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https://www.readbyqxmd.com/read/27911236/patient-versus-physician-reported-facial-disability-in-vestibular-schwannoma-an-international-cross-sectional-study
#1
Øystein Vesterli Tveiten, Matthew L Carlson, Frederik Goplen, Erling Myrseth, Colin L W Driscoll, Rupavathana Mahesparan, Michael J Link, Morten Lund-Johansen
OBJECTIVE Patient-reported outcomes are increasingly used in studies of vestibular schwannoma (VS); however, few studies have examined self-evaluated facial nerve function and its relation to physician-reported outcomes. The primary objective of this study was to compare patient self-evaluations of facial disability with physician-evaluated facial nerve status and with self-evaluations of a healthy control group. The second objective was to provide insight into the controversial subject of the optimal initial management of small- and medium-sized VSs; consequently, the authors compared patient-reported facial nerve disability following treatment via observation (OBS), Gamma Knife surgery (GKS), or microsurgery (MS)...
December 2, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27905190/the-diagnostic-accuracy-of-non-imaging-screening-protocols-for-vestibular-schwannoma-in-patients-with-asymmetrical-hearing-loss-and-or-unilateral-audiovestibular-dysfunction-a-diagnostic-review-and-meta-analysis
#2
M Hentschel, M Scholte, S Steens, H Kunst, M Rovers
BACKGROUND: Currently, all patients presenting with asymmetrical sensorineural hearing loss and/or unilateral audiovestibular dysfunction (i.e. tinnitus, dizziness) undergo MRI, leading to a substantial amount of MRIs with negative findings as the incidence of vestibular schwannoma (VS) in this screening population varies between 1% and 4.7% (i.e. more than 95% of MRIs are negative for VS). OBJECTIVE OF REVIEW: The aim was to assess the diagnostic accuracy of different non-imaging screening protocols that can be used prior to MRI to select patients at high risk of VS...
November 5, 2016: Clinical Otolaryngology
https://www.readbyqxmd.com/read/27903187/stereotactic-diffusion-tensor-imaging-tractography-for-gamma-knife-radiosurgery
#3
Cormac G Gavin, H Ian Sabin
OBJECTIVE The integration of modern neuroimaging into treatment planning has increased the therapeutic potential and safety of stereotactic radiosurgery. The authors report their method of integrating stereotactic diffusion tensor imaging (DTI) tractography into conventional treatment planning for Gamma Knife radiosurgery (GKRS). The aim of this study was to demonstrate the feasibility of this technique and to address some of the technical limitations of previously reported techniques. METHODS Twenty patients who underwent GKRS composed the study cohort...
December 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27903185/acute-clinical-adverse-radiation-effects-after-gamma-knife-surgery-for-vestibular-schwannomas
#4
Constantin Tuleasca, Mercy George, Mohamed Faouzi, Luis Schiappacasse, Henri-Arthur Leroy, Michele Zeverino, Roy Thomas Daniel, Raphael Maire, Marc Levivier
OBJECTIVE Vestibular schwannomas (VSs) represent a common indication of Gamma Knife surgery (GKS). While most studies focus on the long-term morbidity and adverse radiation effects (AREs), none describe the acute clinical AREs that might appear on a short-term basis. These types of events are investigated, and their incidence, type, and outcomes are reported in the present paper. METHODS The included patients were treated between July 2010 and March 2016, underwent at least 6 months of follow-up, and presented with a disabling symptom during the first 6 months after GKS that affected their quality of life...
December 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27903183/stereotactic-radiosurgery-for-vestibular-schwannomas-average-10-year-follow-up-results-focusing-on-long-term-hearing-preservation
#5
Shinya Watanabe, Masaaki Yamamoto, Takuya Kawabe, Takao Koiso, Tetsuya Yamamoto, Akira Matsumura, Hidetoshi Kasuya
OBJECTIVE The aim of this study was to reappraise long-term treatment outcomes of stereotactic radiosurgery (SRS) for vestibular schwannomas (VSs). The authors used a database that included patients who underwent SRS with a unique dose-planning technique, i.e., partial tumor coverage designed to avoid excess irradiation of the facial and cochlear nerves, focusing on tumor control and hearing preservation. Clinical factors associated with post-SRS tumor control and long-term hearing preservation were also analyzed...
December 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27903178/worldwide-variance-in-the-potential-utilization-of-gamma-knife-radiosurgery
#6
Travis Hamilton, L Dade Lunsford
OBJECTIVE The role of Gamma Knife radiosurgery (GKRS) has expanded worldwide during the past 3 decades. The authors sought to evaluate whether experienced users vary in their estimate of its potential use. METHODS Sixty-six current Gamma Knife users from 24 countries responded to an electronic survey. They estimated the potential role of GKRS for benign and malignant tumors, vascular malformations, and functional disorders. These estimates were compared with published disease epidemiological statistics and the 2014 use reports provided by the Leksell Gamma Knife Society (16,750 cases)...
