips, and put him in a rubbish container where he died from suffocation. PMID:15694734

  2. Unusual cause of knee locking.

    PubMed

    Huri, Gazi; Bier, Omer Sunkar

    2013-01-01

    We report a case of partial intrasubstance tear of popliteus tendon as an unusual cause of pseudolocking of the knee. A 13-year-old semiprofessional soccer player applied to our clinic with a locked right knee in spite of the therapy applied (cold pack, NSAID, and immobilization) in another institution 20 days after the injury. Significant extension loss was observed in his right knee with 30-90?ROM. Magnetic resonance imaging (MRI) and arthroscopy confirmed the intrasubstance tear of popliteus tendon and synovitis. The ruptured part of the tendon was debrided, and the inflammatory tissue around the tendon, which may lead to pseudolocking, was gently removed with a shaver in order to regain the normal ROM. The patient was discharged with full ROM and weight bearing first day after the surgery. To our knowledge, this is the first case demonstrating intrasubstance tear of popliteus tendon causing pseudolocking of the knee. PMID:23476852

  3. HOW UNUSUAL IS XRF 060218?

    SciTech Connect

    Mandal, Samir; Eichler, David E-mail: mandals@bgu.ac.il

    2010-04-10

    Light curves are calculated for an off-axis observer due to the scattering of primary radiation by extended baryonic material. The unusually long duration and the chromaticity of the light curves above several KeV of XRF 060218 can be explained as a result of the acceleration of the baryonic scattering material by the primary radiation. The observed light curves by our model and detailed fits to the data are presented. The model predicts that {approx} 4 x 10{sup 48} erg are put into accelerated, mildly relativistic baryons by the radiation pressure at large radii from the central engine. It is suggested that the emission below 3 KeV, which lies below the Amati relation, is a baryon contaminated fireball.

  4. Primary combined hepatocellular-cholangiocellular sarcoma: An unusual case

    PubMed Central

    Xiang, Shuai; Chen, Yi-Fa; Guan, Yan; Chen, Xiao-Ping

    2015-01-01

    Primary liver carcinosarcoma is rare. Here we report an unusual case of liver carcinosarcoma containing combined hepatocellular cholangiocarcinoma. A mass in the right liver lobe of a 45-year-old man was accidentally discovered by ultrasonic inspection and computed tomography (CT) scan. Surgical resection was performed following a diagnosis of primary liver cancer. Micropathologically, both carcinomatous and sarcomatous elements were present, and diagnosis of liver carcinosarcoma was confirmed. The carcinomatous element consisted of hepatocellular carcinoma and foci of cholangiocellular carcinoma. The sarcomatous element was composed of spindle cells and bizarre cells, as well as foci of osteosarcoma and chondrosarcoma. Hepatocellular carcinoma cells diffusely expressed both hepatocyte specific markers cytokeratin (CK) 8/18 and cholangiocyte specific markers CK19, and sarcoma cells were positive for vimentin. Interestingly, both carcinomatous and sarcomatous cells expressed epithelial membrane antigen. CD117-positive ductular reactions and small undifferentiated cells were observed. A liver progenitor cell origin of the liver carcinosarcoma was proposed. PMID:26109824

  5. An unusual localization of rhabdomyosarcoma: about a case report.

    PubMed

    Hajji, I; Jellab, B; Benhaddou, R; Baki, S

    2012-01-01

    Rhabdomyosarcoma is a malignant mesenchymal tumor of childhood. The eyelid localization is unusual. We report the case of a 7-year-old child with upper palpebral rhabdomyosarcoma revealed by an isolated blepharoptosis. The CT-scan revealed a well delimited enhancing soft tissue mass involving the upper eyelid. The tumor was excised totally by an upper eyelid incision under general anesthesia. It was limited in preseptal eyelid without extension to the orbit. Histopathologic examination confirmed the diagnosis of embryonic rhabdomyosarcoma. Postoperatively, the upper eyelid regained its motility. The visual axis was cleared. After surgery, three cures of chemotherapy including ifosfamide, vincristine, and actinomycin were administered. After a 4 months follow up period, there was no sign of tumor recurrence. PMID:22550774

  6. The unusual helium variable AM Canum Venaticorum

    NASA Technical Reports Server (NTRS)

    Provencal, J. L.; Winget, D. E.; Nather, R. E.; Robinson, E. L.; Solheim, J.-E.; Clemens, J. C.; Bradley, J. L.; Kleinman, S. J.; Kanaan, A.; Claver, C. F.

    1995-01-01

    The unusual variable star AM CVn has puzzled astronomers for over 40 years. This object, both a photometric and spectroscopic variable, is believed to contain a pair of hydrogen-deficient white dwarfs of extreme mass ratio, transferring material via an accretion disk. We examine the photometric properties of AM CVn, analyzing 289 hours of high-speed photometric data spanning 1976 to 1992. The power spectrum displays significant peaks at 988.7, 1248.8, 1902.5, 2853.8, 3805.2, 4756.5, and 5707.8 microHz (1011.4, 800.8, 525.6, 350.4, 262.8, 210.2, and 175.2 s). We find no detectable power at 951.3 microHz (1051 s), the previously reported main frequency. The 1902.5, 2853.9, and 3805.2 microHz peaks are multiplets, with frequency splitting in each case of 20.77 +/- 0.05 microHz. The 1902.5 microHz seasonal pulse shapes are identical, within measurement noise, and maintain the same amplitude and phase as a function of color. We have determined the dominant frequency to be 1902.50902 +/- 0.00001 microHz with dot P = +1.71 (+/- 0.04) x 10(exp -11) s/s. We discuss the implications of these findings on a model for AM CVn.

  7. CT of osteomyelitis of the spine

    SciTech Connect

    Golimbu, C.; Firooznia, H.; Rafii, M.

    1984-01-01

    Computed tomography (CT) scans were performed in 17 adults with osteomyelitis of the spine. The dominant features were paravertebral soft-tissue swelling, abscess formation, and bone erosion. In two patients there were no findings indicative of osteomyelitis on conventional radiographs, but CT revealed paravertebral abscesses and bone lysis, helping to establish the diagnosis of osteomyelitis, chiefly because of its ability to detect early erosion of spongy vertabral bone, disk involvement, paravertebral soft-tissue swelling or abscess, and extension of the pathology into the spinal canal. Furthermore, CT facilitated closed-needle biopsy, helping to establish the pathologic diagnosis.

  8. [Cardiac tumors: CT and MR imaging features].

    PubMed

    Moskovitch, G; Chabbert, V; Escourrou, G; Desloques, L; Otal, P; Glock, Y; Rousseau, H

    2010-09-01

    The CT and MR imaging features of the main cardiac tumors will be reviewed. Cross-sectional imaging features may help differentiate between cardiac tumors and pseudotumoral lesions and identify malignant features. Based on clinical features, imaging findings are helpful to further characterize the nature of the lesion. CT and MR imaging can demonstrate the relationship of the tumor with adjacent anatomical structures and are invaluable in the presurgical work-up and postsurgical follow-up. PMID:20814374

  9. FDG PET/CT Appearance of Radiation Nephritis.

    PubMed

    Choi, Hyung Jin; Shim, Hunbo; Hyun, Hyewon; Gerbaudo, Victor H; Kim, Chun K

    2016-03-01

    It is often challenging to assess renal activity on FDG-PET/CT due to intense physiological activity in the collecting system, thus any unusual intrarenal activity should be evaluated carefully. While increased bone tracer uptake in the irradiated region of the kidneys has been reported in the literature, altered biodistribution of FDG in irradiated renal tissue is not well described. We report a case of FDG PET/CT showing increased FDG activity in small portions of the kidneys that were previously irradiated. PMID:26562578

  10. Unusual Fears in Children with Autism

    ERIC Educational Resources Information Center

    Mayes, Susan Dickerson; Calhoun, Susan L.; Aggarwal, Richa; Baker, Courtney; Mathapati, Santosh; Molitoris, Sarah; Mayes, Rebecca D.

    2013-01-01

    Unusual fears have long been recognized as common in autism, but little research exists. In our sample of 1033 children with autism, unusual fears were reported by parents of 421 (41%) of the children, representing 92 different fears. Many additional children had common childhood fears (e.g., dogs, bugs, and the dark). More than half of children…

  11. Unusual Fears in Children with Autism

    ERIC Educational Resources Information Center

    Mayes, Susan Dickerson; Calhoun, Susan L.; Aggarwal, Richa; Baker, Courtney; Mathapati, Santosh; Molitoris, Sarah; Mayes, Rebecca D.

    2013-01-01

    Unusual fears have long been recognized as common in autism, but little research exists. In our sample of 1033 children with autism, unusual fears were reported by parents of 421 (41%) of the children, representing 92 different fears. Many additional children had common childhood fears (e.g., dogs, bugs, and the dark). More than half of children

  12. Intraventricular Hemorrhage after Epidural Blood Patching: An Unusual Complication

    PubMed Central

    Couldwell, William T.

    2014-01-01

    The authors present two cases of intraventricular hemorrhage (IVH) believed to be a result of epidural blood patching. The first was a 71-year-old woman who had new onset of nontraumatic IVH on computed tomography (CT) scan after undergoing an epidural blood patch (EBP). This amount of intraventricular blood was deemed an incidental finding since it was of very small volume to account for her overall symptoms. The second patient, a 29-year-old woman, was found to have nontraumatic IVH three days after undergoing an EBP. This was seen on CT scan of the head for workup of pressure-like headaches, nausea, vomiting, and absence seizures. Conservative management was followed in both instances. Serial CT scan of the head in our first patient displayed complete resolution of her IVH. The second patient did not have follow-up CT scans because her overall clinical picture had improved significantly. This highlights a potential sequel of EBP that may be observed on CT scan of the head. In the event that IVH is detected, signs and symptoms of hydrocephalus should be closely monitored with the consideration for a future workup if warranted by the clinical picture. PMID:25544916

  13. Rock Finding

    ERIC Educational Resources Information Center

    Rommel-Esham, Katie; Constable, Susan D.

    2006-01-01

    In this article, the authors discuss a literature-based activity that helps students discover the importance of making detailed observations. In an inspiring children's classic book, "Everybody Needs a Rock" by Byrd Baylor (1974), the author invites readers to go "rock finding," laying out 10 rules for finding a "perfect" rock. In this way, the

  14. Rock Finding

    ERIC Educational Resources Information Center

    Rommel-Esham, Katie; Constable, Susan D.

    2006-01-01

    In this article, the authors discuss a literature-based activity that helps students discover the importance of making detailed observations. In an inspiring children's classic book, "Everybody Needs a Rock" by Byrd Baylor (1974), the author invites readers to go "rock finding," laying out 10 rules for finding a "perfect" rock. In this way, the…

  15. High level cross of the esophagus with the descending aorta in scoliosis: CT study

    SciTech Connect

    Takahashi, Koji; Kikuno, Motoyuki; Hyodoh, Hideki

    1996-05-01

    The esophagus occasionally crosses the descending aorta at an unusually high level (3-5 cm inferior to the carina) in right-sided scoliosis. The purpose of this study was to analyze the mechanism of this finding. We prospectively evaluated thoracic CT scans in 30 patients with right-sided scoliosis. We assessed the alterations in the positions of the esophagus and the descending aorta by the thoracic deformity. The descending aorta followed the scoliotic curve of the spine in 26 (87%) patients. The esophagus followed the scoliotic curve of the spine in 14 (47%) patients and did not in 16 (53%). The anteroposterior diameter of the thorax in the former group was significantly smaller than that in the latter (p < 0.01). High level cross of both structures was identified in 14 (47%) patients, and all of them belonged to the group in which the esophagus did not follow the scoliotic curve of the spine. The unusual high level cross of the esophagus with the descending aorta occasionally seen in scoliosis is due to a difference in the positional alterations of the two structures resulting from the scoliosis. 6 refs., 3 figs.

  16. Unusual presentation of oral amyloidosis.

    PubMed

    Silva, William P P; Wastner, Bruna F; Bohn, Joslei C; Jung, Juliana E; Schussel, Juliana L; Sassi, Laurindo M

    2015-09-01

    Amyloidosis is a rare disease of difficult diagnosis that occurs due accumulation of amyloid substance localized or systemic. The oral cavity is an unusual site and can be related to both localized and systemic forms and for that reason a full investigation is necessary to determine the extent of the disease. This study reports a case of a 58-year-old melanoderm male patient referred to the Department of Oral and Maxillofacial Surgery with white plaques on the tongue and multiple nodules in the region of the buccal mucosa and labial commissure, with 6 months of evolution and painful symptoms. An incisional biopsy was performed on both sites and histological examination indicated the presence of eosinophilic amorphous material within the connective tissue, positive for crystal violet staining, consistent with amyloidosis. At the present time, there is no consensus on the management of local amyloidosis. Surgical treatment of localized forms is indicated in some cases to reduce the functional prejudice. Moreover, follow-up is mandatory, both to manage recurrences and to monitor the possible evolution of the disease to the systemic form. PMID:26604589

  17. Unusual presentation of oral amyloidosis

    PubMed Central

    Silva, William P. P.; Wastner, Bruna F.; Bohn, Joslei C.; Jung, Juliana E.; Schussel, Juliana L.; Sassi, Laurindo M.

    2015-01-01

    Amyloidosis is a rare disease of difficult diagnosis that occurs due accumulation of amyloid substance localized or systemic. The oral cavity is an unusual site and can be related to both localized and systemic forms and for that reason a full investigation is necessary to determine the extent of the disease. This study reports a case of a 58-year-old melanoderm male patient referred to the Department of Oral and Maxillofacial Surgery with white plaques on the tongue and multiple nodules in the region of the buccal mucosa and labial commissure, with 6 months of evolution and painful symptoms. An incisional biopsy was performed on both sites and histological examination indicated the presence of eosinophilic amorphous material within the connective tissue, positive for crystal violet staining, consistent with amyloidosis. At the present time, there is no consensus on the management of local amyloidosis. Surgical treatment of localized forms is indicated in some cases to reduce the functional prejudice. Moreover, follow-up is mandatory, both to manage recurrences and to monitor the possible evolution of the disease to the systemic form. PMID:26604589

  18. Congenital lobar emphysema. The roles of CT and V/Q scan.

    PubMed

    Markowitz, R I; Mercurio, M R; Vahjen, G A; Gross, I; Touloukian, R J

    1989-01-01

    An infant with congenital lobar emphysema of the left upper lobe presented with unusually severe mediastinal shift and underwent computed tomography (CT) and radionuclide V/Q scans. The V/Q scan confirmed the non-functioning nature of the hyperinflated lobe while the CT scan depicted the abnormal anatomy as well as the normal morphologic characteristics of the remaining lung thus allowing for safe and appropriate surgical management. PMID:2910626

  19. Nanoexposure, Unusual Diseases, and New Health and Safety Concerns

    PubMed Central

    Song, Yuguo; Tang, Shichuan

    2011-01-01

    Accumulating studies in animals have shown that nanoparticles could cause unusual rapid lung injury and extrapulmonary toxicity. Whether exposure of workers to nanoparticles may result in some unexpected damage as seen in animals is still a big concern. We previously reported findings regarding a group of patients exposed to nanoparticles and presenting with an unusual disease. The reported disease was characterized by bilateral chest fluid, pulmonary fibrosis, pleural granuloma, and multiorgan damage and was highly associated with the nanoparticle exposure. To strengthen this association, further information on exposure and the disease was collected and discussed. Our studies show that some kinds of nanomaterials, such as silica nanoparticles and nanosilicates, may be very toxic and even fatal to occupational workers exposed to them without any effective personal protective equipment. More research and collaborative efforts on nanosafety are required in order to prevent and minimize the potential hazards of nanomaterials to humans and the environment. PMID:22125440

  20. Unusual presentation of filariasis as an abscess: A case report

    PubMed Central

    Ahuja, Mukta; Pruthi, Sonam Kumar; Gupta, Renu; Khare, Pratima

    2016-01-01

    Bancroftian filariasis, a tropical and subtropical disease caused by Wuchereria bancrofti, is transmitted by the culex mosquito. The disease is conventionally diagnosed by the demonstration of microfilaria in peripheral blood smear. Microfilaria and adult filarial worms have been incidentally detected in fine needle aspiration cytology (FNAC) in various locations. The disease may be missed if one is not aware of the possibility, particularly in cases where eosinophilia is absent. Therefore, clinicians and pathologists need to be more vigilant in the endemic zones for early diagnosis and the treatment of filariasis. We report here an unusual case of filariasis in a 17-year-old female with a swelling in the lower part of the left arm on the flexor surface. This highlights the chances of finding microfilaria in cytology of an unsuspected case at an unusual site. This case, in addition, stresses the fact that microfilaria may be associated with an abscess even in the absence of eosinophilia.

  1. BVRI PHOTOMETRY OF 53 UNUSUAL ASTEROIDS

    SciTech Connect

    Ye, Q.-Z.

    2011-02-15

    We present the results of BVRI photometry and classification of 53 unusual asteroids, including 35 near-Earth asteroids (NEAs), 6 high eccentricity/inclination asteroids, and 12 recently identified asteroid-pair candidates. Most of these asteroids were not classified prior to this work. For the few asteroids that have been previously studied, the results are generally in agreement. In addition to observing and classifying these objects, we merge the results from severalphotometric/spectroscopic surveys to create the largest-ever sample with 449 spectrally classified NEAs for statistical analysis. We identify a 'transition point' of the relative number of C/X-like and S-like NEAs at H {approx} 18 {r_reversible} D {approx} 1 km with confidence level at {approx}95% or higher. We find that the C/X-like:S-like ratio for 18 {<=} H < 22 is about twice as high as that of H < 18 (0.33 {+-} 0.04 versus 0.17 {+-} 0.02), virtually supporting the hypothesis that smaller NEAs generally have less weathered surfaces (therefore less reddish appearance) due to younger collision ages.

  2. CT in the diagnosis of enterovesical fistulae

    SciTech Connect

    Goldman, S.M.; Fishman, E.K.; Gatewood, O.M.B.; Jones, B.; Siegelman, S.S.

    1985-06-01

    Enterovesical fistulae are difficult to demonstrate by conventional radiographic methods. Computed tomography (CT), a sensitive, noninvasive method of documenting the presence of such fistulae, is unique in its ability to outline the extravesical component of the primary disease process. Twenty enterovesical fistulae identified by CT were caused by diverticulitis (nine), carcinoma of the rectosigmoid (two), Crohn disease (three), gynecologic tumors (two), bladder cancer (one), cecal carcinoma (one), prostatic neoplasia (one), and appendiceal abscess (one). The CT findings included intravesical air (90%), passage of orally or rectally administered contrast medium into the bladder (20%), focal bladder-wall thickening (90%), thickening of adjacent bowel wall (85%), and an extraluminal mass that often contained air (75%). CT proved to be an important new method in the diagnosis of enterovesical fistulae.

  3. CT of soft-tissue neoplasms

    SciTech Connect

    Weekes, R.G.; McLeod, R.A.; Reiman, H.M.; Pritchard, D.J.

    1985-02-01

    The computed tomographic scans (CT) of 84 patients with untreated soft-tissue neoplasms were studied, 75 with primary and nine with secondary lesions. Each scan was evaluated using several criteria: homogeneity and density, presence and type of calcification, presence of bony destruction, involvement of multiple muscle groups, definition of adjacent fat, border definition, and vessel or nerve involvement. CT demonstrated the lesion in all 84 patients and showed excellent anatomic detail in 64 of the 75 patients with primary neoplasms. The CT findings were characteristic enough to suggest the histology of the neoplasm in only 13 lesions (nine lipomas, three hemangiomas, one neurofibroma). No malignant neoplasm had CT characteristics specific enough to differentiate it from any other malignant tumor. However, malignant neoplasms could be differentiated from benign neoplasms in 88% of the cases.

