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to simulate transsphenoidal endonasal pituitary adenoma surgery. This thesis describes a deformation engine transsphenoidal endonasal pituitary surgery. Its purpose is to remove pituitary adenomas. In this procedure sinus. Then the sellar oor is opened so that the surgeon can reach the pituitary gland and remove
E-print Network
Repair of dural defects following endonasal endoscopic cranial base surgery remains a challenge. A variety of reconstructive techniques have been described, many of which utilize tissue adhesives or glues. One of the main difficulties with the endonasal use of these sealants is the available applicators, which often result in the imprecise and excessive ...
PubMed
Endonasal, endoscopic approaches to the cranial base have undergone significant technique refinement over the past decade. Repair of the resultant defects remains perhaps the most important concern with these approaches; however, recent advances suggest that with careful attention to the closure, these procedures can be done with acceptable rates of morbidity. In this review, ...
BackgroundThe endoscopic endonasal transsphenoidal approach (EETA) to the pituitary is performed by ear, nose, and throat (ENT) surgeons in collaboration with neurosurgeons but also by neurosurgeons alone even though neurosurgeons have not been trained in rhinological surgery.PurposeTo register the frequency of endonasal anatomical variations and to ...
PubMed Central
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DTIC Science & Technology
... MR. CALFEE: Your point is well taken. There are lots of harms and benefits that would not Page 39. ... is that it is pretty soft. But that doesn't - like ...
Center for Drug Evaluation (CDER)
Contents: Scientific progress in Armenia discussed; Birthday of Academician Ambartsumyan observed; Armenian astrophysicist contributes to science; Academician Ambartsumyan is sixty years old; Academician Ambartsumyan's foresight praised; Institute directo...
National Technical Information Service (NTIS)
INTRODUCTION: Dacryocystorhinostomy via an endonasal route has been adopted in our department. This audit study describes and compares our results for external, laser endonasal and 'cold steel' endonasal techniques. Success was defined as a subjective report of eye watering being 'better' or 'cured'. Data were obtained from a ...
Stenosis of the naso-lachrymal duct as a consequence of acute or chronic inflammation, trauma or congenital malformation is a relatively frequent lachrymal duct pathology. The symptoms include epiphora and intermittent tumefaction of the medial ocular canthus, indicative of a deficiency in lachrymal drainage. If such conditions do not respond to medical treatment, lavage and transcanicular probe, ...
Dacryocystorhinostomy (DCR) is indicated in children with persistent nasolacrimal duct obstruction (NLDO). Endoscopic endonasal DCR has been successfully performed in both adults and children, with success rates similar to that of external DCR. This paper aims to evaluate the outcomes of paediatric patients undergoing endonasal endoscopic DCR at a district ...
The endoscopic endonasal trans-sphenoidal approach can decompress the traumatized and swollen optic nerve without brain retraction. Three cases of traumatic optic neuropathy (TON) were treated by this endoscopic approach. We performed 58 endoscopic endonasal trans-sphenoidal approaches in 52 patients between April 2006 and December 2007. Three patients, 2 ...
A high-powered argon blue-green laser coupled to a 300-microns quartz fiberoptic catheter was used to create intranasal dacryocystorhinostomy fistulas in fresh-frozen cadaver heads. The procedure, which we term endonasal laser dacryocystorhinostomy, is described. Cadaver specimens were examined postoperatively. Laser rhinostomies were found to involve the posteroinferior ...
Retrochiasmatic craniopharyngiomas are challenging tumors to remove given their deep location and proximity to critical neurovascular structures. Complete surgical removal offers the best chance of cure and prevention of recurrence. The endoscopic endonasal extended transsphenoidal approach offers direct midline access to the retrochiasmatic space through a transplanum ...
The Department for Safety and Radiation Protection (Abteilung Sicherheit und Strahlenschutz - ASS) is responsible for implementing all tasks in the safety sector, insofar as they are not performed by the following chain of responsibility: Board of Directo...
This monograph documents the ways in which successful local emergency managers improve community preparedness and response, and the ways in which they maintain their agency capability and resource base. Sixty-two local emergency management program directo...
inundaciones 4015 08/18 Louisiana Inundaciones 4014 08/12 Nebraska Tormentas severas, tornados, vientos directos e inundaciones 4013 08/12 Nebraska Inundaciones 4012 08/12 Missouri...
This is the fifth edition of the Directory of Energy Data Collection Forms, an authoritative listing of the public use forms currently used as basic energy information gathering tools by the Department of Energy (DOE). For each form listed in this directo...