December 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27903019/osteochondroma-presenting-as-a-calcified-mass-in-the-sellar-region-and-review-of-the-literature
#7
Kazuya Sekiguchi, Satoshi Tsutsumi, Sho Arai, Senshu Nonaka, Takamoto Suzuki, Hisato Ishii, Hiroshi Izumi, Yukimasa Yasumoto
Objective Osteochondroma (OC) is the most common benign bone neoplasm. It infrequently occurs in the cranial cavity as a calcified lesion and very rarely presents in the sellar region. The present study summarizes the knowledge about OCs of the sellar region. Methods We searched the literature search for the clinical appearance of OCs and other calcified pathologies occurring in the sellar region. Results A total of 21 English-language articles published from 1961 to 2015 documented cases of calcified lesions in the sellar region including cerebral aneurysm, chondroid chordoma, chondroma, craniopharyngioma, OC, odontome, osteoma, pituitary adenoma, pituitary stone, Rathke cleft cyst, retinoblastoma, schwannoma, and xanthogranuloma...
November 30, 2016: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/27900489/an-association-of-peripheral-nerve-sheath-tumors-and-lipomas
#8
Mohamed A Elsherif, Dusica Babovic-Vuksanovic, Robert J Spinner
BACKGROUND: We noticed the coexistence of peripheral nerve sheath tumors (PNST) with lipomas within a subgroup of our patients. Given the prevalence of lipomas in the general population, we sought to investigate the extent of coexistence of the two entities aiming at uncovering any plausible association between both. METHODS: A retrospective review of all peripheral nerve sheath tumors (sporadic and syndromic forms) treated by a single surgeon between January 2009 and August 2015 was done...
November 30, 2016: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27900226/laparoscopic-extirpation-of-a-schwannoma-in-the-lateral-pelvic-space
#9
Eiji Hidaka, Yasuhiro Ishiyama, Chiyo Maeda, Kenta Nakahara, Shoji Shimada, Shumpei Mukai, Naruhiko Sawada, Fumio Ishida, Shin-Ei Kudo
Schwannomas in the lateral pelvic space are very rare. Here, we report the case of a 48-year-old woman who had a tumor detected in her abdomen by abdominal ultrasonography. Abdominal computed tomography and magnetic resonance imaging revealed a well-defined solid tumor of 65 mm in diameter in the right lateral pelvic space. We performed laparoscopic surgery under a diagnosis of a gastrointestinal tumor or neurogenic tumor. The tumor was safely dissected and freed from the surrounding tissues using sharp and blunt maneuvers...
2016: Case Reports in Surgery
https://www.readbyqxmd.com/read/27899468/favorable-swallowing-outcomes-following-vagus-nerve-sacrifice-for-vagal-schwannoma-resection
#10
Mira A Patel, Danielle F Eytan, Justin Bishop, Joseph A Califano
OBJECTIVE: To determine the impact of unilateral vagal sacrifice for vagal schwannoma on postoperative swallowing function. STUDY DESIGN: Case series, chart review. SETTING: Academic medical institution. SUBJECTS AND METHODS: Ten patients underwent vagus nerve sacrifice for vagal schwannoma resection. Archived pathology records dating from 1985 through 2012 at our institution were retrospectively queried for cases of vagal schwannoma with vagus nerve sacrifice...
November 29, 2016: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/27898606/facial-nerve-meningioma-a-cause-of-pediatric-facial-weakness
#11
Nicholas L Deep, Sharon H Gnagi, David F Carpentieri, P David Adelson, Peter A Weisskopf
OBJECTIVE: To present an unusual case of a temporal bone meningioma with intrafascicular spread throughout the temporal facial nerve from cerebellopontine angle (CPA) to stylomastoid foramen. PATIENT: Four-year-old female with progressive facial weakness and normal hearing. MAIN OUTCOME MEASURE: Clinical, radiological, and histopathological findings of temporal bone meningiomas. RESULTS: A patient presented with progressive facial weakness and normal hearing...
November 24, 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/27891410/subperiosteal-schwannoma-of-pelvis-a-rare-case-and-review-of-literature
#12
Devendra Lakhotia, Sunil Jeph, Swati Sharma
Schwannoma are benign tumours of the nerve sheath. They are commonly found in the soft tissue, but its presence in the bone is extremely rare. We herein present a case of 34-year-old man with two adjacent pelvic subperiosteal schwannomas. Computed Tomography (CT) scan showed osseous pressure erosion and Magnetic Resonance Imaging (MRI) showed two cystic signal intensity lesions, one near superior aspect of right posterior iliac wing and another inferior to it with adjacent cortical pressure erosion. The tumour was excised en bloc and on histopathological examination, the diagnosis was confirmed as subperiosteal schwannoma...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27890767/implications-of-vestibular-schwannoma-consistency-analysis-of-140-cases-regarding-radiological-and-clinical-features
#13
Ahmed R Rizk, Abbas Adam, Isabel Gugel, Jens Schittenhelm, Marcos Tatagiba, Florian H Ebner
OBJECTIVE: To evaluate the effects of vestibular schwannoma (VS) consistency on internal auditory canal (IAC) widening, MRI-appearance, presenting symptoms and facial nerve outcome. MATERIAL AND METHODS: We performed a retrospective analysis of 140 consecutive patients presenting with unilateral VS who underwent surgical treatment in our Department. Operative videos were analyzed, and the tumors were classified into soft and firm according to the resectability with the ultrasonic aspirator at 40% power...