  4. Unusual Paraneoplastic Presentation of Cholangiocarcinoma.

    PubMed

    Opneja, Aman; Mahajan, Sonia; Kapoor, Sargam; Marur, Shanthi; Yang, Steve Hoseong; Manno, Rebecca

    2015-01-01

    Introduction. Cutaneous paraneoplastic syndromes are a heterogeneous group of skin manifestations that occur in relation to many known malignancies. Paraneoplastic occurrence of SCLE has been noted but is not commonly reported. SCLE association with cholangiocarcinoma is rare. Case Presentation. A 72-year-old man with a history of extrahepatic stage IV cholangiocarcinoma presented with a pruritic rash. Cholangiocarcinoma had been diagnosed three years earlier and was treated. Five months after interruption of his chemotherapy due to a semiurgent surgery, he presented with explosive onset of a new pruritic rash, arthralgias, and lower extremity edema. Physical exam revealed a scaly erythematous rash on his arms, hands, face, neck, legs, and trunk. It was thick and scaly on sun exposed areas. Skin biopsy revealed vacuolar interface dermatitis. Immunofluorescence revealed IgM positive cytoid bodies scattered along the epidermal basement membrane zone. PET-CT scanning revealed metabolically active recurrent disease in peripancreatic and periportal region with hypermetabolic lymph nodes. Oral steroids and new regimen of chemotherapy were started. Rash improved and steroids were tapered off. Discussion. Paraneoplastic syndromes demonstrate the complex interaction between the immune system and cancer. Treatment resistant SCLE should raise a suspicion for paraneoplastic etiology. PMID:26495003

  5. Unusual Paraneoplastic Presentation of Cholangiocarcinoma

    PubMed Central

    Opneja, Aman; Mahajan, Sonia; Kapoor, Sargam; Marur, Shanthi; Yang, Steve Hoseong; Manno, Rebecca

    2015-01-01

    Introduction. Cutaneous paraneoplastic syndromes are a heterogeneous group of skin manifestations that occur in relation to many known malignancies. Paraneoplastic occurrence of SCLE has been noted but is not commonly reported. SCLE association with cholangiocarcinoma is rare. Case Presentation. A 72-year-old man with a history of extrahepatic stage IV cholangiocarcinoma presented with a pruritic rash. Cholangiocarcinoma had been diagnosed three years earlier and was treated. Five months after interruption of his chemotherapy due to a semiurgent surgery, he presented with explosive onset of a new pruritic rash, arthralgias, and lower extremity edema. Physical exam revealed a scaly erythematous rash on his arms, hands, face, neck, legs, and trunk. It was thick and scaly on sun exposed areas. Skin biopsy revealed vacuolar interface dermatitis. Immunofluorescence revealed IgM positive cytoid bodies scattered along the epidermal basement membrane zone. PET-CT scanning revealed metabolically active recurrent disease in peripancreatic and periportal region with hypermetabolic lymph nodes. Oral steroids and new regimen of chemotherapy were started. Rash improved and steroids were tapered off. Discussion. Paraneoplastic syndromes demonstrate the complex interaction between the immune system and cancer. Treatment resistant SCLE should raise a suspicion for paraneoplastic etiology. PMID:26495003

  6. An unusual cause of cardiothyreosis.

    PubMed

    Marchand, Lucien; Chabert, Paul; Chaudesaygues, Elise; Grasse, Mlanie; Bretones, Stephan; Graeppi-Dulac, Julia; Aupetit, Jean-Franois

    2016-02-01

    Severe hyperthyroidism can cause cardiac complications, such as severe rhythm disturbances, heart failure and angina. Gestational trophoblastic disease (GTD) is a rare complication of pregnancy, ranging from benign hydatidiform mole to malignant form. Clinical hyperthyroidism may occur in GTD, as human chorionic gonadotropin (hCG) secreted by molar tissue is structurally similar to thyroid-stimulating hormone. Cardiothyreosis in this context is exceptional. We report the case of a nulligravida 42-year-old woman without thyroid or cardiac history who presented to the emergency department for dyspnoea. Examinations revealed an acute pulmonary oedema and sinus tachycardia. Serum hCG concentration was abnormally high (762?878?UI/l, N?CT scan showed a voluminous uterine mass and eliminated pulmonary embolism. Cardiac output was increased in echocardiography. Complementary blood tests showed a peripheral hyperthyroidism. GTD was evoked in the context of uterine mass and high hCG concentration, which was responsible for inducing clinical hyperthyroidism and cardiothyreosis. A total hysterectomy was performed and histopathological examinations concluded to a non-invasive complete hydatidiform mole (begnin form). hCG fell to normal within 12?weeks, cardiac and thyroid functions normalized after mole evacuation. PMID:26559442

  7. Unusual cause of pulmonary emboli.

    PubMed

    Vitums, V C

    1984-10-01

    Pulmonary emboli resulted due to intravasation of iophendylate during myelography the previous day. Findings consistent with pulmonary emboli in nonambulatory patients after myelography should not always be diagnosed as thromboembolic disease from blood clots. PMID:6478908

  8. Pneumoconiosis: comparison of imaging and pathologic findings

    SciTech Connect

    Semin Chong; Kyung Soo Lee; Myung Jin Chung; Joungho Han; O. Jung Kwon; d Tae Sung Kim

    2006-01-15

    Pneumoconiosis may be classified as either fibrotic or nonfibrotic, according to the presence or absence of fibrosis. Silicosis, coal worker pneumoconiosis, asbestosis, berylliosis, and talcosis are examples of fibrotic pneumoconiosis. Siderosis, stannosis, and baritosis are nonfibrotic forms of pneumoconiosis that result from inhalation of iron oxide, tin oxide, and barium sulfate particles, respectively. In an individual who has a history of exposure to silica or coal dust, a finding of nodular or reticulonodular lesions at chest radiography or small nodules with a perilymphatic distribution at thin-section computed tomography (CT), with or without eggshell calcifications, is suggestive of silicosis or coal worker pneumoconiosis. Magnetic resonance imaging is helpful for distinguishing between progressive massive fibrosis and lung cancer. CT and histopathologic findings in asbestosis are similar to those in idiopathic pulmonary fibrosis, but the presence of asbestos bodies in histopathologic specimens is specific for the diagnosis of asbestosis. Giant cell interstitial pneumonia due to exposure to hard metals is classified as a fibrotic form of pneumoconiosis and appears on CT images as mixed ground-glass opacities and reticulation. Berylliosis simulates pulmonary sarcoidosis on CT images. CT findings in talcosis include small centrilobular and subpleural nodules or heterogeneous conglomerate masses that contain foci of high attenuation indicating talc deposition. Siderosis is nonfibrotic and is indicated by a CT finding of poorly defined centrilobular nodules or ground-glass opacities.

  9. Pneumoconiosis: Comparison of imaging and pathologic findings

    SciTech Connect

    Chong, S.; Lee, K.S.; Chung, M.J.; Han, J.H.; Kwon, O.J.; Kim, T.S.

    2006-01-15

    Pneumoconiosis may be classified as either fibrotic or nonfibrotic, according to the presence or absence of fibrosis. Silicosis, coal worker pneumoconiosis, asbestosis, berylliosis, and talcosis are examples of fibrotic pneumoconiosis. Siderosis, stannosis, and baritosis are nonfibrotic forms of pneumoconiosis that result from inhalation of iron oxide, tin oxide, and barium sulfate particles, respectively. In an individual who has a history of exposure to silica or coal dust, a finding of nodular or reticulonodular lesions at chest radiography or small nodules with a perilymphatic distribution at thin-section computed tomography (CT), with or without eggshell calcifications, is suggestive of silicosis or coal worker pneumoconiosis. Magnetic resonance imaging is helpful for distinguishing between progressive massive fibrosis and lung cancer. CT and histopathologic findings in asbestosis are similar to those in idiopathic pulmonary fibrosis, but the presence of asbestos bodies in histopathologic specimens is specific for the diagnosis of asbestosis. Giant cell interstitial pneumonia due to exposure to hard metals is classified as a fibrotic form of pneumoconiosis and appears on CT images as mixed ground-glass opacities and reticulation. Berylliosis simulates pulmonary sarcoidosis on CT images. CT findings in talcosis include small centrilobular and subpleural nodules or heterogeneous conglomerate masses that contain foci of high attenuation indicating talc deposition. Siderosis is nonfibrotic and is indicated by a CT finding of poorly defined centrilobular nodules or ground-glass opacities.

  10. Unusual foreign bodies of upper gastrointestinal tract.

    PubMed

    Nijhawan, S; Rai, R R; Agarwal, S; Vijayvergiya, R

    1995-01-01

    We report management of unusual foreign bodies of upper gastrointestinal tract, namely beer bottle cap, raisins and pistachu, mango peel, betelnut and plum seed at a university hospital in Northern India. PMID:8854958

  11. Unusual auricular complications in cutaneous oncology.

    PubMed

    Leshin, B; Hess, S P; White, W L; Matthews, B L; Koufman, J A

    1991-11-01

    The anatomic complexity of the pinna predisposes that structure to a variety of unique, site specific postoperative complications following management of skin cancer. We describe four unusual auricular complications: 1) radiochondronecrosis; 2) autonecrosis of skin during second intention healing; 3) hearing loss secondary to tragal retraction over the external auditory canal; and 4) extension of tumor through fenestrated cartilage. Well-known postoperative auricular complications are reviewed and anticipation and recognition of these unusual complications are emphasized. PMID:1757651

  12. CT of Gastric Emergencies.

    PubMed

    Guniganti, Preethi; Bradenham, Courtney H; Raptis, Constantine; Menias, Christine O; Mellnick, Vincent M

    2015-01-01

    Abdominal pain, nausea, and vomiting are common presenting symptoms among adult patients seeking care in the emergency department, and, with the increased use of computed tomography (CT) to image patients with these complaints, radiologists will more frequently encounter a variety of emergent gastric pathologic conditions on CT studies. Familiarity with the CT appearance of emergent gastric conditions is important, as the clinical presentation is often nonspecific and the radiologist may be the first to recognize gastric disease as the cause of a patient's symptoms. Although endoscopy and barium fluoroscopy remain important tools for evaluating patients with suspected gastric disease in the outpatient setting, compared with CT these modalities enable less comprehensive evaluation of patients with nonspecific complaints and are less readily available in the acute setting. Endoscopy is also more invasive than CT and has greater potential risks. Although the mucosal detail of CT is relatively poor compared with barium fluoroscopy or endoscopy, CT can be used with the appropriate imaging protocols to identify inflammatory conditions of the stomach ranging from gastritis to peptic ulcer disease. In addition, CT can readily demonstrate the various complications of gastric disease, including perforation, obstruction, and hemorrhage, which may direct further clinical, endoscopic, or surgical management. We will review the normal anatomy of the stomach and discuss emergent gastric disease with a focus on the usual clinical presentation, typical imaging appearance, and differentiating features, as well as potential imaging pitfalls. ()RSNA, 2015. PMID:26562229

  13. Child Find

    ERIC Educational Resources Information Center

    Arizona Department of Education, 2006

    2006-01-01

    This brochure describes "Child Find," a component of the Individuals with Disabilities Education Act (IDEA) that requires states to identify, locate, and evaluate all children with disabilities, aged birth through 21, who are in need of early intervention or special education services.

  14. Rheological Characterization of Unusual DWPF Slurry Samples (U)

    SciTech Connect

    Koopman, D. C.

    2005-09-01

    A study was undertaken to identify and clarify examples of unusual rheological behavior in Defense Waste Processing Facility (DWPF) simulant slurry samples. Identification was accomplished by reviewing sludge, Sludge Receipt and Adjustment Tank (SRAT) product, and Slurry Mix Evaporator (SME) product simulant rheological results from the prior year. Clarification of unusual rheological behavior was achieved by developing and implementing new measurement techniques. Development of these new methods is covered in a separate report, WSRC-TR-2004-00334. This report includes a review of recent literature on unusual rheological behavior, followed by a summary of the rheological measurement results obtained on a set of unusual simulant samples. Shifts in rheological behavior of slurries as the wt. % total solids changed have been observed in numerous systems. The main finding of the experimental work was that the various unusual DWPF simulant slurry samples exhibit some degree of time dependent behavior. When a given shear rate is applied to a sample, the apparent viscosity of the slurry changes with time rather than remaining constant. These unusual simulant samples are more rheologically complex than Newtonian liquids or more simple slurries, neither of which shows significant time dependence. The study concludes that the unusual rheological behavior that has been observed is being caused by time dependent rheological properties in the slurries being measured. Most of the changes are due to the effect of time under shear, but SB3 SME products were also changing properties while stored in sample bottles. The most likely source of this shear-related time dependence for sludge is in the simulant preparation. More than a single source of time dependence was inferred for the simulant SME product slurries based on the range of phenomena observed. Rheological property changes were observed on the time-scale of a single measurement (minutes) as well as on a time scale of hours to weeks. The unusual shape of the slurry flow curves was not an artifact of the rheometric measurement. Adjusting the user-specified parameters in the rheometer measurement jobs can alter the shape of the flow curve of these time dependent samples, but this was not causing the unusual behavior. Variations in the measurement parameters caused the time dependence of a given slurry to manifest at different rates. The premise of the controlled shear rate flow curve measurement is that the dynamic response of the sample to a change in shear rate is nearly instantaneous. When this is the case, the data can be fitted to a time independent rheological equation, such as the Bingham plastic model. In those cases where this does not happen, interpretation of the data is difficult. Fitting time dependent data to time independent rheological equations, such as the Bingham plastic model, is also not appropriate.

  15. CT features of nonfunctioning islet cell carcinoma

    SciTech Connect

    Eelkema, E.A.; Stephens, D.H.; Ward, E.M.; Sheedy, P.F. II

    1984-11-01

    To determine the computed tomographic (CT) characteristics of nonfunctioning islet cell carcinoma of the pancreas, the CT scans of 27 patients with that disease were reviewed. The pancreatic tumor was identified as a mass in 26 patients (96%) Of the 25 tumors evaluated with contrast enhancement, 20 became partially diffusely hyperdense relative to nearby normal pancreatic tissue. Hepatic metastases were identified in 15 patients (56%), regional lymphadenopathy in 10 (37%), atrophy of the gland proximal to the tumor in six (22%), dilatation of the biliary ducts in five (19%), and dilatation of the pancreatic duct in four (15%). The CT appearances of the nonfunctioning islet cell tumors were compared with those of 100 ordinary (ductal) pancreatic adenocarcinomas. Although the two types of tumors were sometimes indistinguishable, features found to be more characteristic of islet cell carcinoma included a pancreatic mass of unusually large size, calcification within the tumor, and contrast enhancement of either the primary tumor or hepatic metastases. Involvement of the celiac axis or proximal superior mesenteric artery was limited to ductal carcinoma.

  16. SpaceWire Tiger Team Findings and Suggestions

    NASA Technical Reports Server (NTRS)

    Ishac, Joseph A.

    2011-01-01

    This technical report intends to highlight the key findings and recommendations of the SpaceWire Tiger Team for the CoNNeCT project. It covers findings which are technical in nature, covering design concepts and approaches.

  17. Coats' disease: CT-pathologic correlation in two cases

    SciTech Connect

    Sherman, J.L.; McLean, I.W.; Brallier, D.R.

    1983-01-01

    Computerized axial tomography (CT) of the orbit in two children with Coats' disease demonstrated increased density in the globe. This finding was attributed to the subretinal accumulation of exudate that is a characteristic of this disease. The CT appearance of Coats' disease cannot yet be differentiated from retinoblastoma or other diseases with retinal telangiectasis.

  18. Routine CT screening of psychiatry inpatients.

    PubMed

    McClellan, R L; Eisenberg, R L; Giyanani, V L

    1988-10-01

    During a 3-year period, all inpatients in the psychiatry unit underwent routine screening computed tomography (CT) in an effort to detect clinically unsuspected intracranial abnormalities. Of 261 patients examined who had no focal neurologic deficits, 103 had schizophrenia, 71 had depression, 48 had bipolar disorders, and 39 had paranoid delusions. Findings on 230 (88.1%) of the CT scans were within normal limits, and 27 (10.4%) showed only cortical atrophy. The remaining four cases (1.5%) demonstrated basal ganglia calcification (n = 2), old lacunar infarction (n = 1), or osteoma arising from the inner table of the skull (n = 1), all of which were considered to be clinically unrelated to the patients' psychiatric conditions. In the absence of focal neurologic deficits or other findings suggesting an intracranial abnormality (eg, papilledema, seizures, persistent or increasing headaches), there is no justification for routine CT scanning in patients admitted to the hospital for psychiatric disorders. PMID:3420286

  19. CT Imaging of Craniofacial Fibrous Dysplasia

    PubMed Central

    Unal Erzurumlu, Zerrin; Celenk, Peruze; Bulut, Emel; Barıs, Yakup Sancar

    2015-01-01

    Fibrous dysplasia is a benign fibroosseous bone dysplasia that can involve single (monostotic) or multiple (polyostotic) bones. Monostotic form is more frequent in the jaws. It is termed as craniofacial fibrous dysplasia, when it involves, though rarely, adjacent craniofacial bones. A 16-year-old girl consulted for a painless swelling in the right posterior mandible for two years. Panoramic radiography revealed ground-glass ill-defined lesions in the three different regions of the maxilla and mandible. Axial CT scan (bone window) showed multiple lesions involving skull base and facial bones. Despite lesions in the skull base, the patient had no abnormal neurological findings. The lesion was diagnosed as fibrous dysplasia based on radiological and histopathological examination. In this paper, CT findings and differential diagnosis of CFD are discussed. CT is a useful imaging technique for CFD cases. PMID:26339510

  20. Radiographic findings of anastomotic leaks.

    PubMed

    Lynn, Elizabeth T; Chen, Julia; Wilck, Eric J; El-Sabrout, Kerri; Lo, Chris C; Divino, Celia M

    2013-02-01

    Although computed tomography (CT) scans play an important role in the diagnosis and management of anastomotic leaks (AL), there is no consensus on what radiographic findings are associated with AL. The purpose of this study is to identify the most common CT scan findings associated with AL and whether the amount of extraluminal air or the density of extraluminal fluid can be correlated with the presence of an AL. A retrospective chart review of 210 patients with anastomotic leaks from 2003 to 2010 at Mount Sinai Medical Center was performed. Eighty-six patients fit our criteria and were included. All CT scans were reread by an independent radiologist not involved with patient care. Our study included 59 per cent men and 41 per cent women with a mean age of 51 years. Diagnoses included inflammatory bowel disease (53%), malignancy (21%), and diverticulitis (12%). One hundred per cent of the patients had one of three findings: extraluminal air (92%), extraluminal fluid (88%), or extravasation of contrast (32%). Eighty-one per cent (70/86) had both fluid and air simultaneously. Extraluminal air was seen in 79 patients. The estimated amounts of extraluminal air were as follows: 0 to 25 mL (49%), 26 to 500 mL (41%), 500 to 1000 mL (5%), and more than 1000 mL (5%). The Hounsfield unit (HU) measurements of the fluid ranged from 3 to 633 HUs. The most common CT findings associated with AL are pneumoperitoneum and extraluminal fluid, including extravasation of contrast, which can be seen in up to 100 per cent of patients. The amount of estimated extraluminal air and density of fluid collection have no prognostic value in predicting AL. PMID:23336660