... sobre la distribución y la abundancia de los animales puede ser directo, por ... y como alimento para los niveles tróficos mas altos. Los escarabajos que ... ...
NBII National Biological Information Infrastructure
continuación, para evitar el contacto directo con la piel, las membranas mucosas y los ojos. Utilice dos bolsas de plástico invertidas para proteger las manos al recoger el...
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El presente estudio tiene por objeto desarrollar un diagnostico de la inserci�n integrada de la �tica en la carrera de medicina brasile�a con una metodolog�a de aprendizaje basada en problemas y describir las percepciones de actitudes �ticas de los estudiantes y egresados. El dise�o metodol�gico es un estudio de caso, descriptivo y documental, con abordaje ...
Different disorders may produce irreducible atlanto-axial dislocation with compression of the ventral spinal cord. Among the surgical approaches available for a such condition, the transoral resection of the odontoid process is the most often used. The aim of this anatomical study is to demonstrate the possibility of an anterior cervico-medullary decompression through an endoscopic ...
Different techniques have been proposed to repair cerebrospinal fluid rhinorrhea. Advances in nasal surgery led to a high success rate and low morbidity for the endonasal approach. It has become the favorite route for treating cerebrospinal fluid leaks of the anterior skull base. Better results have been obtained with the improvement of rigid endoscopes and intrathecal sodium ...
The main symptoms of chronic obstruction of lacrymal pathways are epiphora and chronic dacryocystitis occurring mostly in elderly women. The aim of the surgery is to perform intranasal drainage of the lacrymal sac. The authors performed 30 dacryocystorhinostomies (DCR) in 26 patients with an intranasal endoscopic approach. 24 DCR with a mean follow-up of 25 months and a success rate of 91.7% after ...
Tuberculum sellae (TS) meningiomas represent a distinct subgroup of anterior cranial fossa meningiomas with distinctive features. Early visual deterioration with optic canal infiltration occurs because of the site of dural origin. The expanded endonasal transsphenoidal approach and the eyebrow supraorbital craniotomy have been advocated as minimally invasive techniques for TS ...
A 37 year old man presented with a 6 month history of a right epiphora with associated mucus discharge. Lacrimal irrigation demonstrated right unilateral partial nasolacrimal duct obstruction, confirmed with lacrimal scintigraphy. Nasal endoscopy showed a pale elevation in the right inferior meatus. Endoscopic endonasal examination revealed a yellow-white nasolacrimal duct ...
Craniopharyngioma is a rare and mostly benign epithelial tumor of the sellar and suprasellar region. Two principal patterns of craniopharyngioma are recognized: papillary and adamantinomatous. Papillary craniopharyngiomas are encountered in adults and may lack the cystic spaces filled with "motor oil" as well as the palisading peripheral rows of epithelial cells, keratinization, or calcification ...
THE DIRECT ENDONASAL transsphenoidal approach to the sella with the operating microscope was initially described more than 20 years ago. Herein, we describe the technique, its evolution, and lessons learned over a 10-year period for treating pituitary adenomas and other parasellar pathology. From July 1998 to January 2008, 812 patients underwent a total of 881 operations for a ...
BACKGROUND:: The endoscopic, endonasal, extended transsphenoidal approach is a minimal access technique for managing craniopharyngiomas. Outcome measures such as return to employment and body mass index (BMI) have not been reported and are necessary for comparison with open transcranial approaches. Most prior reports of the endoscopic, endonasal approach ...
BACKGROUND AND IMPORTANCE: We present a case in which clip ligation of both a ruptured and an unruptured paraclinoidal segment aneurysm is performed with only the endoscopic endonasal approach in 1 setting. CLINICAL PRESENTATION: A 42-year-old woman, a Hunt and Hess grade 2 patient, presented with aneurysmal subarachnoid hemorrhage. An arteriogram revealed an irregular 10-mm ...
A partir de un relevamiento de tipo etnogr�fico, se describen lugares de encuentro de HSH en la Ciudad de Buenos Aires y sus pr�cticas sexuales. El reconocimiento de tales espacios, as� como las caracter�sticas que asumen en ellos los encuentros sexuales entre los HSH, plantean obst�culos espec�ficos en la adopci�n de comportamientos preventivos y, asimismo, generan nuevos desaf�os ...
ResumenA partir de un relevamiento de tipo etnogr�fico, se describen lugares de encuentro de HSH en la Ciudad de Buenos Aires y sus pr�cticas sexuales. El reconocimiento de tales espacios, as� como las caracter�sticas que asumen en ellos los encuentros sexuales entre los HSH, plantean obst�culos espec�ficos en la adopci�n de comportamientos preventivos y, asimismo, generan nuevos ...