  1. Ten uncommon and unusual variants of renal angiomyolipoma (AML): radiologic-pathologic correlation.

    PubMed

    Schieda, N; Kielar, A Z; Al Dandan, O; McInnes, M D F; Flood, T A

    2015-02-01

    Classic (triphasic) renal angiomyolipoma (AML) is currently classified as a neoplasm of perivascular epithelioid cells. For diagnosis of AML, the use of thin-section non-contrast enhanced CT (NECT) improves diagnostic accuracy; however, identifying gross fat within a very small AML is challenging and often better performed with chemical-shift MRI. Although the presence of gross intra-tumoural fat is essentially diagnostic of AML; co-existing intra-tumoural fat and calcification may represent renal cell carcinoma (RCC). Differentiating AML from retroperitoneal sarcoma can be difficult when AML is large; the feeding vessel and claw signs are suggestive imaging findings. AML can haemorrhage, with intra-tumoural aneurysm size >5mm a more specific predictor of future haemorrhage than tumor size >4cm. Diagnosis of AML in the setting of acute haemorrhage is complex; comparison studies or follow-up imaging may be required. Not all AML contain gross fat and imaging features of AML without visible fat overlap with RCC; however, homogeneity, hyperdensity at NECT, low T2-weighted signal intensity and, microscopic fat are suggestive features. Patients with tuberous sclerosis often demonstrate a combination of classic and minimal fat AML, but are also at a slightly increased risk for RCC and should be imaged cautiously. Several rare pathological variants of AML exist including AML with epithelial cysts and epithelioid AML, which have distinct imaging characteristics. Classic AML, although benign, can be locally invasive and the rare epithelioid AML can be frankly malignant. The purpose of this review is to highlight the imaging manifestations of 10 uncommon and unusual variants of AML using pathological correlation. PMID:25468637

  2. Sonographic findings in tuberculous epididymo-orchitis.

    PubMed

    Trkvatan, Aysel; Kelahmet, Esra; Yazgan, Cisel; Oler, Tlay

    2004-01-01

    Genitourinary tuberculosis is the most common manifestation of extrapulmonary tuberculosis. The epididymides, the seminal vesicles, and the prostate are the most commonly infected sites. The testes are rarely involved. We describe the unusual sonographic findings in a case of tuberculous epididymo-orchitis that presented with multiple small, hypoechoic nodules within the testis. PMID:15211677

  3. Disrupted Stars in Unusual Galaxies

    NASA Astrophysics Data System (ADS)

    Kohler, Susanna

    2016-03-01

    Tidal disruption events (TDEs) occur when a star passes a little too close to a supermassive black hole at the center of a galaxy. Tidal forces from the black hole cause the passing star to be torn apart, resulting in a brief flare of radiation as the stars material accretes onto the black hole. A recent study asks the following question: do TDEs occur most frequently in an unusual type of galaxy?A Trend in DisruptionsSo far, we have data from eight candidate TDEs that peaked in optical and ultraviolet wavelengths. The spectra from these observations have shown an intriguing trend: many of these TDEs host galaxies exhibit weak line emission (indicating little or no current star-formation activity), and yet they show strong Balmer absorption lines (indicating star formation activity occurred within the last Gyr). These quiescent, Balmer-strong galaxies likely underwent a period of intense star formation that recently ended.To determine if TDEs are overrepresented in such galaxies, a team of scientists led by Decker French (Steward Observatory, University of Arizona) has quantified the fraction of galaxies in the Sloan Digital Sky Survey (SDSS) that exhibit similar properties to those of TDE hosts.Quantifying OverrepresentationSpectral characteristics of SDSS galaxies (gray) and TDE candidate host galaxies (colored points): line emission vs. Balmer absorption. The lower right-hand box identifies thequiescent, Balmer-strong galaxies which contain most TDE events, yet are uncommon among the galaxy sample as a whole. Click for a better look! [French et al. 2016]French and collaborators compare the optical spectra of the TDE host galaxies to those of nearly 600,000 SDSS galaxies, using two different cutoffs for the Balmer absorption the indicator of past star formation. Their strictest cut, filtering for very high Balmer absorption, selected only 0.2% of the SDSS galaxies, yet 38% of the TDEs are hosted in such galaxies. Using a more relaxed cutoff selects 2.3% of galaxies on average, yet includes the hosts of 75% of the TDEs.This means that quiescent galaxies with strong past star formation are overrepresented in the TDE host galaxy sample by a factor of ~190 times. Quiescent galaxies with at least moderately strong past star formation are overrepresented among TDE hosts by a factor of ~33.Why the Preference?So why might these galaxies so frequently host TDEs? The authors propose an idea: many of these galaxies may have experienced recent galaxygalaxy mergers. Such a mergercould trigger a burst of star formation, perturb stellar orbits, and then eventually settle into a quiescent state with stars that are more likely to be centrally concentrated and with orbits that might lead them to pass close to the central black hole(s).Future observations of more TDEs will certainly help to further evaluate this trend. But the current data certainly implies that TDEs are discriminating in their choice of host, providing interesting clues about the mechanisms driving their rates.CitationK. Decker French et al 2016 ApJ 818 L21. doi:10.3847/2041-8205/818/1/L21

  4. [A case of facioscapulohumeral muscular atrophy presenting unusual squatting gait, associated with tongue atrophy and sensorineural hearing loss].

    PubMed

    Goto, K; Sugihara, R

    1994-11-01

    A 16-year-old girl has presented speaking disturbance since early in life. Difficulty in running was noted at the age of 7. Her mother (46 years old) had moderate facial weakness and mild proximal weakness of the upper and lower limbs. Neurological examination at age 9 revealed bilateral facial weakness, tongue atrophy and weakness of the shoulder girdle, upper arms, and thighs. Deep tendon reflexes were absent in the four limbs. Gait was waddling. Over the next several years, she developed wasting and weakness around the shoulder girdle, upper arms, thighs, and increased lordosis. She lost the ability to walk by age 13. Since then, she has moved with difficulty in a squatting position. Serum CK was moderately increased and needle EMG in the extremities revealed myopathic changes. Muscle CT demonstrated marked atrophy of the proximal muscles in the left arm and lower limbs and mild atrophy of the calves. Audiogram showed bilateral mild sensorineural hearing loss. Muscle biopsy of the quadriceps at age 9 showed nondiagnostic findings. This case could be diagnosed as congenital facioscapulohumeral muscular dystrophy. Tongue atrophy and sensorineural hearing loss are rarely associated with this syndrome, as well as unusual squatting gait. PMID:7729099

  5. Unusual fractures associated with osteoporosis in premenopausal women.

    PubMed Central

    Richardson, R. M.; Rapoport, A.; Oreopoulos, D. G.; Meema, H. E.; Rabinovich, S.

    1978-01-01

    Two premenopausal women (aged 40 and 34 years) and multiple undisplaced, often asymptomatic fractures of the femurs, ribs, metatarsals and other bones. The fractures, which appeared on roentgenograms as transverse radiolucent zones with variable callus formation, healed slowly or not at all despite treatment with calcium and vitamin D. They resembled pseudofractures (Looser's transformation zones) radiologically, but the biochemical and histologic findings were those of idiopathic osteoporosis rather than osteomalacia. Since neither patient had been subjected to unusual stress it was concluded that the fractures had resulted from normal activity in abnormal bone. Images FIG. 1 FIG. 2 FIG. 3 FIG. 4 PMID:688148

  6. An unusual suicide case by combination of choking and hanging.

    PubMed

    Vapa, Dusan; Radosavkic, Radosav; Maletin, Miljen; Veselinovic, Igor

    2012-12-01

    A 40-year-old man was found dead in his prison cell, hanging on a twisted bandage tightened around his neck. His permanent metal tracheostomy tube was completely corked with a piece of paper wrapped with transparent cellophane from a cigarette case. After police investigation and complete autopsy, suicide was determined as the manner of death. Although suicides by 1 form of asphyxia are relatively common, combination of several different forms of asphyxia is far less frequent. We present this unusual and very rare case of suicide by combination of 2 forms of asphyxia, that is, choking and hanging, along with autopsy findings and discussion. PMID:21897191

  7. The cruel and unusual phenomenology of solitary confinement.

    PubMed

    Gallagher, Shaun

    2014-01-01

    What happens when subjects are deprived of intersubjective contact? This paper looks closely at the phenomenology and psychology of one example of that deprivation: solitary confinement. It also puts the phenomenology and psychology of solitary confinement to use in the legal context. Not only is there no consensus on whether solitary confinement is a "cruel and unusual punishment," there is no consensus on the definition of the term "cruel" in the use of that legal phrase. I argue that we can find a moral consensus on the meaning of "cruelty" by looking specifically at the phenomenology and psychology of solitary confinement. PMID:24971072

  8. The cruel and unusual phenomenology of solitary confinement

    PubMed Central

    Gallagher, Shaun

    2014-01-01

    What happens when subjects are deprived of intersubjective contact? This paper looks closely at the phenomenology and psychology of one example of that deprivation: solitary confinement. It also puts the phenomenology and psychology of solitary confinement to use in the legal context. Not only is there no consensus on whether solitary confinement is a “cruel and unusual punishment,” there is no consensus on the definition of the term “cruel” in the use of that legal phrase. I argue that we can find a moral consensus on the meaning of “cruelty” by looking specifically at the phenomenology and psychology of solitary confinement. PMID:24971072

  9. Patient acceptance for CT colonography: what is the real issue?

    PubMed

    Thomeer, M; Bielen, D; Vanbeckevoort, D; Dymarkowski, S; Gevers, A; Rutgeerts, P; Hiele, M; Van Cutsem, E; Marchal, G

    2002-06-01

    The aim of this study was to evaluate the discomfort associated with CT colonography compared with colonoscopy and bowel purgation cleansing, and to evaluate patient preference between CT colonography and colonoscopy. In a total of 124 patients, scheduled for multidetector virtual CT colonography and diagnostic colonoscopy, patient acceptance and future preference were assessed during the different steps of the procedure (colon preparation, CT examination, and conventional colonoscopy). Patients who described contradictory findings between the degree of discomfort and their preference regarding follow-up examinations were retrospectively reinterviewed regarding the reason for this discrepancy. Colonoscopy was graded slightly more uncomfortable than virtual CT colonography, but the preparation was clearly the most uncomfortable part of the procedure. Concerning their preference regarding follow-up examinations, 71% of the patients preferred virtual CT colonography, 24% preferred colonoscopy, and 5% had no preference. Twenty-eight percent of the patients preferred virtual CT colonography despite that they thought it was equally or even more uncomfortable than colonoscopy. This was mainly due to the faster procedure (17 patients), the lower physical challenge (14 patients), and the lack of sedation (12 patients) of virtual CT colonography. Factors other than the discomfort related to the examinations play an important role in the patient's preference for virtual CT colonography, namely the faster procedure, the lower physical challenge, and the lack of sedation. Since the preparation plays a major decisive factor in the patient acceptance of virtual CT colonography, more attention should be given to fecal tagging. PMID:12042947

  10. UNUSUAL CAUSES OF CUTANEOUS ULCERATION

    PubMed Central

    Panuncialman, Jaymie; Falanga, Vincent

    2010-01-01

    Synopsis Skin ulceration is a major source of morbidity and is often difficult to manage. Ulcers due to an inflammatory etiology or microvascular occlusion are particularly challenging in terms of diagnosis and treatment. The management of such ulcers requires careful assessment of associated systemic conditions and a thorough analysis of the ulcer's clinical and histologic findings. In this report, we discuss several examples of inflammatory ulcers and the approach to their diagnosis and treatment. PMID:21074034

  11. Gastrointestinal cancers in inflammatory bowel disease: An update with emphasis on imaging findings.

    PubMed

    Barral, Matthias; Dohan, Anthony; Allez, Matthieu; Boudiaf, Mourad; Camus, Marine; Laurent, Valrie; Hoeffel, Christine; Soyer, Philippe

    2016-01-01

    Inflammatory bowel diseases (IBD) are associated with an increased risk of gastrointestinal cancers depending on the specific type of IBD, the extent of the disease and its location. Patients with IBD and extensive colonic involvement are at increased risk of colorectal cancer whereas patients with Crohn disease have an increased risk for small-bowel and anal carcinoma. These cancers preferentially develop on sites of longstanding inflammation. In regards to colon cancer, several key pathogenic events are involved, including chromosomal instability, microsatellite instability and hypermethylation. The risk for colon cancer in IBD patients correlates with longer disease duration, presence of sclerosing cholangitis, pancolitis, family history of colorectal cancer, early onset of the disease and severity of bowel inflammation. Identification of increased colorectal cancer risk in individual IBD patients has led to formal surveillance guidelines. Conversely, although an increased risk for other types of cancer has been well identified, no specific formal screening recommendations exist. Consequently, the role of the radiologist is crucial to alert the referring gastroenterologist when a patient with IBD presents with unusual imaging findings at either computed tomography (CT) or magnetic resonance (MR) imaging. This review provides an update on demographics, molecular, clinical and histopathological features of gastrointestinal cancers in IBD patients including colorectal carcinoma, small bowel adenocarcinoma, neuroendocrine tumors and anal carcinoma, along with a special emphasis on the current role of CT and MR imaging. PMID:26315381

  12. Finding food

    PubMed Central

    Forsyth, Ann; Lytle, Leslie; Riper, David Van

    2011-01-01

    A significant amount of travel is undertaken to find food. This paper examines challenges in measuring access to food using Geographic Information Systems (GIS), important in studies of both travel and eating behavior. It compares different sources of data available including fieldwork, land use and parcel data, licensing information, commercial listings, taxation data, and online street-level photographs. It proposes methods to classify different kinds of food sales places in a way that says something about their potential for delivering healthy food options. In assessing the relationship between food access and travel behavior, analysts must clearly conceptualize key variables, document measurement processes, and be clear about the strengths and weaknesses of data. PMID:21837264

  13. Keratocystic odontogenic tumor: case report with CT and ultrasonography findings

    PubMed Central

    Sumer, Mahmut; Celenk, Peruze; Danaci, Murat; Gunhan, mer

    2012-01-01

    Keratocystic odontogenic tumor (KCOT) is a benign odontogenic tumor with a potentially aggressive and infiltrative behavior. KCOT is most commonly occurred in mandible and demonstrate a unilocular, round, oval, scalloped radiolucent area, while large lesions may appear multilocular. An important characteristic of KCOT is its propensity to grow in an antero-posterior direction within medullary cavity of bone causing minimal expansion. Definitive diagnosis relies on histological examination. In this report, a KCOT that had an expansion both buccal and lingual cortical bone is described including its features in computed tomography and ultrasonographic exams. The lesion was removed surgically via an intraoral approach under local anesthesia and histologically reported as a KCOT. PMID:22474650

  14. Acute diverticulitis of the terminal ileum: ultrasonography and CT findings.

    PubMed

    Jeong, Jewon; Hong, Seong Sook; Hwang, Jiyoung; Kim, Hyun-Joo; Chang, Yun Woo

    2015-01-01

    We describe a rare case of terminal ileal diverticulitis in a 68-year-old female with a day of history Epub ahead of print of right lower quadrant pain and tenderness, mimicking acute appendicitis. Ultrasonography revealed small sac-like out-pouching lesions with increased echogenicity of surrounding fat in thickened terminal ileum, suggesting inflamed diverticula. We diagnosed terminal ileal diverticulitis primarily by ultrasonography. The diagnosis was confirmed by subsequent computed tomography. PMID:25475648

  15. Pentalogy of Cantrell with Ectopia Cordis: CT Findings.

    PubMed

    Pirasteh, Ali; Carcano, Carolina; Kirsch, Jacobo; Mohammed, Tan-Lucien H

    2014-12-01

    A 14-month-old girl with pentalogy of Cantrell, a very rare congenital syndrome characterized by an epigastric omphalocele and malformations of the heart, sternum, pericardium, and diaphragm, underwent echocardiography and multidetector computed tomography before surgical repair of these deformities was attempted. These tests revealed multiple cardiovascular and noncardiovascular abnormalities. After surgery, the patient's cardiovascular status was stable. Although studies have shown that echocardiography, multidetector computed tomography, and magnetic resonance imaging may each play a role in the diagnosis and management of this condition, there are few data available to support the use of one imaging modality over another. PMID:25926914

  16. Pentalogy of Cantrell with Ectopia Cordis: CT Findings

    PubMed Central

    Pirasteh, Ali; Carcano, Carolina; Kirsch, Jacobo; Mohammed, Tan-Lucien H.

    2014-01-01

    A 14-month-old girl with pentalogy of Cantrell, a very rare congenital syndrome characterized by an epigastric omphalocele and malformations of the heart, sternum, pericardium, and diaphragm, underwent echocardiography and multidetector computed tomography before surgical repair of these deformities was attempted. These tests revealed multiple cardiovascular and noncardiovascular abnormalities. After surgery, the patients cardiovascular status was stable. Although studies have shown that echocardiography, multidetector computed tomography, and magnetic resonance imaging may each play a role in the diagnosis and management of this condition, there are few data available to support the use of one imaging modality over another. PMID:25926914

  17. Concerted evolution of the tandemly repeated genes encoding primate U2 small nuclear RNA (the RNU2 locus) does not prevent rapid diversification of the (CT){sub n} {center_dot} (GA){sub n} microsatellite embedded within the U2 repeat unit

    SciTech Connect

    Liao, D.; Weiner, A.M.

    1995-12-10

    The RNU2 locus encoding human U2 small nuclear RNA (snRNA) is organized as a nearly perfect tandem array containing 5 to 22 copies of a 5.8-kb repeat unit. Just downstream of the U2 snRNA gene in each 5.8-kb repeat unit lies a large (CT){sub n}{center_dot}(GA){sub n} dinucleotide repeat (n {approx} 70). This form of genomic organization, in which one repeat is embedded within another, provides an unusual opportunity to study the balance of forces maintaining the homogeneity of both kinds of repeats. Using a combination of field inversion gel electrophoresis and polymerase chain reaction, we have been able to study the CT microsatellites within individual U2 tandem arrays. We find that the CT microsatellites within an RNU2 allele exhibit significant length polymorphism, despite the remarkable homogeneity of the surrounding U2 repeat units. Length polymorphism is due primarily to loss or gain of CT dinucleotide repeats, but other types of deletions, insertions, and substitutions are also frequent. Polymorphism is greatly reduced in regions where pure (CT){sub n} tracts are interrupted by occasional G residues, suggesting that irregularities stabilize both the length and the sequence of the dinucleotide repeat. We further show that the RNU2 loci of other catarrhine primates (gorilla, chimpanzee, ogangutan, and baboon) contain orthologous CT microsatellites; these also exhibit length polymorphism, but are highly divergent from each other. Thus, although the CT microsatellite is evolving far more rapidly than the rest of the U2 repeat unit, it has persisted through multiple speciation events spanning >35 Myr. The persistence of the CT microsatellite, despite polymorphism and rapid evolution, suggests that it might play a functional role in concerted evolution of the RNU2 loci, perhaps as an initiation site for recombination and/or gene conversion. 70 refs., 5 figs.

  18. Pediatric CT Scans

    Cancer.gov

    The Radiation Epidemiology Branch and collaborators have initiated a retrospective cohort study to evaluate the relationship between radiation exposure from CT scans conducted during childhood and adolescence and the subsequent development of cancer.

  19. Pelvic CT scan

    MedlinePLUS

    CAT scan - pelvis; Computed axial tomography scan - pelvis; Computed tomography scan - pelvis; CT scan - pelvis ... pubmed/18381118 . Shaw AS, Dixon AK. Multidetector computed tomography. In: Grainger RC, Allison D, Adam, Dixon AK, ...

  20. Arm CT scan

    MedlinePLUS

    CAT scan - arm; Computed axial tomography scan - arm; Computed tomography scan - arm; CT scan - arm ... 2013:chap 57. Shaw AS, Prokop M. Computed tomography. In: Adam A, Dixon AK, Gillard JH, Schaefer- ...

  1. Leg CT scan

    MedlinePLUS

    CAT scan - leg; Computed axial tomography scan - leg; Computed tomography scan - leg; CT scan - leg ... 2012:chap 11. Shaw AS, Prokop M. Computed tomography. In: Adam A, Dixon AK, Gillard JH, Schaefer- ...

  2. CT Colonography (Virtual Colonoscopy)

    MedlinePLUS

    ... information about pregnancy and x-rays. The bowel-cleansing regimen for CT colonography may be similar to ... colonoscopy or consist of a smaller volume of cleansing liquid. Your diet will be restricted to clear ...

  3. Lumbar spine CT scan

    MedlinePLUS

    CAT scan - lumbar spine; Computed axial tomography scan - lumbar spine; Computed tomography scan - lumbar spine; CT - lower back ... stopping.) A computer creates separate images of the spine area, called slices. These images can be stored, ...

  4. Unusual Outflow Tract Ventricular Tachycardia.

    PubMed

    Motonaga, Kara S; Ceresnak, Scott R; Hsia, Henry H

    2016-03-01

    Distinguishing premature ventricular contractions/ventricular tachycardia from the right ventricular outflow tract versus the left ventricular outflow tract can be difficult by electrocardiogram findings alone. A thorough understanding of the outflow tract anatomy and a systematic and meticulous approach to mapping of the ventricular outflow regions and great vessels increases the success rate and decreases the risk of damage to adjacent structures and the conduction system. The use of multimodality imaging, particularly real-time intracardiac echocardiographic guidance, is essential for defining anatomy, ensuring adequate catheter contact, and minimizing risks. PMID:26920175

  5. CT of pituitary abscess

    SciTech Connect

    Fong, T.C.; Johns, R.D.; Long, M.; Myles, S.T.

    1985-06-01

    Pituitary abscess is a rare condition, with only 50 cases reported in the literature. Of those, 29 cases were well documented for analysis. Preoperative diagnosis of pituitary abscess is difficult. The computed tomographic (CT) appearance of pituitary abscess was first described in 1983; the abscess was depicted by axial images with coronal reconstruction. The authors recently encountered a case of pituitary abscess documented by direct coronal CT of the sella turcica.

  6. MRI findings in acute cerebellitis.

    PubMed

    De Bruecker, Y; Claus, F; Demaerel, P; Ballaux, F; Sciot, R; Lagae, L; Buyse, G; Wilms, G

    2004-08-01

    Acute cerebellitis is an inflammatory process involving the cerebellum. We report the clinical, CT and MRI features of four cases and a review of the literature. Bilateral diffuse hemispheric abnormalities represent the most common imaging presentations. Our observations demonstrate the various imaging appearances of acute cerebellitis. Simultaneous involvement of both hemispheres and the vermis has not been reported previously. The development of cerebellar atrophy following an initial normal MR imaging examination is also a new finding. In atypical clinical presentation, MR imaging can lead to the diagnosis. MR imaging findings have, however, no prognostic value. PMID:14968261

  7. An Unusual Case of Cauda Equina Secondary to Spinal Metastasis of Thyroid Cancer

    PubMed Central

    Akhtar, Shabbir; Adeel, Mohammad

    2016-01-01

    Introduction: Cauda equina secondary to metastatic follicular thyroid cancer of the lumbosacral area is a rare entity. Case Report: We report an unusual case of a 52-year-old male who presented with backache, lower limb weakness, and perianal numbness. A CT-scan of the lumbosacral area showed an enhancing mass at the L4, L5 and S1 vertebrae. Histopathology after excision revealed a metastatic thyroid cancer. Hence, a CT scan of the neck and chest was performed which showed a nodule in the left lobe of the thyroid and a mass in the left chest wall. A total thyroidectomy and excision of the chest wall lesion was undergone, which was diagnosed as a follicular carcinoma of the thyroid. Conclusion: Metastatic workup of spinal metastasis should include evaluation of the thyroid gland. PMID:26878006

  8. CT arterial portography and CT hepatic arteriography in detection of micro liver cancer

    PubMed Central

    Li, Li; Wu, Pei-Hong; Mo, Yun-Xian; Lin, Hao-Gao; Zheng, Lie; Li, Jin-Qing; Lu, Li-Xia; Ruan, Chao-Mei; Chen, Lin

    1999-01-01

    AIM: To recognize the characteristic findings of micro-liver cancer (MLC) and to evaluate the effect of CT arterial portography (CTAP) and CT hepatic arteriography (CTHA) in diagnosis of MLC. METHODS: Between April 1996 to December 1998, CTAP and CTHA were performed in 12 patients with MLC, which were not detected by conventional CT examinations. After CTHA, 3 mL-5 mL mixture of lipiodol, doxorubicin and mitoycin C were injected into hepatic artery through the catheter, and the followed up by CT three or four weeks later (Lipiodol CT Lp-CT). RESULTS: A total of 22 micro-tumors (0.2 cm-0.6 cm in diameter) were detected in 12 patients, which manifested as small perfusion defects in CTAP and small round enhancement in CTHA. The rate of detectability of CTAP and CTHA was 68.2% (15/22) and 77.3% (17/22) respectively, and the rate of the simultaneous use of both procedures reached 86.4% (19/22). All micro-tumors were demonstrated as punctate lipiodol deposit foci in Lp-CT. After Lp-CT, the elevated serum level of ?-fetoprotein (AFP) dropped to the normal level in all patients. CONCLUSION: The CTAP and CTHA are the most sensitive imaging methods for detecting micro-liver cancer. Confirmed by the change of the elevated serum AFP level and lipiodol deposit foci in Lp-CT, small perfusion defects in CTAP and puntuate enhancement in CTHA may suggest micro-liver cancer. PMID:11819435

  9. An unusual case of meningitis.

    PubMed

    Pond, Eric Dr; El-Bailey, Sameh; Webster, Duncan

    2015-01-01

    Pasteurella multocida is a rare cause of bacterial meningitis. A 56-year-old man with several pets developed a profoundly decreased level of consciousness following left tympanomastoidectomy. Lumbar puncture produced cerebrospinal fluid with the typical findings of meningitis (low glucose, high protein, high leukocytes). Cultures from the cerebrospinal fluid and a swab of the left ear revealed Gram-negative coccobacillus identified as P multocida. The organism was sensitive to ceftriaxone, ampicillin and penicillin, and a 14-day course of intravenous penicillin was used as definitive treatment, resulting in full recovery. Although rare, P multocida should be considered as a potential cause of meningitis in patients with animal exposure, particularly in the setting of recent cranial surgery. PMID:26236360

  10. CT of a parathyroid lipoadenoma. Case report.

    PubMed

    Frennby, B; Nyman, U; Aspelin, P; Udn, P; Ljungberg, O

    1993-07-01

    A 54-year-old woman with primary hyperparathyroidism underwent parathyroid exploration following negative ultrasonography, CT and 99Tc-201Tl scintigraphy. A 2 x 1.5 x 1-cm large mass dorsal to the midportion of the left thyroid lobe was extirpated and a hyperfunctional lipoadenoma containing 70% or more of fatty tissue was verified microscopically. Retrospective evaluation of CT revealed a well demarcated lipomatous mass with a homogeneous density similar to that of subcutaneous fat corresponding to the surgical finding. PMID:8318300

  11. CT of perineural tumor extension: pterygopalatine fossa

    SciTech Connect

    Curtin, H.D.; Williams, R.; Johnson, J.

    1985-01-01

    Tumors of the oral cavity and paranasal sinuses can spread along nerves to areas apparently removed from the primary tumor. In tumors of the palate, sinuses, and face, this perineural spread usually involves the maxillary division of the trigeminal nerve. The pterygopalatine fossa is a pathway of the maxillary nerve and becomes a key landmark in the detection of neural metastasis by computed tomography (CT). Obliteration of the fat in the fossa suggests pathology. Case material illustrating neural extension is presented and the CT findings are described.

  12. Multithreaded cardiac CT

    SciTech Connect

    Kachelriess, Marc; Knaup, Michael; Kalender, Willi A.

    2006-07-15

    Phase-correlated CT, as it is used for cardiac imaging, is the most popular and the most important but also the most demanding special CT application in the clinical routine, today. Basically, it fulfills the four-dimensional imaging task of depicting a quasiperiodically moving object at any desired motion phase with significantly reduced motion artifacts. Although image quality with phase-correlated reconstruction is far better than with standard reconstruction, there are motion artifacts remaining and improvements of temporal resolution are required. As a well-known alternative to simply decreasing rotation time, we consider a spiral cone-beam CT scanner that has G x-ray guns and detectors mounted. We call this a multisource or a multithreaded CT scanner. Aiming for improved temporal resolution the relative temporal resolution {tau}, which measures the fraction of a motion period that enters the image, is studied as a function of the motion rate (heart rate) and the degree of scan overlap (pitch value) for various configurations. The parameters to optimize are the number of threads G and the interthread parameters {delta}{alpha} and {delta}z, which are the angular and the longitudinal separation between adjacent threads, respectively. To demonstrate the improvements approximate image reconstruction of multithreaded raw data is performed by using a generalization of the extended parallel back projection cone-beam reconstruction algorithm [Med. Phys. 31(6), 1623-1641 (2004)] to the case of multithreaded CT. Reconstructions of a simulated cardiac motion phantom and of simulated semi-antropomorphic phantoms are presented for two and three threads and compared to the single-threaded case to demonstrate the potential of multithreaded cardiac CT. Patient data were acquired using a clinical double-threaded CT scanner to validate the theoretical results. The optimum angle {delta}{alpha} between the tubes is 90 deg.for a double-threaded system, and for triple-threaded scanners it is 60 deg.or 120 deg.. In all cases, {delta}z=0 results as an optimum, which means that the threads should be mounted in the same transversal plane. However, the dependency of the temporal resolution on {delta}z is very weak and a longitudinal separation {delta}z{ne}0 would not deteriorate image quality. The mean temporal resolution achievable with an optimized multithreaded CT scanner is a factor of G better than the mean temporal resolution obtained with a single-threaded scanner. The standard reconstructions showed decreased cone-beam artifacts with multithreaded CT compared to the single-threaded case. Our phase-correlated reconstructions demonstrate that temporal resolution is significantly improved with multithreaded CT. The clinical patient data confirm our results.

  13. Use of CT in the evaluation of cochlear otosclerosis

    SciTech Connect

    Mafee, M.F.; Valvassori, G.E.; Deitch, R.L.; Norouzi, P.; Henrikson, G.C.; Capek, V.; Applebaum, E.L.

    1985-09-01

    Otosclerosis (otospongiosis) occurs when the hard endochondral bone of the otic capsule is replaced by spongy vascular foci of haversian bone. Using computed tomography (CT), the authors studied the ears of 32 selected patients with mixed or sensorineural hearing loss; 24 were suspected of having otosclerosis. CT proved valuable in detecting cochlear otosclerosis, foci of demineralization, and changes in bony texture and enables the easy recognition of subtle radiographic findings. This paper also reports the CT findings of temporal bones in osteogenesis imperfecta and Paget disease.

  14. PET CT: Evolving role in hadron therapy

    NASA Astrophysics Data System (ADS)

    Levy, Richard P.

    2007-08-01

    Computer-assisted fused-image and/or single-machine-integrated PET-CT can show early tissue biochemical changes with improved anatomic resolution, often before there is any structural change. This approach enables the clinician to view and assess the patient's body from a biochemical perspective. In an era of rapidly evolving 3D-conformal hadron treatment, accurate target delineation is a crucial factor in optimization of clinical results. Using PET-CT for better target delineation improves the ability to escalate tumor dose and to minimize dose to adjacent normal tissues, thereby enhancing the potential for improved efficacy of hadron therapy. This paper reviews some of the basic-science underpinnings of PET-CT, and highlights some important findings in the early clinical work thus far performed.

  15. Parotid gland metastasis - an unusual presentation of adenocarcinoma of lung.

    PubMed

    Debnath, C R; Shahjahan, S M; Debnath, M R; Alam, M M; Moshwan, M M; Khan, M F; Rana, M S; Himel, R R; Ahmed, S

    2015-01-01

    Lung cancer is the most frequent malignant disease and the most common cause of cancer death in the world. Primary carcinoma of the lung was an uncommon cancer until the 1930s. Common cell types in bronchial carcinoma are squamous 35%, Adenocarcinoma 30%, Small-cell 20%, Large-cell 15%. We present a case of a bronchial neoplasm metastasis to the parotid gland. A 50 years old male patient presented with a 75cm painless parotid mass that was metastatic adenocarcinoma on histopathology. Then we thoroughly examined the patient and he was investigated accordingly. There was an abnormal shadow in the lung on chest x-ray, CT revealed a lung tumour on left side. Metastasis to the parotid gland from any distant primary site is quite unusual. We are going to present this case in the journal because of its rarity. Parotid gland metastasis from the lung is rare & if a careful examination is not performed primary focus may be overlooked, negatively affecting the lifetime survival rate & the prognosis of the patient. PMID:25725686

  16. Magnetic resonance imaging of unusual intracranial infections.

    PubMed

    Falcone, S; Quencer, R M; Post, M J

    1994-01-01

    We review the etiologic agents, epidemiology, pathogenesis, pathology, clinical manifestations, and imaging features of several unusual intracranial infections that have not been discussed elsewhere in this issue. The central nervous system (CNS) infections discussed are Creutzfeldt-Jakob disease (CrJaD), neurosyphilis, primary amebic meningoencephalitis (PAM), granulomatous amebic encephalitis (GAE), cerebral amebiasis, and cerebral hydatid disease. PMID:8311957

  17. Unusual variant of primary sclerosing cholangitis.

    PubMed Central

    MacSween, R N; Burt, A D; Haboubi, N Y

    1987-01-01

    Two cases of primary sclerosing cholangitis are described, in which the characteristic bile duct lesions were unusual because there was an exuberant and exaggerated fibrous replacement of the ducts which produced dense fibrotic scars in portal tracts. Images Fig 1 Fig 2 Fig 3 Fig 4 PMID:3584507

  18. The Rapunzel Syndrome: An Unusual Trichobezoar Presentation

    PubMed Central

    Lopes, Luiz Roberto; Oliveira, Priscilla Sene Portel; Pracucho, Eduardo Marcucci; Camargo, Marcelo Amade; Coelho Neto, Joo de Souza; Andreollo, Nelson Adami

    2010-01-01

    The Rapunzel syndrome is an unusual form of trichobezoar found in patients with a history of psychiatric disorders, trichotillomania (habit of hair pulling) and trichophagia (morbid habit of chewing the hair), consequently developing gastric bezoars. The principal symptoms are vomiting and epigastric pain. In this case report, we describe this syndrome in a young girl. PMID:20368785

  19. An unusual cause of toe necrosis

    PubMed Central

    Bandawar, Mayur S.; Ansari, Mohammad S.; Behera, Arunanshu; Bhadada, Sanjay K.

    2013-01-01

    Peripheral vascular disease is a rare feature of pheochromocytoma. This potentially catastrophic but curable tumor should be suspected in combination of distal necrosis with hypertension and palpable pulses. We report such an unusual case of pheochromocytoma presenting as toe necrosis. PMID:23776872

  20. Delta Scorpii unusual brightening to first magnitude

    NASA Astrophysics Data System (ADS)

    Sigismondi, Costantino

    2016-01-01

    The Be star delta Scorpii with a range of variability between 2.35 and 1.65 in visible light is having an unusual brightening to magnitude mV=0.8, as measured on 31 Jan 2016 at 3:56 UT and 5:36 UT from Lanciano, Italy.

  1. Dental anesthetic death. An unusual autoerotic episode.

    PubMed

    Leadbeatter, S

    1988-03-01

    The details of an unusual autoerotic death are presented; the postulated method of induction of cerebral hypoxia was inhalation of nitrous oxide from a dental anesthetic machine; the theme of dental anesthesia, presumably an elaborate bondage fetish, recurred in documentary material found at the scene. PMID:3354528

  2. [An unusual case of acute aminophylline intoxication].

    PubMed

    Manes, Massimo; Pellu, Valentina; Radin, Elisabetta; Molino, Andrea; Gabrielli, Danila; Caputo, Donatella; Paternoster, Giuseppe; Torti, Paola; Visetti, Enrico; Nebiolo, Pier Eugenio

    2015-01-01

    Theophylline/aminophylline use for asthma and chronic obstructive pulmonary disease has declined over time, as new and safer therapies developed. However, theophylline/aminophylline overdose can occur. Hereby it is described an unusual case of severe aminophylline intoxication due to mesodermic injections treated with CVVHDF session. PMID:26845210

  3. An unusual case of primary systemic amyloidosis.

    PubMed

    Ambrosone, L; Mansi, L; Salvatore, T; Marino, F; Orabona, P; Rambaldi, A; Rambaldi, P F; Rambaldi, M

    1998-01-01

    Here we report an unusual case of primary systemic amyloidosis. The cutaneous lesions were polymorphic and included involvement of both external auditory canals. The visceral involvement was covert. Mapping of amyloid deposits was performed using scintigraphy with technetium-99m (V) dimercaptosuccinic acid ([99mTc (V)] DMSA). Therapy with melphalan, prednisone and colchicine resulted in considerable improvement. PMID:9552758

  4. Unusual presentation of a simple renal cyst

    PubMed Central

    Maheshwari, Veena; Alam, Kiran; Varshney, Manoranjan; Khan, Roobina; Gaur, Kavita; Harris, S Hasan

    2011-01-01

    The authors present the case of a 23-year-old woman who presented with a lump in her right abdomen which was 7 cm in diameter. Ultrasonography showed a unilocular cyst, which was diagnosed as a simple renal cyst. This case is presented for its rare occurrence in young females and unusual clinical presentation as a huge abdominal mass. PMID:22715271

  5. Amebic meningoencephalitis: spectrum of imaging findings.

    PubMed

    Singh, P; Kochhar, R; Vashishta, R K; Khandelwal, N; Prabhakar, S; Mohindra, S; Singhi, P

    2006-01-01

    Primary amebic meningoencephalitis and granulomatous amebic meningoencephalitis are central nervous system infections caused by free-living amebae. We describe the neuroimaging findings in 5 such cases on CT and MR imaging. A spectrum of findings was seen in the form of multifocal parenchymal lesions, pseudotumoral lesions, meningeal exudates, hemorrhagic infarcts, and necrosis in the brain. Familiarity with the imaging findings is important for the diagnosis and management of this nearly universally fatal disease. PMID:16775267

  6. Noninvasive imaging of a retrocardiac spleen. Unusual component of paraesophageal diaphragmatic hernia.

    PubMed

    Battu, P; D'Cruz, I A; Holman, M; Locksmith, J P

    1992-04-01

    The findings on chest roentgenograms, cardiac ultrasound, computed tomography (CT), and radionuclide liver-spleen scan are described in a 54-year-old man with a paraesophageal diaphragmatic hernia. The CT revealed the spleen as a solid mass with a notched border adjacent to the intrathoracic retrocardiac stomach. The radionuclide scan showed splenic uptake above the diaphragm. The diagnosis in this case, which, to our knowledge, is the first such reported case, was confirmed at surgery. PMID:1555441

  7. Multidetector CT of emergent biliary pathologic conditions.

    PubMed

    Patel, Neel B; Oto, Aytekin; Thomas, Stephen

    2013-01-01

    Various biliary pathologic conditions can lead to acute abdominal pain. Specific diagnosis is not always possible clinically because many biliary diseases have overlapping signs and symptoms. Imaging can help narrow the differential diagnosis and lead to a specific diagnosis. Although ultrasonography (US) is the most useful imaging modality for initial evaluation of the biliary system, multidetector computed tomography (CT) is helpful when US findings are equivocal or when biliary disease is suspected. Diagnostic accuracy can be increased by optimizing the CT protocol and using multiplanar reformations to localize biliary obstruction. CT can be used to diagnose and stage acute cholecystitis, including complications such as emphysematous, gangrenous, and hemorrhagic cholecystitis; gallbladder perforation; gallstone pancreatitis; gallstone ileus; and Mirizzi syndrome. CT also can be used to evaluate acute biliary diseases such as biliary stone disease, benign and malignant biliary obstruction, acute cholangitis, pyogenic hepatic abscess, hemobilia, and biliary necrosis and iatrogenic complications such as biliary leaks and malfunctioning biliary drains and stents. Treatment includes radiologic, endoscopic, or surgical intervention. Familiarity with CT imaging appearances of emergent biliary pathologic conditions is important for prompt diagnosis and appropriate clinical referral and treatment. PMID:24224584

  8. Patient doses from CT examinations in Turkey

    PubMed Central

    Ata, Gke Kaan; Parmaks?z, Ayd?n; ?nal, Tolga; Bulur, Emine; Bulgurlu, Figen; nc, Tolga; Gndo?du, Sadi

    2015-01-01

    PURPOSE We aimed to establish the first diagnostic reference levels (DRLs) for computed tomography (CT) examinations in adult and pediatric patients in Turkey and compare these with international DRLs. METHODS CT performance information and examination parameters (for head, chest, high-resolution CT of the chest [HRCT-chest], abdominal, and pelvic protocols) from 1607 hospitals were collected via a survey. Dose length products and effective doses for standard patient sizes were calculated from the reported volume CT dose index (CTDIvol). RESULTS The median number of protocols reported from the 167 responding hospitals (10% response rate) was 102 across five different age groups. Third quartile CTDIvol values for adult pelvic and all pediatric body protocols were higher than the European Commission standards but were comparable to studies conducted in other countries. CONCLUSION The radiation dose indicators for adult patients were similar to those reported in the literature, except for those associated with head protocols. CT protocol optimization is necessary for adult head and pediatric chest, HRCT-chest, abdominal, and pelvic protocols. The findings from this study are recommended for use as national DRLs in Turkey. PMID:26133189

  9. Testing Peer Effects among College Students: Evidence from an Unusual Admission Policy Change in China

    ERIC Educational Resources Information Center

    Lu, Fangwen

    2014-01-01

    This paper studies a natural experiment due to an unusual change in the college admission policy at a Chinese university, which brought a large number of low-score students into several academic departments in the university. Exploiting large variations in peer characteristics and strong interactions among peer groups, the analysis finds that…

  10. With an Unusually Hands-On Role, State Feels Its Way in New Orleans

    ERIC Educational Resources Information Center

    Robelen, Erik W.