Pituitary adenomas with extensive suprasellar extension are a therapeutic challenge. The efficacy and safety of the endoscopic endonasal approach for non-functioning giant pituitary adenoma was evaluated retrospectively. A total of 43 consecutive patients with pituitary adenomas with a suprasellar extension of >20mm underwent tumor resection with a purely endoscopic ...
A 34-year-old male presented with a rare case of Rathke's cleft cyst (RCC) with calcification manifesting as persistent high fever and impaired consciousness. Physical findings revealed panhypopituitarism and bitemporal hemianopsia. Computed tomography showed mass lesions with marked calcification within the sella turcica and the suprasellar region. Magnetic resonance imaging showed solid and ...
A 41-year-old female patient was admitted with streptococcal meningitis on a background of 5-month history of CSF rhinorrhoea. Imaging revealed an extensive skull base lesion involving the sphenoid and ethmoid sinuses, the pituitary fossa with suprasellar extension and bony destruction. Histological examination of an endonasal transethmoidal biopsy suggested a diagnosis of ...
Solitary extramedullary plasmacytomas are isolated plasma cell tumors of soft tissue that typically do not metastasize. They are rare and account for 4% of all plasma cell tumors. To our knowledge, only 14 cases of solitary extramedullary plasmacytomas in the sphenoid sinus have been reported. A 32-year-old man presented to our department with complaint of ocular pain in the right eyeball and ...
Introduction:Dacryoliths are concretions formed in the lacrimal sac from cellular debris and proteins, which may calcify and cause further obstruction of the nasolacrimal pathway. Dacryoliths are often underlying contributors in cases of intermittent or chronic dacryocystitis (i.e. nasolacrimal sac inflammation, characterised by epiphora, pain, erythema, sac dilation and lacrimal punctum ...
We report a Japanese patient with a complaint of unilateral watery nasal discharge. Analysis of the nasal discharge showed it to contain high levels of sugar and transferrin, which indicated cerebrospinal fluid (CSF) rhinorrhea. A diagnosis of sphenoid sinus meningoencephalocele was easily made on the basis of the CT, MRI and nasal discharge findings. We performed surgery by an image-guided ...
PurposeTo compare success rates of external dacryocystorhinostomy (DCR) and endoscopic endonasal DCR for acquired nasolacrimal duct obstruction (NLDO).DesignHistorical cohort study.Participants100 patients who underwent external DCR and 105 patients who underwent endoscopic endonasal DCR.MethodsA retrospective review of medical records of patients with ...
National and international tendencies to avoid nasal packing after FESS are closed related to the surgical surgery (atraumatic endoscopic surgery, avoidance of resection of turbinates, meticulose coagulation). At the end of each operation a benefit-risk-analysis should be performed, whether nasal packing is indicated and which one. In endonasal surgery only those conventional ...
Endonasal sinus surgery requires a great amount of training before it can be adequately performed. The complicated anatomy involved, the proximity of relevant structures, and the variability of the anatomy due to inborn or iatrogenic variations make several complications possible. Today, cadaver dissections are the "gold standard" for surgical training. To overcome the ...
During the past 5 years we have seen 10 patients who had developed sclerosing lipogranuloma of the lid and orbit after endonasal sinus surgery with subsequent ipsilateral monocular haematoma. The histopathological examination of all and the additional nuclear magnetic resonance spectroscopic examination of four surgical specimens in combination with the typical clinical course ...
Aims: To examine the effectiveness of a management protocol for childhood epiphora using a joint ophthalmological and otolaryngological team approach.Method: A temporally defined retrospective study of 70 children (92 eyes) undergoing surgery for persistent epiphora, despite two previous technically successful probing procedures. All the operations involved a joint approach involving a paediatric ...
Background:Cavernous hemangioma are the most common benign lesions of the orbit. Their surgical resection is still challenging and several surgical approaches have been proposed.Case Description:We present the case of a 59-year-old woman with a cavernous hemangioma of the orbital apex, which was diagnosed incidentally. The hemangioma was extraconal and involved mainly the medial orbital apex; it ...
Skull base surgery is evolving from traditional transfacial and transcranial approaches to the endoscopic endonasal approach, a less intrusive corridor for accessing the ventral skull base. This technique eliminates facial scars, expedites recovery, and obviates brain retraction. The goals of surgical excision, whether palliative or curative, are identical: an approach that is ...