    2006-01-01

    This article reports how Louisiana officials take hits amid strain to start schools. A year after Hurricane Katrina wreaked havoc on New Orleans, the state of Louisiana finds itself in the highly unusual position of essentially starting from scratch--and directly operating--a batch of public schools in the city. While much attention has focused on

  11. Susac's Syndrome: A Case with Unusual Cardiac Vestibular and Imaging Manifestations.

    PubMed

    River, Yaron; Shupak, Avi; Tiosano, Beatrice; Danilov, Vika; Braverman, Itzhak

    2015-01-01

    Susac's syndrome (SS) is a disease of the microvasculature of the retina, brain, and inner ear. We describe a patient with unusual manifestations of SS with possible involvement of the brainstem, cardiac arrhythmia, and MRI findings lacking the characteristic lesions found in Susac's syndrome. PMID:26688762

  12. Susac's Syndrome: A Case with Unusual Cardiac Vestibular and Imaging Manifestations

    PubMed Central

    River, Yaron; Shupak, Avi; Tiosano, Beatrice; Danilov, Vika; Braverman, Itzhak

    2015-01-01

    Susac's syndrome (SS) is a disease of the microvasculature of the retina, brain, and inner ear. We describe a patient with unusual manifestations of SS with possible involvement of the brainstem, cardiac arrhythmia, and MRI findings lacking the characteristic lesions found in Susac's syndrome. PMID:26688762

  13. The need for skull radiography in patients presenting for CT

    SciTech Connect

    Tress, B.M.

    1983-01-01

    One thousand patients had both CT of the head and a conventional skull series of radiographs. Radiographic findings were abnormal in 250 patients (25%), but only 64 patients (6.4%) had diagnostically significant abnormalities at radiography that were not detected by CT. If the 163 patients who presented after acute trauma were excluded from the series, only 39 (4.7%) of the remaining patients had radiographically significant abnormal findings that were not seen at CT, and only two (0.2%) of these abnormalities could not be diagnosed by a lateral skull radiograph alone. In only five patients (0.5%) was the management actively changed because an abnormaltiy that was detected at skull radiography was not detected at CT. Thus, in nontrauma patients who have stroke, epilepsy, dementia, or non-specific symptoms without focal signs, or have recently undergone craniotomy, and who have been referred for CT, skull radiographs are not justified. In the patient with a history and findings that are strongly suggestive of a pathological disorder anywhere other than in the sella turcica, cerebello-pontine angle, and paranasal sinuses, only the lateral skull radiograph should be obtained after CT, and only if CT is equivocal.

  14. Using Helical CT to Predict Stone Fragility in Shock Wave Lithotripsy (SWL)

    SciTech Connect

    Williams, James C. Jr.; Zarse, Chad A.; Jackson, Molly E.; McAteer, James A.; Lingeman, James E.

    2007-04-05

    Great variability exists in the response of urinary stones to SWL, and this is true even for stones composed of the same mineral. Efforts have been made to predict stone fragility to shock waves using computed tomography (CT) patient images, but most work to date has focused on the use of stone CT number (i.e., Hounsfield units). This is an easy number to measure on a patient stone, but its value depends on a number of factors, including the relationship of the size of the stone to me resolution (i.e., the slicewidth) of the CT scan. Studies that have shown a relationship between stone CT number and failure in SWL are reviewed, and all are shown to suffer from error due to stone size, which was not accounted for in the use of Hounsfield unit values. Preliminary data are then presented for a study of calcium oxalate monohydrate (COM) stones, in which stone structure-rather than simple CT number values-is shown to correlate with fragility to shock waves. COM stones that were observed to have structure by micro CT (e.g., voids, apatite regions, unusual shapes) broke to completion in about half the number of shock waves required for COM stones that were observed to be homogeneous in structure by CT. This result suggests another direction for the use of CT in predicting success of SWL: the use of CT to view stone structure, rather than simply measuring stone CT number. Viewing stone structure by CT requires the use of different viewing windows than those typically used for examining patient scans, but much research to date indicates that stone structure can be observed in the clinical setting. Future clinical studies will need to be done to verify the relationship between stone structure observed by CT and stone fragility in SWL.

  15. Using Helical CT to Predict Stone Fragility in Shock Wave Lithotripsy (SWL)

    NASA Astrophysics Data System (ADS)

    Williams, James C.; Zarse, Chad A.; Jackson, Molly E.; Lingeman, James E.; McAteer, James A.

    2007-04-01

    Great variability exists in the response of urinary stones to SWL, and this is true even for stones composed of the same mineral. Efforts have been made to predict stone fragility to shock waves using computed tomography (CT) patient images, but most work to date has focused on the use of stone CT number (i.e., Hounsfield units). This is an easy number to measure on a patient stone, but its value depends on a number of factors, including the relationship of the size of the stone to me resolution (i.e., the slicewidth) of the CT scan. Studies that have shown a relationship between stone CT number and failure in SWL are reviewed, and all are shown to suffer from error due to stone size, which was not accounted for in the use of Hounsfield unit values. Preliminary data are then presented for a study of calcium oxalate monohydrate (COM) stones, in which stone structurerather than simple CT number valuesis shown to correlate with fragility to shock waves. COM stones that were observed to have structure by micro CT (e.g., voids, apatite regions, unusual shapes) broke to completion in about half the number of shock waves required for COM stones that were observed to be homogeneous in structure by CT. This result suggests another direction for the use of CT in predicting success of SWL: the use of CT to view stone structure, rather than simply measuring stone CT number. Viewing stone structure by CT requires the use of different viewing windows than those typically used for examining patient scans, but much research to date indicates that stone structure can be observed in the clinical setting. Future clinical studies will need to be done to verify the relationship between stone structure observed by CT and stone fragility in SWL.

  16. "Unusual brain stone": heavily calcified primary neoplasm with some features suggestive of angiocentric glioma.

    PubMed

    Sajjad, Jahangir; Kaliaperumal, Chandrasekaran; Bermingham, Niamh; Marks, Charles; Keohane, Catherine

    2015-11-01

    This 40-year-old man presented with a 5-month history of progressive right-sided headache associated with visual blurring. He also had a history of epilepsy but had been seizure free with medication for the past 10 years. An initial CT scan of his brain performed 16 years previously had revealed a small area of calcification in the right parietal region. In the current presentation, he had a left-sided homonymous hemianopia but no other neurological deficits. A CT scan of his brain showed a much larger calcified, partly cystic lesion in the right parietal region. Because he was symptomatic, the lesion was excised and the cyst was drained. Histological examination of the excised tissue showed an unusual primary tumor that was difficult to classify but had some features of angiocentric glioma. The heavy calcification, mixed-density cell population, and regions with features of angiocentric glioma were most unusual. The patient remained asymptomatic 5 years after surgery, and follow-up scans did not show recurrence. PMID:26024003

  17. Soft tissue imaging with photon counting spectroscopic CT

    NASA Astrophysics Data System (ADS)

    Shikhaliev, Polad M.

    2015-03-01

    The purpose of this work was experimental investigation of photon counting spectroscopic CT (PCS-CT) imaging of anatomical soft tissue with clinically relevant size. The imaging experiments were performed using a spectroscopic CT system based on CdZnTe photon counting detector with two rows of pixels, 256 pixels in each row, 1  ×  1 mm2 pixel size, and 25.6 cm detector length. The detector could split the x-ray energy spectrum to 5 regions (energy bins), and acquire 5 multi-energy (spectroscopic) CT images in a single CT scan. A sample of round shaped anatomical soft tissue of 14 cm diameter including lean and fat was used for imaging. To avoid the negative effect of anatomical noise on quantitative analysis, a spectroscopic CT phantom with tissue equivalent solid materials was used. The images were acquired at 60, 90, and 120 kVp tube voltages, and spectroscopic image series were acquired with 3 and 5 energy bins. Spectroscopic CT numbers were introduced and used to evaluate an energy selective image series. The anatomical soft tissue with 14 cm diameter was visualized with good quality and without substantial artifacts by the photon counting spectroscopic CT system. The effects of the energy bin crosstalk on spectroscopic CT numbers were quantified and analyzed. The single and double slice PCS-CT images were acquired and compared. Several new findings were observed, including the effect of soft tissue non-uniformity on image artifacts, unique status of highest energy bin, and material dependent visualization in spectroscopic image series. Fat-lean decomposition was performed using dual energy subtraction and threshold segmentation methods, and compared. Using K-edge filtered x-rays improved fat-lean decomposition as compared to conventional x-rays. Several new and important aspects of the PCS-CT were investigated. These include imaging soft tissue with clinically relevant size, single- and double-slice PCS-CT imaging, using spectroscopic CT numbers to quantify multi-energy PCS-CT images, application of K-edge filtered x-rays for improved soft tissue decomposition, and several others. The study suggests that the presented PCS-CT technology meets the requirements of a particular clinical application, i.e. dedicated breast CT.

  18. Soft tissue imaging with photon counting spectroscopic CT.

    PubMed

    Shikhaliev, Polad M

    2015-03-21

    The purpose of this work was experimental investigation of photon counting spectroscopic CT (PCS-CT) imaging of anatomical soft tissue with clinically relevant size. The imaging experiments were performed using a spectroscopic CT system based on CdZnTe photon counting detector with two rows of pixels, 256 pixels in each row, 1  ×  1 mm(2) pixel size, and 25.6 cm detector length. The detector could split the x-ray energy spectrum to 5 regions (energy bins), and acquire 5 multi-energy (spectroscopic) CT images in a single CT scan. A sample of round shaped anatomical soft tissue of 14 cm diameter including lean and fat was used for imaging. To avoid the negative effect of anatomical noise on quantitative analysis, a spectroscopic CT phantom with tissue equivalent solid materials was used. The images were acquired at 60, 90, and 120 kVp tube voltages, and spectroscopic image series were acquired with 3 and 5 energy bins. Spectroscopic CT numbers were introduced and used to evaluate an energy selective image series. The anatomical soft tissue with 14 cm diameter was visualized with good quality and without substantial artifacts by the photon counting spectroscopic CT system. The effects of the energy bin crosstalk on spectroscopic CT numbers were quantified and analyzed. The single and double slice PCS-CT images were acquired and compared. Several new findings were observed, including the effect of soft tissue non-uniformity on image artifacts, unique status of highest energy bin, and material dependent visualization in spectroscopic image series. Fat-lean decomposition was performed using dual energy subtraction and threshold segmentation methods, and compared. Using K-edge filtered x-rays improved fat-lean decomposition as compared to conventional x-rays. Several new and important aspects of the PCS-CT were investigated. These include imaging soft tissue with clinically relevant size, single- and double-slice PCS-CT imaging, using spectroscopic CT numbers to quantify multi-energy PCS-CT images, application of K-edge filtered x-rays for improved soft tissue decomposition, and several others. The study suggests that the presented PCS-CT technology meets the requirements of a particular clinical application, i.e. dedicated breast CT. PMID:25739788

  19. MRI in insulinomas: preliminary findings.

    PubMed

    Liessi, G; Pasquali, C; D'Andrea, A A; Scandellari, C; Pedrazzoli, S

    1992-01-01

    After establishing the diagnosis of an insulinoma, most surgeons prefer preoperative localization. Selective arteriography is usually considered the gold standard for this purpose. Recently, computed tomography (CT) and preoperative US have contended the role to angiography. MRI has been used in few cases of endocrine pancreatic tumors, and its role in this particular field has to be defined. Between November 1988 and September 1990 we evaluated 7 adult patients who had had surgery in our Surgical Department. Eight tumors were resected in 6 patients who were cured; in an 18-year-old woman surgical treatment was unsuccessful. Arteriography, CT, preoperative US, MRI and intraoperative US detected 2, 6, 6, 5 and 6 tumors, respectively. Two insulinomas (0.2 and 0.7 cm) were found at histologic examination in resected specimen. The ability of intraoperative US and careful surgical exploration to resolve more than 90% of cases makes the preoperative use of arteriography and CT of questionable value. If further experience confirms these findings, US and MRI may suffice. PMID:1563404

  20. An Unusual Heliospheric Plasma Sheet Crossing at 1 AU

    NASA Astrophysics Data System (ADS)

    Wu, C. C.; Liou, K.; Vourlidas, A.; Lepping, R. P.; Wang, Y. M.; Plunkett, S. P.; Socker, D. G.; Wu, S. T.

    2014-12-01

    At 11:46UT on September 9, 2011, the Wind spacecraft encountered an interplanetary (IP) fast forward shock. The shock was followed almost immediately (~5 minutes) by a short duration (~35 minutes), extremely large density pulse with a density peak of ~100 cm-3. While a sharp increase in the solar wind density is typical of an IP shock downstream, the unusual large density increase prompts a further investigation. After a close examination of other in situ data from Wind, we find the density pulse was associated with (1) a spike in the plasma beta (ratio of thermal to magnetic pressure), (2) multiple sign changes in the azimuthal angle of magnetic field, (3) depressed magnetic field, (4) a small radial component of magnetic field, and (5) a large (>90 degrees) pitch-angle change in suprathermal electrons (>200 eV) across the density pulse. We conclude that the density pulse is the heliospheric plasma sheet and the estimated thickness is ~820,000km. The unusually large density pulse is likely to be a result of the shock compression from behind. This view is supported by our 3D magnetohydrodynamic simulation. The detailed result and implications will be discussed. *This work is supported partially by ONR 6.1 program

  1. Unusual strains of Microsporum audouinii causing tinea in Europe.

    PubMed

    Brasch, J; Mller, S; Grser, Y

    2015-10-01

    We comment on an unusual strain of Microsporum (M.) audouinii. It was isolated from tinea corporis of a boy who lived in Germany and most likely had acquired his infection during a stay on a farm with animal husbandry in Poland. The strain showed features of M. canis (plenty of markedly rough-walled macroconidia, growth on rice, positive hair perforation) as well as of M. audouinii (white thallus, long macroconidia with central constriction) and in vitro it degraded hair of various mammals. Because its ribosomal internal transcribed spacer region showed 99.9% homology to a M. audouinii reference strain it was finally identified as M. audouinii. We relate these findings with recent observations of M. audouinii causing tinea in Europe. This appraisal suggests that irrespective of an identical ribosomal ITS region distinct M. audouinii strains can display a spectrum of morphological and physiological features that is broader than currently outlined in mycological textbooks. Certain unusual characteristics like an enhanced capacity to utilise keratins may even be associated with unexpected transmission routes. Above all sporadic M. audouinii infections in Europe that bear no relation to an endemic area should be analysed from this perspective. PMID:26252563

  2. Retrospective studies of unusual animal behavior as an earthquake predictor

    NASA Astrophysics Data System (ADS)

    Lott, Dale F.; Hart, Benjamin L.; Howell, Mary W.

    1981-12-01

    We systematically applied a retrospective interview approach to the study of unusual animal behavior prior to seven earthquakes in North, Central and South America. Data taken at some distance from two of the earthquakes provided a baseline rate of unusual animal behavior. In comparison to this baseline one earthquake was preceded by a significant increase in unusual animal behavior and four were not.

  3. 48 CFR 32.114 - Unusual contract financing.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 1 2012-10-01 2012-10-01 false Unusual contract financing... CONTRACTING REQUIREMENTS CONTRACT FINANCING Non-Commercial Item Purchase Financing 32.114 Unusual contract financing. Any contract financing arrangement that deviates from this part is unusual contract...

  4. 48 CFR 1332.114 - Unusual contract financing.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false Unusual contract financing... CONTRACTING REQUIREMENTS CONTRACT FINANCING Non-Commercial Item Purchase Financing 1332.114 Unusual contract financing. The designee authorized to approve unusual contract financing arrangements is set forth in...

  5. 48 CFR 1332.114 - Unusual contract financing.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 5 2014-10-01 2014-10-01 false Unusual contract financing... CONTRACTING REQUIREMENTS CONTRACT FINANCING Non-Commercial Item Purchase Financing 1332.114 Unusual contract financing. The designee authorized to approve unusual contract financing arrangements is set forth in...

  6. 48 CFR 432.114 - Unusual contract financing.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 4 2013-10-01 2013-10-01 false Unusual contract financing... CONTRACTING REQUIREMENTS CONTRACT FINANCING Non-Commercial Item Purchase Financing 432.114 Unusual contract financing. The HCA is authorized to approve unusual contract financing. The signed determination and...

  7. 48 CFR 32.114 - Unusual contract financing.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 1 2014-10-01 2014-10-01 false Unusual contract financing... CONTRACTING REQUIREMENTS CONTRACT FINANCING Non-Commercial Item Purchase Financing 32.114 Unusual contract financing. Any contract financing arrangement that deviates from this part is unusual contract...

  8. 48 CFR 1332.114 - Unusual contract financing.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 5 2012-10-01 2012-10-01 false Unusual contract financing... CONTRACTING REQUIREMENTS CONTRACT FINANCING Non-Commercial Item Purchase Financing 1332.114 Unusual contract financing. The designee authorized to approve unusual contract financing arrangements is set forth in...

  9. 48 CFR 32.114 - Unusual contract financing.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Unusual contract financing... CONTRACTING REQUIREMENTS CONTRACT FINANCING Non-Commercial Item Purchase Financing 32.114 Unusual contract financing. Any contract financing arrangement that deviates from this part is unusual contract...

  10. 48 CFR 432.114 - Unusual contract financing.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 4 2012-10-01 2012-10-01 false Unusual contract financing... CONTRACTING REQUIREMENTS CONTRACT FINANCING Non-Commercial Item Purchase Financing 432.114 Unusual contract financing. The HCA is authorized to approve unusual contract financing. The signed determination and...

  11. 48 CFR 432.114 - Unusual contract financing.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 4 2014-10-01 2014-10-01 false Unusual contract financing... CONTRACTING REQUIREMENTS CONTRACT FINANCING Non-Commercial Item Purchase Financing 432.114 Unusual contract financing. The HCA is authorized to approve unusual contract financing. The signed determination and...

  12. 48 CFR 32.114 - Unusual contract financing.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 1 2013-10-01 2013-10-01 false Unusual contract financing... CONTRACTING REQUIREMENTS CONTRACT FINANCING Non-Commercial Item Purchase Financing 32.114 Unusual contract financing. Any contract financing arrangement that deviates from this part is unusual contract...

  13. 48 CFR 432.114 - Unusual contract financing.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 4 2010-10-01 2010-10-01 false Unusual contract financing... CONTRACTING REQUIREMENTS CONTRACT FINANCING Non-Commercial Item Purchase Financing 432.114 Unusual contract financing. The HCA is authorized to approve unusual contract financing. The signed determination and...

  14. 48 CFR 432.114 - Unusual contract financing.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 4 2011-10-01 2011-10-01 false Unusual contract financing... CONTRACTING REQUIREMENTS CONTRACT FINANCING Non-Commercial Item Purchase Financing 432.114 Unusual contract financing. The HCA is authorized to approve unusual contract financing. The signed determination and...

  15. 48 CFR 1332.114 - Unusual contract financing.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 5 2011-10-01 2011-10-01 false Unusual contract financing... CONTRACTING REQUIREMENTS CONTRACT FINANCING Non-Commercial Item Purchase Financing 1332.114 Unusual contract financing. The designee authorized to approve unusual contract financing arrangements is set forth in...

  16. 48 CFR 32.114 - Unusual contract financing.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 1 2011-10-01 2011-10-01 false Unusual contract financing... CONTRACTING REQUIREMENTS CONTRACT FINANCING Non-Commercial Item Purchase Financing 32.114 Unusual contract financing. Any contract financing arrangement that deviates from this part is unusual contract...

  17. 48 CFR 1332.114 - Unusual contract financing.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 5 2013-10-01 2013-10-01 false Unusual contract financing... CONTRACTING REQUIREMENTS CONTRACT FINANCING Non-Commercial Item Purchase Financing 1332.114 Unusual contract financing. The designee authorized to approve unusual contract financing arrangements is set forth in...

  18. 49 CFR 195.6 - Unusually Sensitive Areas (USAs).

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Unusually Sensitive Areas (USAs). 195.6 Section... HAZARDOUS LIQUIDS BY PIPELINE General § 195.6 Unusually Sensitive Areas (USAs). As used in this part, a USA means a drinking water or ecological resource area that is unusually sensitive to environmental...

  19. An unusual complication of a myoelectric prosthesis.

    PubMed

    Selvarajah, K; Datta, D

    2001-12-01

    This clinical note describes an unusual and previously unreported complication of wearing a myoelectric prosthesis in a child with congenital upper limb deficiency. After an initial period of wearing a cosmetic prosthesis, he was provided with a child's trans-radial myoelectric prosthesis with a Steeper Scamp Electric hand at the age of 21 months. After successful and uncomplicated use of this prosthesis for 2 years--a sudden onset of burns of the skin of the stump underlying the single electrode site was noted. The cause of the burns was thought to be due to heat generated from electrical failure possibly from ingress of moisture. This complication has not before been experienced in the authors' centre, nor has it been reported in the literature. While constant improvements are being made in the field of electrically powered prosthesis, the rehabilitation team should be aware of this unusual complication. PMID:11860099

  20. Unusual causes of papilledema: Two illustrative cases

    PubMed Central

    Nguyen, Ha Son; Haider, Kathryn M.; Ackerman, Laurie L.

    2013-01-01

    Background: Neurosurgeons are frequently among the first physicians asked to evaluate patients with papilledema, and the patient is often referred with the implication that they may require shunting. After an initial evaluation to exclude potential neurosurgical emergencies, the physician should carefully consider various etiologies of papilledema to prevent unnecessary neurosurgical operations. Case Description: The authors report two illustrative cases of unusual causes of papilledema: Anemia and leukemic infiltration of the central nervous system. In each case, a complete blood count provided clues for the diagnosis. A review of the literature is also included. Conclusions: Both patients responded to medical management/treatment of the underlying disease and did not require neurosurgical operative intervention. Papilledema may be caused by other etiologies besides increased intracranial pressure. The authors present two unusual cases leading to papilledema and provide an outline for the workup of these conditions. PMID:23646270

  1. Unusually large sialolith of Wharton's duct

    PubMed Central

    Iqbal, Ali; Gupta, Anup K.; Natu, Subodh S.; Gupta, Atul K.

    2012-01-01

    The formation of calcific concretions in the salivary duct or glands is a common disorder, especially in the submandibular glands. Most of the salivary calculi are small in size, in contrast to those that reach several centimeters, which are reported as megaliths or giant calculi in the literature. They may occur in any of the salivary gland ducts but are most common in Wharton's duct and the submandibular gland. This report presents clinical and radiographical sign of an unusually large sialolith. There was painless swelling on the floor of the edentulous mouth and patient was unaware of it. Radiographical examination revealed large irregular radio-opaque mass superimposed on right canine and premolar areas. This case report describes a patient presenting with an unusually large submandibular gland duct sialolith, the subsequent patient management, the aetiology, diagnosis and its treatment. PMID:23483770

  2. Unusual Bilateral Paramolars Associated with Clinical Complications

    PubMed Central

    Sulabha, A. N.; Sameer, C.

    2015-01-01

    Paramolars are rare supernumerary structures of maxillofacial complex that occur buccally or lingually near the molar row. Predominantly these occur singly; bilateral presentation is very rare. This paper reports two unusual bilateral presentations of paramolars with clinical complication and its management. One of the cases in the present paper also documents the cooccurrence of bilateral paramolars and microdontia of single tooth and one of its paramolars presented with multilobed crown with an anomalous buccal tubercle. PMID:26078890

  3. Total Acquired Vulval Synechia: An Unusual Presentation

    PubMed Central

    2015-01-01

    An unusual case of Acquired Total vulval synechia due to vulvar Lichen planus is reported in an 18-year-old girl, which is an extremely rare condition. It has a potential for producing extensive scarring and narrowing of introitus resulting in dyspareunia and rarely carcinoma of vulva. Successful surgical management of total vulvar synechiae in patient suffering from Lichen Planus is being reported. PMID:26023590

  4. Large Penile Mass With Unusual Benign Histopathology

    PubMed Central

    Johnson, Nate; Voznesensky, Maria; VerLee, Graham

    2015-01-01

    Pseudoepitheliomatous hyperplasia is an extremely rare condition presenting as a lesion on the glans penis in older men. Physical exam without biopsy cannot differentiate malignant from nonmalignant growth. We report a case of large penile mass in an elderly male with a history of lichen sclerosis, highly suspicious for malignancy. Subsequent surgical removal and biopsy demonstrated pseudoepitheliomatous hyperplasia, an unusual benign histopathologic diagnosis with unclear prognosis. We review the literature and discuss options for treatment and surveillance. PMID:26793536

  5. Segmental lichen planus pigmentosus: An unusual presentation

    PubMed Central

    Kumar, Y Hari Kishan; Babu, Anagha Ramesh

    2014-01-01

    Lichen planus pigmentosus (LPP) is a distinct clinical entity commonly encountered in the Indian population. It is considered a variant of lichen planus (LP). A 40-year-old male presented with asymptomatic hyperpigmented macules in a segmental distribution since 10 years that were clinically and histopathologically suggestive of LPP. We propose the terminology “segmental lichen planus pigmentosus” and report this unusual presentation. PMID:24860750

  6. Large Penile Mass With Unusual Benign Histopathology.

    PubMed

    Johnson, Nate; Voznesensky, Maria; VerLee, Graham

    2015-09-01

    Pseudoepitheliomatous hyperplasia is an extremely rare condition presenting as a lesion on the glans penis in older men. Physical exam without biopsy cannot differentiate malignant from nonmalignant growth. We report a case of large penile mass in an elderly male with a history of lichen sclerosis, highly suspicious for malignancy. Subsequent surgical removal and biopsy demonstrated pseudoepitheliomatous hyperplasia, an unusual benign histopathologic diagnosis with unclear prognosis. We review the literature and discuss options for treatment and surveillance. PMID:26793536

  7. Triple Teeth: Report of an Unusual Case

    PubMed Central

    Babaji, Prashant; Prasanth, M. A.; Gowda, Ajith R.; Ajith, Soumya; D'Souza, Henston; Ashok, K. P.

    2012-01-01

    Fusion or synodontia is a union of two or more than two developing teeth. Commonly fusion occurs between teeth of the same dentition, mixed dentition, or between normal and supernumerary teeth. Fused primary teeth present with several clinical problems like caries, periodontal problem, arch asymmetry, delayed eruption, ectopic eruption of succedaneous teeth, aesthetic, and other complications. This paper presents a rare and unusual case of triple teeth in mandibular primary dentition. PMID:23346424

  8. Systemic to pulmonary venous communication (right-to-left shunt) in superior vena cava obstruction demonstrated by spiral CT.

    PubMed

    Ho, H T; Horowitz, A L; Ho, A C

    1999-07-01

    An unusual case of systemic vein to pulmonary vein communication in superior vena cava obstruction is reported. This was a right-to-left shunt, demonstrated by spiral CT and aided by three-dimensional reconstruction. The pulmonary venous shunts were mainly seen in fibro-atelectatic lung where prominent bridging veins were concentrated. PMID:10624332

  9. FDG-PET/CT Imaging for Staging and Target Volume Delineation in Preoperative Conformal Radiotherapy of Rectal Cancer

    SciTech Connect

    Bassi, Maria Chiara; Turri, Lucia; Sacchetti, Gianmauro; Loi, Gianfranco; Cannillo, Barbara; La Mattina, Pierdaniele; Brambilla, Marco; Inglese, Eugenio; Krengli, Marco

    2008-04-01

    Purpose: To investigate the potential impact of using {sup 18}F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) on staging and target volume delineation for patients affected by rectal cancer and candidates for preoperative conformal radiotherapy. Methods and Materials: Twenty-five patients diagnosed with rectal cancer T3-4 N0-1 M0-1 and candidates for preoperative radiotherapy underwent PET/CT simulation after injection of 5.18 MBq/kg of FDG. Clinical stage was reassessed on the basis of FDG-PET/CT findings. The gross tumor volume (GTV) and the clinical target volume (CTV) were delineated first on CT and then on PET/CT images. The PET/CT-GTV and PET/CT-CTV were analyzed and compared with CT-GTV and CT-CTV, respectively. Results: In 4 of 25 cases (24%), PET/CT affected tumor staging or the treatment purpose. In 3 of 25 cases (12%) staged N0 M0, PET/CT showed FDG uptake in regional lymph nodes and in a case also in the liver. In a patient with a single liver metastasis PET/CT detected multiple lesions, changing the treatment intent from curative to palliative. The PET/CT-GTV and PET/CT-CTV were significantly greater than the CT-GTV (p = 0.00013) and CT-CTV (p = 0.00002), respectively. The mean difference between PET/CT-GTV and CT-GTV was 25.4% and between PET/CT-CTV and CT-CTV was 4.1%. Conclusions: Imaging with PET/CT for preoperative radiotherapy of rectal cancer may lead to a change in staging and target volume delineation. Stage variation was observed in 12% of cases and a change of treatment intent in 4%. The GTV and CTV changed significantly, with a mean increase in size of 25% and 4%, respectively.

  10. Hemothorax an Unusual Complication during Liver RFA

    PubMed Central

    Tsagouli, Paraskevi; Pomoni, Mary; Tanteles, Savvas; Pomoni, Anastasia; Thanos, Loukas

    2011-01-01

    We present a case of a 70-year-old patient with hepatocellular carcinoma treated with RFA. The lesion was located in segment II under the ribs. During RFA pleural effusion is presented. After the procedure a dual phase CT revealed haemothorax and extravasation of the contrast medium from the intercostal vessels. PMID:25954541

  11. Unusual Presentation of Recurrent Pyogenic Bilateral Psoas Abscess Causing Bilateral Pulmonary Embolism by Iliac Vein Compression

    PubMed Central

    Ijaz, Mohsin; Sakam, Sailaja; Ashraf, Umair; Marquez, Jose Gomez

    2015-01-01

    Patient: Male, 47 Final Diagnosis: Bilateral psoas abscess • acute lower extremity deep vein thrombosis • bilateral pulmonary embolism Symptoms: Progressive left leg swelling • productive cough with whitish sputum • right flank pain Medication: Antibiotics and anticoagulation Clinical Procedure: CT-guided percutaneous drain placement Specialty: Internal Medicine/Critical Care Objective: Unusual presentation Background: Psoas abscesses are a known cause of back pain, but they have not been reported as a cause of acute lower extremity thromboses and bilateral pulmonary emboli. We report a patient with bilateral psoas abscesses causing extensive pulmonary emboli through compression of the iliac vein. Case Report: A 47-year-old man presented with bilateral leg swelling over 4 weeks. Physical examination revealed a thin male with bilateral leg swelling, extending to the thigh on his left side. He had hemoglobin of 10.5 g/dl, leukocytosis of 16 000/ml, and an elevated D-dimer. A computed tomography (CT) angiogram of his chest showed extensive bilateral pulmonary emboli and infarcts. He remained febrile with vague flank pain, prompting a CT of his abdomen and pelvis that showed large, multiloculated, septated, bilateral psoas abscesses with compression of the left femoral vein by the left psoas abscess and a thrombus distal to the occlusion. Two liters of pus was drained from the left psoas abscess by CT-guidance, and although the Gram staining showed Gram-positive cocci in clusters, cultures from the abscess and blood were negative. A repeat CT showed resolution of the abscesses, and the drain was removed. He was discharged to a nursing home to complete a course of intravenous antibiotics and anticoagulation. Conclusions: Although the infectious complications of psoas abscesses have been described in the literature, the mechanical complications of bilateral psoas abscesses are lacking. It is important to assess for complete resolution of psoas abscesses through follow-up imaging to prevent venous thromboembolic events. PMID:26356406

  12. Clinical application of CT and CT-guided percutaneous transthoracic needle biopsy in patients with indeterminate pulmonary nodules*

    PubMed Central

    Cardoso, Luciana Vargas; Souza, Arthur Soares

    2014-01-01

    OBJECTIVE: To investigate the clinical application of CT and CT-guided percutaneous transthoracic needle biopsy (CT-PTNB) in patients with indeterminate pulmonary nodules (IPNs). METHODS: We retrospectively studied 113 patients with PNs undergoing CT and CT-PTNB. Variables such as gender, age at diagnosis, smoking status, CT findings, and CT-PTNB techniques were analyzed. Data analysis was performed with the Student's t-test for independent samples the chi-square test, and normal approximation test for comparison of two proportions. RESULTS: Of the 113 patients studied, 68 (60.2%) were male and 78 (69%) were smokers. The diameter of malignant lesions ranged from 2.6 cm to 10.0 cm. Most of the IPNs (85%) were located in the peripheral region. The biopsied IPNs were found to be malignant in 88 patients (77.8%) and benign in 25 (22.2%). Adenocarcinoma was the most common malignant tumor, affecting older patients. The IPN diameter was significantly greater in patients with malignant PNs than in those with benign IPNs (p < 0.001). Having regular contour correlated significantly with an IPN being benign (p = 0.022), whereas spiculated IPNs and bosselated IPNs were more often malignant (in 50.7% and 28.7%, respectively). Homogeneous attenuation and necrosis were more common in patients with malignant lesions (51.9% and 26.9%, respectively) CONCLUSIONS: In our sample, CT and CT-PTNB were useful in distinguishing between malignant and benign IPNs. Advanced age and smoking were significantly associated with malignancy. Certain CT findings related to IPNs (larger diameter, spiculated borders, homogeneous attenuation, and necrosis) were associated with malignancy. PMID:25210960

  13. Iterative reconstruction in cardiac CT.

    PubMed

    Naoum, Christopher; Blanke, Philipp; Leipsic, Jonathon

    2015-01-01

    Iterative reconstruction (IR) has the ability to reduce image noise in CT without compromising diagnostic quality, which permits a significant reduction in effective radiation dose. This been increasingly integrated into clinical CT practice over the past 7years and has been particularly important in the field of cardiac CT with multiple vendors introducing cardiac CT-compatible IR algorithms. The following review will summarize the principles of IR algorithms, studies validating their noise- and dose-reducing abilities, and the specific applications of IR in cardiac CT. PMID:26088375

  14. Cholesterol granuloma of the petrous apex: CT diagnosis

    SciTech Connect

    Lo, W.W.M.; Solti-Bohman, L.G.; Brackmann, D.E.; Gruskin, P.

    1984-12-01

    Cholesterol granuloma of the petrous apex is a readily recognizable and treatable entity that is more common than previously realized. Cholesterol granuloma grows slowly in the petrous apex as a mass lesion until it produces hearing loss, tinnitus, vertigo, and facial twitching. Twelve cases of cholesterol granuloma of the petrous apex are illustrated; ten of these analyzed in detail, especially with respect to CT findings. A sharply and smoothly marginated expansile lesion in the petrous apex, isodense with plain and nonenhancing on CT, is in all probability a cholesterol granuloma. Preoperative recognition by CT is important for planning proper treatment.

  15. Cochlear otosclerosis (otospongiosis): CT analysis with audiometric correlation

    SciTech Connect

    Swartz, J.D.; Mandell, D.W.; Berman, S.E.; Wolfson, R.J.; Marlowe, F.I.; Popky, G.L.

    1985-04-01

    Ninety patients who had suspected or confirmed fenestral or cochlear otosclerosis underwent CT examination. Foci of demineralization in the otic capsule were discovered in 20 ears (12 patients). Audiometric studies of the 12 patients revealed sensorineural hearing loss (SNHL) with distinct correlation of CT findings with progressivity and with involvement of the frequency level subtended by the specific area of the cochlea involved. Foci of abnormal increased density, presumably representing the healed phase of this disorder, were found less frequently than expected. There was a predilection for the basilar turn. All patients had static SNHL in the higher frequencies. The healed phase of this disorder is probably not consistently diagnosable with CT.

  16. CT of radiation-induced hepatic injury

    SciTech Connect

    Jeffrey, R.B. Jr.; Moss, A.A.; Quivey, J.M.; Federle, M.P.; Wara, W.M.

    1980-09-01

    The CT findings in three patients with radiation-induced hepatic injury are discussed. In each patient a sharply defined band of low density was identified within the liver in an area of prior radiation. The low density bands resolved on follow-up examination. Computed tomography is useful in the diagnosis and follow-up of patients with suspected radiation hepatitis and in differentiating radiation change from metastatic disease.

  17. FDG PET and Split-Bolus Multi-Detector Row CT Fusion Imaging in Oncologic Patients: Preliminary Results.

    PubMed

    Scialpi, Michele; Palumbo, Isabella; Gravante, Sabrina; Buresta, Tommaso; D'Andrea, Alfredo; Pierotti, Luisa; Palumbo, Barbara

    2016-03-01

    Purpose To assess the incremental value of split-bolus multidetector computed tomography (CT) combined with fluorine 18 fluorodeoxyglucose (FDG) positron emission tomography (PET) for follow-up of oncologic patients. Materials and Methods The institutional ethics committee approved the use of this protocol. Thirty-eight oncologic patients who underwent FDG PET/unenhanced multidetector CT and split-bolus multidetector CT for restaging were investigated retrospectively. The split-bolus CT protocol included imaging during the hepatic arterial and portal venous phases in one scan. Software was used for fusion of the independently acquired FDG PET and split-bolus CT data, and fused datasets were compared with FDG PET/unenhanced CT data. The standard of reference for diagnosis of lesions in all patients was a combination of histologic results (if available), clinical results (medical history, physical examination, and laboratory test results), and the results of follow-up imaging (conventional CT, magnetic resonance imaging, and/or ultrasonography) for at least 6 months. Descriptive statistics were used. Results Fifty-nine true-positive lesions were identified with fused FDG PET/split-bolus CT; 41 were concordant and detected with both split-bolus CT and PET/unenhanced CT, 16 with split-bolus CT only, and two with PET/unenhanced CT. Two different false-positive lesions were identified with PET/unenhanced CT and PET/split-bolus CT. Furthermore, in 20 of 38 (53%) patients, FDG PET/split-bolus CT allowed detection of important additional findings (n = 40) not detected at FDG PET/unenhanced CT. Both the tumor-related findings (n = 13, 32.5%) and the non-tumor-related findings (n = 27, 67.5%) were important to the clinical treatment of these patients. Conclusion Fused FDG PET/split-bolus multidetector CT provides additional information compared with FDG PET/unenhanced multidetector CT in oncologic patients. () RSNA, 2015. PMID:26361222

  18. An unusual bilateral fibroepithelial pharyngeal polyps: report of a case.

    PubMed

    Janjatov, B; Eri?, M; Soji?, D

    2012-05-01

    Fibroepithelial polyps are benign polypoid lesions arising from the mesodermal tissue and composed of varying amounts of stroma covered by squamous epithelium. We report the unusual case of a 57 years old man who visited our Hospital with complains of airway obstruction and uneasy feeling like a foreign body deep in his throat. After medical examination we find a large mass on the right side of his hypopharinx and we resected tumour as an emergency procedure. Postoperative recovery was good. After two years patient came again in our Hospital with the same feeling and we found another lesion on the left side of his hypopharynx. We repeated the same surgical procedure like the first time. In medical review that is a rare lesion with small number of references. In this case, fibroepithelial polyps arose from the hypopharynx and these potentially fatal lesions may have resulted in complete airway obstruction. PMID:22774416

  19. Unusually high rotational temperature of the CN radical

    NASA Astrophysics Data System (ADS)

    Kre?owski, J.; Galazutdinov, G.; Beletsky, Y.