The Authors describe a new dynamic endonasal Teflon stent, nick-named "little gun", used after the surgical transnasal endoscopic treatment of bilateral choanal atresia in a 4-day-old male. This Teflon stent, conceived to perfectly fit the new naso-choanal openings and to achieve an "orthopaedic" tutorial function, is made of three portions: "A", the barrel, "B", the breech, ...
SummaryThe Authors describe a new dynamic endonasal Teflon stent, nick-named �little gun�, used after the surgical transnasal endoscopic treatment of bilateral choanal atresia in a 4-day-old male. This Teflon stent, conceived to perfectly fit the new naso-choanal openings and to achieve an �orthopaedic� tutorial function, is made of three portions: �A�, the barrel, ...
of the material. However, it is the best reproduction available from the original submission. .... de los elementos necesarios (antena, equipos ..... California, para asegurar el contacto directo e ... peso total y de altura equivalence a un edificio ... La construccion de esta Instalacion nevo ...
NASA Website
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(UMP) increases brain CD~-choline levels in gerbils Mehmet CanSeVa,b,Carol J. Watkins a, Eline M. van previously showed that supplementing PCI2 cells with uridine caused concentration-related increases in CDP-choline and following UMP, these levels were much lower than those ofuridine. Brain UTP, CTP, and CDP-choline were all
Antarctic Research Centre ANNUAL REVIEW 2009 #12;CoNtENts 2 People 5 scientific Activity 10 #12;Antarctic Research Centre - Annual Review 2009 1 FRoM tHE DIRECtoR The 2009 year presented a number of challenges, but was ultimately another very successful year for the Antarctic Research Centre. The ARC
and endonasal endoscopic skull base surgery 2. Endocrinology in the treatment of thyroid cancer 3. Dermatology-Institutional Phase II Study of Radiation and GW572016 (Lapatinib) for Patients with Stage III-IV Head and Neck Cancer with Solid Tumors (VAR0039) Thyroid Cancer: � An International, Randomized, Double-Blinded, Phase III
In this case report, we describe the presentation and treatment of a patient with nasopharyngeal chondrolipoma. Lipomas are common soft tissue tumours, although their incidence in the nasopharynx is very low. A rarer variant of lipoma, chondrolipomas are benign mesenchymal tumours. They are formed by the proliferation of mature adipocytes and contain different amounts of mature cartilaginous ...
As endoscopic skull base resections have advanced, appropriate reconstruction has become paramount. The reconstructive options for the skull base include both avascular and vascular grafts. We review these and provide an algorithm for endoscopic skull base reconstruction. One hundred and sixty-six skull base dural defects, reconstructed with an endonasal vascular flap, were ...
Angiofibromas are usually characterized by typical location with involvement of the posterior nasal cavity and nasopharynx. They are most commonly found in adolescent males. Despite these facts, a case of an angiofibroma presented in a 15-month-old boy at an atypical site anterior and medial to the lacrimal sac. The tumor was resected via an endonasal, micro-endoscopic ...
BACKGROUND AND IMPORTANCE:: Aneurysms arising from the vertebral and posterior inferior cerebellar artery complex account for only 0.5 to 3% of all aneurysms. Surgery for these aneurysms is technically challenging because of the deep location and intimate relation with the medulla and lower cranial nerves. The authors report the case of a patient with a right vertebral-posterior inferior ...
BACKGROUND:: The anterior communicating artery (AcoA) aneurysm is one of the most challenging aneurysms. As endovascular techniques evolve, a remaining challenge is the reduction of complications related to the surgical approach. Although the endonasal approach is widely used for pituitary adenomas and is increasingly popular for suprasellar tumors, only two aneurysm cases ...
... versi�n del manual es una adaptaci�n y traducci�n de la segunda edici�n de "The Five-S Framework for Site Conservation: A ... relativamente simple, directo y probado para desarrollar estrategias de conser...
Leishmaniasis is an endemic protozoan infection in Sardinia, one of the major islands of the Mediterranean Basin. We report two cases of endonasal primary Leishmaniasis, which is a very rare event in adult men who are immunocompetent, born in, and residents of Sardinia. The diagnosis was confirmed by the presence of intra and extracellular Leishmania amastigotes in the ...
Endoscopic endonasal skull base surgery (ESBS) requires high accuracy to ensure safe navigation of the critical anatomy at the anterior skull base. Current navigation systems provide approximately 2mm accuracy. This level of registration error is due in part from the indirect nature of tracking used. We propose a method to directly track the position of the endoscope using ...