    2011-07-01

    We analyse a high-resolution, high signal-to-noise spectrogram of the hot reddened star Trumpler 16 112 to find relationships between the physical parameters of the intervening interstellar medium (e.g., the rotational temperature of the CN radical) and the intensities of interstellar lines/bands. We report on the discovery of an interstellar cloud that shows an exceptionally high rotational temperature of CN (4.5 K) and unusually strong Ca I and Fe I interstellar lines. This rare CaFe-type cloud seemingly contains no diffuse band carriers. Based on observations collected at the European Organisation for Astronomical Research in the Southern Hemisphere, Chile. Programs 073.D-0609(A) and 082.C-0566(A).

  20. Unusual presentations of osteoarticular tuberculosis in two paediatric patients

    PubMed Central

    Cheung, Jason Pui Yin; Ho, Kenneth Wai Yip; Lam, Ying Lee; Shek, Tony Wai Hung

    2012-01-01

    Tuberculosis is a universal mimicker and thus could be a differential diagnosis of any osteolytic lesion. Bone biopsy is crucial in these cases for culture and histological proof of tuberculous infection. This is a case report of two paediatric patients with unusual presentations of tuberculosis. One patient presented with knee pain and had imaged findings of an osteolytic lesion at the epiphysis. Interval scan showed spread of the lesion through the physis to the metaphyseal region. The second patient presented with hip pain and an osteolytic lesion of the acetabulum. He was subsequently found to have involvement of the brain and spine as well. Both patients were diagnosed with tuberculosis by bone biopsy for culture and pathological examination. They were treated successfully with antituberculous medications without chronic sequelae. These two patients showed that early recognition and prompt treatment are critical for management of tuberculosis to avoid chronic sequelae. PMID:23087272

  1. Necrobiosis lipoidica with elastophagocytosis on an unusual location.

    PubMed

    Tee, Shang-Ian; Chen, Qi Ping; Lim, Yen Loo

    2014-09-01

    Necrobiosis lipoidica (NL) is a granulomatous disease of collagen degeneration classically affecting the lower extremities. Elastophagocytosis is a histological finding, whereby multinucleate macrophages demonstrate phagocytosis of elastic fibers commonly associated with sun-damaged skin. Elastophagocytosis is not typically described in NL. The authors present a patient who presented with reddish-yellow plaques on both his forearms. Skin biopsy revealed extensive palisaded granulomas consistent with NL and features of elastophagocytosis in the upper dermis. The unusual site of presentation is a diagnostic pitfall, further complicated by the histological features of elastophagocytosis, for which the differential diagnosis of actinic granuloma needs to be considered. This case highlights the importance of clinicopathological correlation to arrive at a definitive diagnosis in situations where unexpected features on physical examination and histology may confound the clinical picture. PMID:24786578

  2. Spleen in Hodgkin disease: diagnostic value of CT

    SciTech Connect

    Strijk, S.P.; Wagener, D.J.T.; Bogman, M.J.J.T.; de Pauw, B.E.; Wobbes, T.

    1985-03-01

    Findings of CT of the spleen were compared with those of histologic examination in 35 patients who had Hodgkin disease. CT provides a simple way to calculate splenic size. This index is also of value in the assessment of the histologic state of the spleen. An accuracy rate of 91%, specificity of 94%, and a sensitivity of 89% in diagnosing splenic localization of lymphoma was found in this study.

  3. Thin-Section CT Characteristics and Longitudinal CT Follow-up of Chemotherapy Induced Interstitial Pneumonitis

    PubMed Central

    Lee, Han Na; Kim, Mi Young; Koo, Hyun Jung; Kim, Sung-Soo; Yoon, Dok Hyun; Lee, Jae Cheol; Song, Jin Woo

    2016-01-01

    Abstract To describe the computed tomography (CT) features of chemotherapy-induced interstitial pneumonitis (CIIP) with longitudinal follow-up. The study was approved by the local ethics committee. One hundred consecutive patients with CIIP between May 2005 and March 2015 were retrospectively enrolled. The initial CT was reviewed by 2 independent chest radiologists and categorized into 1 of 4 CT patterns in accordance with the 2013 guidelines for idiopathic interstitial pneumonia: nonspecific interstitial pneumonia (NSIP), organizing pneumonia (OP), hypersensitivity pneumonitis (HP) mimicking desquamative interstitial pneumonitis, and diffuse alveolar damage (DAD). We assessed semiquantitative analysis on a 5% scale to assess the extent of parenchymal abnormalities (emphysema, reticulation, ground-glass opacity, consolidation, honeycombing cyst) and their distribution on initial (n = 100), subsequent (n = 87), and second follow-up CT (n = 48). Interval changes in extent on follow-up CT were compared using paired t test. The clinic-radiologic factors were compared between Group 1 (NSIP and OP patterns) and Group 2 (HP and DAD patterns) using χ2 and independent t tests. The most common pattern of CIIP on the initial CT was HP (51%), followed by NSIP (23%), OP (20%), and DAD (6%). Diffuse ground-glass opacity was the most common pulmonary abnormality. The predominant distribution was bilateral (99%) and symmetric (82%), with no craniocaudal (60%) or axial (79%) dominance. Subsequent and second follow-up CTs showed decreased extent of total pulmonary abnormalities (P < 0.001, respectively). In comparison with Group 1 CIIP, Group 2 CIIP was more likely to be caused by molecularly targeted drugs (P = 0.030), appeared earlier (P = 0.034), and underwent more complete resolution (P < 0.001). Use of a CT pattern–recognition approach to CIIP is appropriate and practical in interpreting radiological findings. PMID:26765442

  4. Pitfalls in PET/CT imaging

    NASA Astrophysics Data System (ADS)

    Rondogianni, Ph; Papathanasiou, N.; Giannopoulou, Ch

    2011-09-01

    PET with 2-[fluorine 18] fluoro-2-deoxy-d-glucose (FDG), has been a clinical tool for the evaluation of various cancers providing valuable metabolic information clinically helpful in the diagnosis, initial staging, therapy monitoring and restaging. However, FDG is not specific for neoplastic processes. Unless anatomic correlation is available to delineate normal structures, pathologic sites of FDG accumulation can easily be confused with normal physiological uptake, leading to false-positive or false-negative findings. Coregistration of PET scans (functional and morphologic information) with computed tomographic (CT) scans (anatomic information) using a combined PET-CT scanner improves the overall sensitivity and specificity of information provided by PET or CT alone. In this paper, we discuss the probable causes of false negative images and pitfalls due to technical reasons, inflammatory processes or benign lesions as well as the utility of PET-CT in differentiating malignant from inflammatory and benign processes, since in some cases such differentiation cannot be made, with certainty, using FDG PET alone.

  5. Lateral displacement of the right kidney by the colon: an anatomic variation demonstrated by CT

    SciTech Connect

    Silverman, P.M.; Kelvin, F.M.; Korobkin, M.

    1983-02-01

    Lateral displacement of the kidney on a urogram can be caused by a variety of retroperitoneal abnormalities, including enlarged lymph nodes, primary or metastatic neoplasm, aortic aneurysm, hematoma, abscess, or even benign accumulations of fat. CT commonly is used to evaluate the cause of renal displacement and often suggests the correct etiology. An unusual case is reported in which CT demonstrated that lateral displacement of the right kidney was caused by insinuation of an otherwise normal right colon between the kidney and the right psoas muscle. The authors are not aware of any previous report of this benign anatomic variant.

  6. Clinical indications and utilization of 320-detector row CT in 2500 outpatients.

    PubMed

    Tabibian, Benjamin; Roach, Cayce J; Hanson, Eric H; Wynn, Brad L; Orrison, William W

    2011-06-01

    Clinical indications and utilization patterns for 3963 CT scans on 2500 consecutive patents on a 320-detector row CT in an outpatient setting were retrospectively analyzed and compared with previously reported CT studies. The impact of the latest generation CT technology, including whole organ perfusion, on indications and utilization patterns during the study period was also assessed. The top five requested CT scan types were abdomen/pelvis, chest, head, sinuses, and coronary CT angiography. Indication and utilization rates were similar to prior studies for abdomen/pelvis, non-cardiac chest, and head CT scans. Abdominal pain and headaches were the most frequent indications for abdomen/pelvis and head CTs, respectively. The 7.3% cardiac CT scan utilization rate was not comparable to rates of up to 72% in self-referral outpatient settings. Whole organ volume CT imaging was utilized in 100% of coronary CT angiography and 22.7% of head CTs. The 320-row CT had fewer negative head and body CT findings as compared to prior reports. The availability of new technology, such as whole organ dynamic scans, appears to have influenced CT indications, utilization and finding rates with a decrease in negative brain and body results. Comparisons with previous outpatient CT studies were similar for multiple categories with the exception of cardiac CT utilization, which is heavily influenced by self-referral. Further study of outpatient imaging indications and utilization rates from multiple centers may benefit from a standardized categorization to improve understanding of the disparate outpatient imaging environment. PMID:21371859

  7. Prognostic Value of Coronary Computed Tomography (CT) Angiography and Coronary Artery Calcium Score Performed Before Revascularization

    PubMed Central

    Fujimoto, Shinichiro; Kondo, Takeshi; Kumamaru, Kanako K; Shinozaki, Tomohiro; Takamura, Kazuhisa; Kawaguchi, Yuko; Matsumori, Rie; Hiki, Makoto; Miyauchi, Katsumi; Daida, Hiroyuki; Rybicki, Frank J

    2015-01-01

    Background Cardiac events after revascularization are equally attributable to recurrence at site of culprit lesions and development of nonculprit lesions. We evaluated the hypothesis that coronary computed tomography (CT) angiography and coronary artery calcium score (CACS) performed before revascularization predicts cardiac events after treatment. Methods and Results Among 2238 consecutive patients without known coronary artery disease who underwent coronary CT angiography and CACS, 359 patients underwent revascularization within 30days after CT; in 337 of 359 (93.9%) follow-up clinical information was available. In addition to known cardiac risk factors, CT findings were evaluated as predictors of cardiac events after revascularization: CACS and the presence of CT-verified high-risk plaque (CT-HRP). Improvement of predictive accuracy by including CT findings was evaluated from a discrimination (Harrells C-statistics) standpoint. During the follow-up period (median: 673, interquartile range: 47 to 1529days), a total of 98 cardiac events occurred. Cox proportional hazard model revealed that age, diabetes, triglyceride, CACS, and nonculprit CT-HRP were significant predictors of overall cardiac events. Although not statistically significant, discriminatory power was greater for the model with CACS (C-stat: 63.2%) and the model with both CACS and CT-HRP (65.8%) compared to the model including neither CACS nor CT-HRP (60.7%). Conclusions High CACS and the presence of nonculprit CT-HRP performed before revascularization are significant predictors of cardiac events after revascularization. PMID:26296858

  8. Unusual Cases of Hypothenar Hammer Syndrome

    PubMed Central

    Arworn, Supapong; Wisetborisut, Anawat

    2015-01-01

    Objective: Hypothenar hammer syndrome (HHS) is a rare occupational disease. The risk group of HHS is patient whose dominate hand used as a hammer. Our study report unusually cases in Chiang Mai University Hospital. Result: 19 year-old basketball player had right ulnar artery aneurysm for two months. After operation, his symptom was relieved and returned to play basketball again. 65 year-old housekeeper had non-dominated hand ulnar artery aneurysm for two years. After operation she still had hand claudication due to poor run-off vessel. Conclusion: HHS is previously state in risk group. But from our report there was a risk in different occupation. PMID:26421080

  9. Unusual rotation modes of minor planetary satellites

    NASA Astrophysics Data System (ADS)

    Mel'Nikov, A. V.; Shevchenko, I. I.

    2007-12-01

    An analysis of the character of the possible dynamics of all hitherto known planetary satellites shows two satellitesAmalthea (J5) and Prometheus (S16)to have the most unusual structure of the phase space of possible rotational motion. These are the only satellites whose phase space of planar rotation may host synchronous resonances of three different kinds: the ? resonance, the ? resonance, and a mode corresponding to the period doubling bifurcation of the ? resonance. We analyze the stability of these states against the tilt of the rotational axis.

  10. Extragingival Pyogenic Granuloma: an Unusual Clinical Presentation.

    PubMed

    Sachdeva, Suresh K

    2015-09-01

    Pyogenic granuloma is thought to represent an exuberant tissue reaction to local irritation. It occurs in second decade of life in young females. Clinically, oral pyogenic granuloma is a smooth or lobulated exophytic growth, pedunculated or sessile, which usually bleeds on provocation. Oral pyogenic granuloma preferentially affects the gingiva. On rare occasion, it can be found extragingivally on lips, tongue, buccal mucosa, and palate which may mimic more serious pathological conditions such as malignancies. This article reports an unusual case of extra gingival pyogenic granuloma occurring on the right buccal mucosa in a female patient and discusses the features that distinguish this lesion from other similar oral mucosal lesions. PMID:26535410

  11. An unusual case of vascular loop syndrome.

    PubMed

    Uluduz, Derya; Karaali-Savrun, Feray; Gunduz, Aysegul; Kiziltan, Meral E

    2007-09-01

    Coexistence of hemifacial spasm (HFS) and trigeminal neuralgia (TN) is a rare entity known as painful tic convulsif (PTC). Here, we present a case of right-sided HFS after which left TN developed, which is an unusual form of PTC. Both disorders were caused by bilateral vascular compression of the cranial nerves and successfully treated with botulinum toxin and carbamazepine. As PTC is benign in nature and can be treated with botulinum toxin, neuroradiological investigations should be performed for an accurate aetiological diagnosis, particularly in young patients with atypical disease manifestations. PMID:17906834

  12. Unusual terpenylated acylphloroglucinols from Dryopteris wallichiana.

    PubMed

    Socolsky, Cecilia; Domnguez, Laura; Asakawa, Yoshinori; Bardn, Alicia

    2012-08-01

    Four unusual terpenylated acylphloroglucinols were isolated from the diethyl ether extract of the scales and rhizomes of the fern Dryopteris wallichiana together with the known compounds albaspidins AA and AB, and filixic acids ABA and ABB. Structures of the isolated compounds were established by extensive spectroscopic analysis and their absolute configuration at C-14? was determined by comparing their CD spectra with those simulated for the respective isomers. Pure acylphloroglucinols displayed moderate in vitro nematocidal activity against L4 stage larvae of Nippostrongylus brasiliensis (LD??=22-121 ?M). PMID:22658282

  13. Cutaneous melioidosis with unusual histological features.

    PubMed

    Yeo, B; Lee, J; Alagappan, U; Pan, J Y

    2016-04-01

    Melioidosis is caused by the saprophytic gram-negative bacillus Burkholderia pseudomallei, and has varied presentations, with cutaneous manifestations occurring in about 13% of cases. The usual histopathological features of melioidosis are suppurative to chronic granulomatous inflammation. Recommended treatment of melioidosis is sequential use of intravenous followed by oral antibiotics for a few months, although oral antibiotics alone can be used in primary cutaneous melioidosis. We report a case of cutaneous melioidosis in a healthy young man, with the unusual histopathological feature of lymphoplasmacytic inflammation, and failing an initial trial of oral antibiotics alone. PMID:26299451

  14. Explaining unusual winter lightning in Japan

    NASA Astrophysics Data System (ADS)

    Shindo, Takatoshi; Ishii, Masaru; Williams, Earle

    2011-11-01

    Third International Symposium on Winter Lightning; Sapporo, Japan, 15-16 June 2011 Japan's meteorological setting in winter is unusual: It is an island in a relatively warm sea frequently overswept by colder air from Siberia. This sets up appreciable atmospheric instability in the fringe of the land adjacent to the Sea of Japan. Heavy snowstorms overlap the edge of the island and produce extraordinarily energetic lightning flashes that initiate from points on the ground (known as ground-to-cloud (GC) strokes) and wreak havoc on power lines and, more recently, wind turbines. These troublesome and costly conditions set the stage for the third in a series of conferences on winter lightning.

  15. Unusual Wrist Tremor: Unilateral Isometric Tremor?

    PubMed Central

    Zesiewicz, Theresa; Vu, Tuan; Carranza, Michael A.; Appelbaum, Rachel; Snyder, Madeline; Staffetti, Joseph S.; Allison, Kevin G.; Shimberg, William R.; Louis, Elan D.

    2014-01-01

    Background Tremors may be difficult to classify. Case Report An 83-year-old male presented with an unusual left wrist tremor. The tremor could be reproducibly elicited by making a fist or carrying a weighted object (e.g., a shopping bag, bottle of water) of approximately 1?lb or more, and it intensified with heavier weights. The tremor was difficult to classify, although it shared features with isometric tremor. Discussion This specific presentation of tremor has not been reported previously. We hope that the detailed description we provide will aid other neurologists who encounter this or similar tremors in their clinics. PMID:24455450

  16. Unusual imaging appearance of unicystic ameloblastoma.

    PubMed

    Nadendla, Lakshmi Kavitha

    2012-10-01

    Unicystic ameloblastoma (UA) refers to those cystic lesions that show clinical, radiographic, or gross features of a mandibular cyst, but on histologic examination show a typical ameloblastous epithelium lining part of the cystic cavity, with or without luminal and/or mural tumor growth. It accounts for 5-15% of all intraosseous ameloblastomas. We report a case of UA in a 35-year-old female with an unusual large multilocular (tennis racket) appearance on the right body of mandible and illustrate the importance and complexity of differential diagnosis with a brief review of recent literature. PMID:23633813

  17. Extragingival Pyogenic Granuloma: an Unusual Clinical Presentation

    PubMed Central

    Sachdeva, Suresh K.

    2015-01-01

    Pyogenic granuloma is thought to represent an exuberant tissue reaction to local irritation. It occurs in second decade of life in young females. Clinically, oral pyogenic granuloma is a smooth or lobulated exophytic growth, pedunculated or sessile, which usually bleeds on provocation. Oral pyogenic granuloma preferentially affects the gingiva. On rare occasion, it can be found extragingivally on lips, tongue, buccal mucosa, and palate which may mimic more serious pathological conditions such as malignancies. This article reports an unusual case of extra gingival pyogenic granuloma occurring on the right buccal mucosa in a female patient and discusses the features that distinguish this lesion from other similar oral mucosal lesions. PMID:26535410

  18. Unusual causes of back pain in athletes.

    PubMed

    Mann, D C; Keene, J S; Drummond, D S

    1991-09-01

    Typical causes of back pain in the athlete include muscle strain, intervertebral disc injury, interspinous bursitis, and spondylolysis. If initial evaluation does not indicate that any of these potential conditions is the cause, the physician or trainer should consider less common conditions. In this report, we discuss the identification and management of five unusual causes of back pain in the high school and college athlete: (a) disc space collapse after herniated disc excision, (b) sacralization of L5, (c) facet fracture of L5, (d) fracture of the lumbar vertebral apophysis, and (e) interosseous herniation of the lumbar disc. PMID:1839364

  19. [Labial adhesions: unusual cause of urinary obstruction].

    PubMed

    Lpez Aramburu, M A; Rosa Arias, J; Pea Prez, P

    2008-01-01

    A case of labial adhesions in an elderly woman is reported. The patient was admitted in the urology department since she related urinary symptoms. The diagnosis was been made by simple inspection of the genital region. Under anaesthesia, surgical procedure was done by sharp dissection, and dressing ointment was recommended at discharge. An excellent result was obtain. The estrogens deficiency seems to be the origin of this rare disease and it is not unusual the presence of another circumstances like lichen sclerous et atrophicus, diabetes mellitus or decreasing sexual activity. PMID:19143298

  20. Unusual esophageal foreign body: a table fork.

    PubMed

    Mevio, Emilio; Mevio, Niccol

    2013-01-01

    The presence of an esophageal foreign body (EFB) is a medical emergency requiring urgent evaluation and treatment. Swallowing of foreign bodies is most common in children aged between 6 months and 6 years, in whom it usually occurs during games. In adults, foreign bodies tend to be ingested accidentally together with food. The authors report an unusual case of EFB (a table fork) in an adult and briefly report the clinical presentation and the therapeutic procedures adopted in this case and similar cases. PMID:23634316

  1. Granular Cell Tumors on Unusual Anatomic Locations

    PubMed Central

    Kim, Hee Joo

    2015-01-01

    Granular cell tumors (GCTs) are soft tissue tumors, which are thought to be derived from Schwann cells. Although most GCTs are reported to arise in tongue and oral cavity (30-50%), they can appear on any anatomic sites, even visceral organs. Herein, we report 5 cases of GCTs on unusual anatomic locations, such as palm, arm, thigh, finger, and vulvar area. Complete surgical excision is preferred treatment of choice to prevent recurrence. These cases emphasize that GCTs not involving oral cavity are more prevalent than expected, and the diagnosis should be histopathologically confirmed. PMID:26446660

  2. An Unusual Course of Metastatic Gastroesophageal Cancer

    PubMed Central

    Smith, William H.; Pintova, Sofya; DiMaio, Christopher J.; Manolas, Panagiotis; Lee, Dong-Seok; Hiotis, Spiros P.; Kartsonis, Maria; Holcombe, Randall F.; Dharmarajan, Kavita V.

    2015-01-01

    We are reporting on a case of a 41-year-old woman who presented with metastatic gastroesophageal junction cancer and who achieved prolonged survival with a multimodal treatment approach. After initially experiencing robust response to chemotherapy, she was treated for distant recurrence with palliative radiation to the gastrohepatic and supraclavicular lymph nodes and subsequently, given her unusual near-complete response, with reirradiation to the abdomen with curative intent for residual disease. The case presented is unique due to the patient's atypical treatment course, including technically difficult reirradiation to the abdomen, and the resulting prolonged survival despite metastatic presentation. PMID:26770853

  3. Use of subsequent PET/CT in diffuse large B-cell lymphoma patients in complete remission following primary therapy

    PubMed Central

    Zhang, Xu; Fan, Wei; Xia, Zhong-Jun; Hu, Ying-Ying; Lin, Xiao-Ping; Zhang, Ya-Rui; Li, Zhi-Ming; Liang, Pei-Yan; Li, Yuan-Hua

    2015-01-01

    Interim 18F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (I-PET/CT) is a powerful tool for monitoring the response to therapy in diffuse large B-cell lymphoma (DLBCL). This retrospective study aimed to determine when and how to use I-PET/CT in DLBCL. A total of 197 patients treated with rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) were enrolled between October 2005 and July 2011; PET/CT was performed at the time of diagnosis (PET/CT0), after 2 and 4 cycles of chemotherapy (PET/CT2 and PET/CT4, respectively), and at the end of treatment (F-PET/CT). According to the International Harmonization Project for Response Criteria in Lymphoma, 110 patients had negative PET/CT2 scans, and 87 had positive PET/CT2 scans. The PET/CT2-negative patients had significantly higher 3-year progression-free survival rate (75.8% vs. 38.2%) and 3-year overall survival rate (93.5% vs. 55.6%) than PET/CT2-positive patients. All PET/CT2-negative patients remained negative at PET/CT4, but 3 were positive at F-PET/CT. Among the 87 PET/CT2-positive patients, 57 remained positive at F-PET/CT, and 32 progressed during chemotherapy (15 at PET/CT4 and 17 at F-PET/CT). Comparing PET/CT4 with PET/CT0, 7 patients exhibited progression, and 8 achieved partial remission. Comparing F-PET/CT with PET/CT0, 10 patients exhibited progression, and 7 achieved partial remission. In conclusion, our results indicate that I-PET/CT should be performed after 2 rather than 4 cycles of immunochemotherapy in DLBCL patients. There is a limited role for subsequent PET/CT in the detection of relapse in PET/CT2-negative patients, but repeat PET/CT is required if the PET/CT2 findings are positive. PMID:25418196

  4. 77 FR 42677 - Special Conditions: General Electric CT7-2E1 Turboshaft Engine

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-20

    ...This action proposes special conditions for the General Electric CT7-2E1 engine model. This engine model will have a novel or unusual design feature which is a combination of two existing ratings into a new rating called ``flat 30-second and 2-minute OEI'' rating. This rating is intended for the continuation of flight of a multi- engine rotorcraft after one engine becomes inoperative. The......

  5. 78 FR 15597 - Special Conditions: GE Aviation CT7-2E1 Turboshaft Engine Model

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-12

    ...These final special conditions are issued for the General Electric Aviation (GE) CT7-2E1 engine model. This engine model will have a novel or unusual design feature, which is a combination of two existing ratings into a new rating called ``flat 30-second and 2-minute OEI'' rating. This rating is intended for the continuation of flight of a multi-engine rotorcraft after one engine becomes......

  6. Group A Escherichia coli-Related Purpura Fulminans: an Unusual Manifestation Due to an Unusual Strain?

    PubMed Central

    Amara, Marlène; Bonacorsi, Stéphane; Bedel, Jérôme; Mira, Jean-Paul; Laurent, Virginie; Socha, Koryna; Bruneel, Fabrice; Pangon, Béatrice; Bédos, Jean-Pierre

    2014-01-01

    We describe an exceptional case of life-threatening group A Escherichia coli-induced purpura fulminans. Genotyping of common polymorphisms in genes involved in innate immunity or coagulation did not reveal known susceptibility to such a manifestation. Genetic analysis of the strain revealed an unusual conserved virulence plasmidic region, pointing out its potential virulence. PMID:25232165

  7. Group A Escherichia coli-related purpura fulminans: an unusual manifestation due to an unusual strain?

    PubMed

    Amara, Marlne; Bonacorsi, Stphane; Bedel, Jrme; Mira, Jean-Paul; Laurent, Virginie; Socha, Koryna; Bruneel, Fabrice; Pangon, Batrice; Bdos, Jean-Pierre; Grimaldi, David

    2014-12-01

    We describe an exceptional case of life-threatening group A Escherichia coli-induced purpura fulminans. Genotyping of common polymorphisms in genes involved in innate immunity or coagulation did not reveal known susceptibility to such a manifestation. Genetic analysis of the strain revealed an unusual conserved virulence plasmidic region, pointing out its potential virulence. PMID:25232165

  8. Exposure to unusually high indoor radon levels

    SciTech Connect

    Rasheed, F.N. )

    1993-03-27

    Unusually high indoor radon concentrations were reported in a small village in western Tyrol, Austria. The authors have measured the seasonal course of indoor radon concentrations in 390 houses of this village. 71% of houses in winter and 33% in summer, showed radon values on the ground floor above the Austrian action level of 400 Bq/cm[sup 3]. This proportion results in an unusually high indoor radon exposure of the population. The radon source was an 8,700-year-old rock slide of granite gneiss, the largest of the alpine crystalline rocks. It has a strong emanating power because its rocks are heavily fractured and show a slightly increased uranium content. Previous reports show increased lung cancer mortality, myeloid leukemia, kidney cancer, melanoma, and prostate cancer resulting from indoor radon exposure. However, many studies fail to provide accurate information on indoor radon concentrations, classifying them merely as low, intermediate, and high, or they record only minor increases in indoor radon concentrations. Mortality data for 1970-91 were used to calculate age and sex standardized mortality rates (SMR) for 51 sites of carcinoma. The total population of Tyrol were controls. A significantly higher risk was recorded for lung cancer. The high SMR for lung cancer in female subjects is especially striking. Because the numbers were low for the other cancer sites, these were combined in one group to calculate the SMR. No significant increase in SMR was found for this group.

  9. Unusual Non-Occupational Exposure to Metals

    PubMed Central

    Wrbitzky, Renate

    2003-01-01

    Exposure to metals at workplaces is well known and in many cases occupational studies led to an adoption of limit values. For airborne concentrations of substances as metals refer to the “Maximaleo Arbeitsplatz-Konzentration” (MAK) in Germany or the “Threshold Limit Value” (TLV) in USA. Biological monitoring consists of an assessment of overall exposure to chemicals at the workplace and in the environment. The “Biologischer Arbeitsstoff Toleranzwert” (BAT) in Germany and the “Biological Exposure Index” in the USA serve as reference values. Besides these occupational limit values, reference values exist in Germany for the background exposure of the non occupationally exposed general population. In some cases the reference values are exceeded without any occupational exposure. Several cases of unusual environmental exposure to cobalt, mercury and manganese are reported. In such cases, it is often difficult to evaluate the measured concentration. In Germany, therefore, the “Human-Biomonitoring-Werte” (HBMValues) have been adopted in order to evaluate such high background exposures. The HBM-concept is presented. Environmental exposure to metals is usual within some limits. Reference values are helpful for an assessment. Unusual exposure occurs and the physician should be alert to symptoms of poisoning. PMID:18365042

  10. Ileocaecal Intussusception with a Lead Point: Unusual MDCT Findings of Active Crohn's Disease Involving the Appendix

    PubMed Central

    Ozan, Ebru; Atac, Gokce Kaan; Akincioglu, Egemen; Keskin, Mete; Gulpinar, Kamil

    2015-01-01

    Adult intussusception is a rare entity accounting for 1% of all bowel obstructions. Unlike intussusceptions in children, which are idiopathic in 90% of cases, adult intussusceptions have an identifiable cause (lead point) in the majority of cases. Crohn's disease (CD) may affect any part of the gastrointestinal tract, including the appendix. It was shown to be a predisposing factor for intussusception. Here, we report a rare case of adult intussusception with a lead point, emphasizing diagnostic input of multidetector computed tomography (MDCT) in a patient with active CD that involves the appendix. PMID:26558130

  11. FINFISH HEALTH IN THE UNITED STATES (1797 TO 1920): PIONEERING INVESTIGATORS, EARLY FINDINGS AND UNUSUAL TREATMENTS

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Several notable men set the stage for the development and growth of fish health in the United States including: White House surveyor, Benjamin H. Latrobe, world renowned physician and naturalist, Joseph P. Leidy, essayist, poet, and philosopher, Henry D. Thoreau, clergyman and premier fish culturist...

  12. Fibrous Pseudotumor of the Penis – An Unusual Finding During Repair of Fractured Penis*

    PubMed Central

    Nalavenkata, Sunny; Winter, Matthew; Pickett, Justine; Dias, Maxwell; Chalasani, Venu

    2014-01-01

    Fibrous pseudotumors of the testis and penis are a rare phenomenon, forming a spectrum of heterogeneous lesions. To the best of our knowledge, there has been only 1 previous report arising from the penis. We present a case of fibrous pseudotumor of the penis, incidentally found during the surgical repair of a fractured penis. These benign lesions have been described in the literature and are most commonly referred to as pseudotumors. They should be distinguished from potentially malignant lesions, including fibrosarcomas, squamous cell carcinoma, and polypoid urothelial carcinoma. Being aware of this pathology is important to prevent unnecessary radical surgery.

  13. Unusual optical coherence tomography and fundus autofluorescence findings of eclipse retinopathy.

    PubMed

    Li, Kun-Hsien; Chen, San-Ni; Hwang, Jiunn-Feng; Lin, Chun-Ju

    2012-01-01

    A 63-year-old female patient complained of dimness in the central field of vision in the left eye after viewing an annular partial eclipse without adequate eye protection on 22 July 2009. Fundoscopy showed a wrinkled macular surface. Fundus autofluorescence study revealed well-demarcated hyperautofluorescence at the fovea. Optical coherence tomography demonstrated tiny intraretinal cysts. Fluorescein angiography and indocyanine green angiography were unremarkable. Epimacular membrane developed in the following month with deteriorated vision. Vitrectomy, epiretinal membrane and internal limiting membrane peeling were performed. Vision was restored to 20/20 after the operation. Direct sun-gazing may damage the retinal structures resulting in macular inflammation and increased focal metabolism, which explains the hyperautofluorescence. It may also induce epimacular membrane. Fundus autofluorescence might represent a useful technique to detect subtle solar-induced injuries of the retina. The visual prognosis is favorable but prevention remains the mainstay of treatment. Public health education is mandatory in reducing visual morbidity. PMID:23202400

  14. Severe dilated cardiomyopathy as an unusual finding in a young infant with mucolipidosis type 2

    PubMed Central

    Mueller, P; Moeckel, A; Daehnert, I

    2006-01-01

    A neonate presented with mucopolysaccharidosis-like phenotypic expression and typical signs of dysostosis multiplex but without urinary excretion of glycosaminoglycans. Investigations of lysosomal enzymes in cultured fibroblasts revealed a mucolipidosis type 2, known as I-cell disease. We describe the fatal course of the patient due to complications of an uncommon dilated cardiomyopathy in this rare disease and discuss the pathogenesis. PMID:22368665

  15. Cleidocranial dysplasia syndrome (CCD) with an unusual finding in a young patient.

    PubMed

    Singhal, Parul; Singhal, Anita; Jayam, Cheranjeevi; Bandlapalli, Anila

    2015-01-01

    Cleidocranial dysplasia (CCD), an autosomal dominant disorder with a prevalence of 1 in 1,000,000 individuals, presents with a wide range of variability. Dentists are often the first to encounter patients with CCD, some of whom do not show typical manifestations. Since it has similar features to other pathologies, CCD is misdiagnosed as other conditions. A 10-year-old boy suffering from CCD was misdiagnosed as having rickets and was referred for non-eruption of a few permanent teeth along with an unaesthetic facial appearance. Clinically and radiologically, a diagnosis of CCD was made. Currently, management of this patient's orofacial manifestations is underway. PMID:26581700

  16. CT evaluation of intracholecystic bile

    SciTech Connect

    Rebner, M.; Ruggieri, P.M.; Gross, B.H.; Glazer, G.M.

    1985-08-01

    Computed tomography (CT) has been used to detect a variety of gallbladder abnormalities, but the accuracy of routine abdominal CT in evaluating intracholecystic bile has not been established. Forty-six patients were identified in whom abdominal CT and sonography were performed within 1 week of each other. Using sonographic results as the standard, sensitivity specificity, and accuracy of CT gallbladder evaluation were calculated; both initial CT interpretations and retrospective review of scans were used for this analysis. In the retrospective review, visual interpretation of gallbladder images and measurement of intracholecystic bile attenuation were analyzed. The most common cause of high-attenuation bile in the series was sludge, a cause not previously reported. It was concluded that intracholecystic bile is poorly evaluated on routine abdominal CT, particularly because of low sensitivity in disease detection.

  17. Chest CT Features of North American Paragonimiasis

    PubMed Central

    Henry, Travis S.; Lane, Michael A.; Weil, Gary J.; Bailey, Thomas C.; Bhalla, Sanjeev

    2013-01-01

    OBJECTIVE The purpose of this study was to characterize the chest CT findings of North American paragonimiasis due to Paragonimus kellicotti in the largest (to our knowledge) case series reported to date and to compare the findings with those reported for paragonimiasis infections in other regions. MATERIALS AND METHODS A retrospective review was performed of chest CT examinations of eight patients with North American paragonimiasis treated at our institution between 2006 and 2010. Findings were characterized by site of involvement, including lungs and pleura, heart and pericardium, lymph nodes, and upper abdomen. RESULTS The most common chest CT findings in this case series were pleural effusions and internal mammary and cardiophrenic lymphadenopathy. Pulmonary parenchymal findings included peripheral lung nodules of 1–3.5 cm in size with surrounding ground-glass opacity; many nodules had a linear track to the pleural surface that may correspond to the worm’s burrow tunnel. Pericardial involvement (5/8 patients) and omental inflammation (5/7 patients), which are uncommon in Asian paragonimiasis, were common in this series. CONCLUSION Pleural and pulmonary features of North American paragonimiasis are generally similar to those reported from Asia. The presence of a track between a pulmonary nodule and the pleura may help distinguish paragonimiasis from mimickers, including chronic eosinophilic pneumonia, tuberculosis, fungal infection, or malignancy. Pericarditis, lymphadenopathy, and omental inflammation were more common in our series than in reports on paragonimiasis from other regions. These differences may be related to the infecting parasite species or to the fact that radiologic examinations in the present series were performed relatively early in the course of infection. PMID:22528896

  18. CT artifacts in virtual colonoscopy

    NASA Astrophysics Data System (ADS)

    Whiting, Bruce R.; McFarland, Elizabeth G.; Dellabarca, Casey; Brunsden, Barry S.

    1999-05-01

    A phantom representation of typical colon structures with precisely known geometrical measurements was designed and fabricated. Computed tomography (CT) data were collected using a range of protocols typical for spiral CT colonography. Analysis methods were developed to measure the acquired geometry of the phantom data and characterize distortions/degradation. Simple models were proposed to explain the trends in degradation in the acquisition process versus scanner protocol. Preliminary results indicate that degradation due to CT acquisition will not significantly impact the detection of clinically relevant lesions (dimensions greater than 1 cm). However, the CT acquisition process does place a lower limit on detection size of several millimeters.

  19. Chronic osteomyelitis examined by CT

    SciTech Connect

    Wing, V.W.; Jeffrey, R.B. Jr.; Federle, M.P.; Helms, C.A.; Trafton, P.

    1985-01-01

    CT examination of 25 patients who had acute exacerbations of chronic osteomyelitis allowed for the correct identification of single or multiple sequestra in 14 surgical patients. Plain radiographs were equivocal for sequestra in seven of these patients, because the sequestra were too small or because diffuse bony sclerosis was present. CT also demonstrated a foreign body and five soft tissue abscesses not suspected on the basis of plain radiographs. CT studies, which helped guide the operative approach, were also useful in treating those patients whose plain radiographs were positive for sequestra. The authors review the potential role of CT in evaluating patients with chronic osteomyelitis.

  20. CT of malignant pleural mesothelioma

    SciTech Connect

    Mirvis, S.; Dutcher, J.P.; Haney, P.J.; Whitley, N.O.; Aisner, J.

    1983-04-01

    The CT scans, plain films, and clinical courses of nine patients with malignant pleural mesothelioma were reviewed to assess the value of computed tomography (CT) in the initial evalation and follow-up of this malignancy. The initial pretreatment scans showed a typical lobulated rind of pleural tumor encasing the lung associated with variable amounts of pleural fluid. Local invasion of the mediastinum, pericardium, diaphragm, and contralateral thorax were well depicted on CT; unsuspected abdominal extension of tumor was demonstrated on CT scans of five patients. Serial scans during treatment provided objective evidence of either regression or growth of tumor mass, even when the patients' clinical status and plain films appeared stable.