November 24, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27889019/extraparenchymal-lesions-in-pediatric-patients
#14
REVIEW
Mary Tenenbaum
Extraparenchymal lesions of childhood include neoplastic and nonneoplastic entities. Lesions affecting children are different from the most common entities affecting adults. Although there are imaging features that are highly suggestive of extraparenchymal origin, it can be difficult to distinguish extraparenchymal from intraparenchymal lesions. MR imaging is the examination of choice for the evaluation of extraparenchymal lesions given greater sensitivity and anatomic detail. Syndromic associations should be considered, especially for unusual lesions in the pediatric age group such as meningioma and schwannoma...
February 2017: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/27885955/editorial-vestibular-schwannoma-radiosurgery-progression-or-pseudoprogression
#15
Jean Régis, Christine Delsanti, Pierre-Hugues Roche
No abstract text is available yet for this article.
November 25, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27885952/pretreatment-growth-rate-as-a-predictor-of-tumor-control-following-gamma-knife-radiosurgery-for-sporadic-vestibular-schwannoma
#16
Alexander P Marston, Jeffrey T Jacob, Matthew L Carlson, Bruce E Pollock, Colin L W Driscoll, Michael J Link
OBJECTIVE Over the last 30 years, stereotactic radiosurgery (SRS) has become an established noninvasive treatment alternative for small- to medium-sized vestibular schwannoma (VS). This study aims to further define long-term SRS tumor control in patients with documented pretreatment tumor growth for whom conservative observation failed. METHODS A prospective clinical database was queried, and patients with sporadic VS who elected initial observation and subsequently underwent SRS after documented tumor growth between 2004 and 2014 were identified...
November 25, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27885877/surgical-outcomes-of-middle-fossa-approach-in-intracanalicular-vestibular-schwannoma
#17
Woo Seok Kang, Shin Ae Kim, Chan Joo Yang, Sung Hoon Nam, Jong Woo Chung
CONCLUSION: Middle fossa approach (MFA) shows a hearing preservation rate of 86% and facial nerve function was preserved with HB grade I or II in 93%. MFA is a good treatment option for intra-canalicular vestibular schwannomas when surgical excision is needed. BACKGROUND: Surgical outcomes of vestibular schwannoma have progressively improved with the advancement of microsurgical instruments. MFA is known to have better chances to preserve hearing, while it has limited access to the posterior fossa, limitation of tumor size, and higher risk of post-operative facial nerve weakness...
November 25, 2016: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/27882903/results-of-hemihypoglossal-facial-nerve-anastomosis-in-the-treatment-of-facial-nerve-paralysis-after-failed-stereotactic-radiosurgery-for-vestibular-schwannoma
#18
Tomasz A Dziedzic, Przemysław Kunert, Andrzej Marchel
Vestibular schwannoma treatment with stereotactic radiosurgery (SRS) carries a risk of facial nerve (CNVII) palsy that is lower than that with microneurosurgery. The results of hemihypoglossal-facial nerve anastomosis (HHFA) have not been described yet in CNVII palsy after failed stereotactic radiosurgery (SRS). Here we report a case series of the first four consecutive patients (three women; average age 58.5, age range: 46-74), who underwent HHFA due to failed SRS. All patients were admitted because of progressive peripheral facial nerve palsy...
April 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/27882725/analysis-of-risk-factors-to-predict-communicating-hydrocephalus-following-gamma-knife-radiosurgery-for-intracranial-schwannoma
#19
Seunghoon Lee, Seong-Wook Seo, Juyoung Hwang, Ho Jun Seol, Do-Hyun Nam, Jung-Il Lee, Doo-Sik Kong
Communicating hydrocephalus (HCP) in vestibular schwannomas (VS) after gamma knife radiosurgery (GKRS) has been reported in the literature. However, little information about its incidence and risk factors after GKRS for intracranial schwannomas is yet available. The objective of this study was to identify the incidence and risk factors for developing communicating HCP after GKRS for intracranial schwannomas. We retrospectively reviewed a total of 702 patients with intracranial schwannomas who were treated with GKRS between January 2002 and December 2015...
November 23, 2016: Cancer Medicine
https://www.readbyqxmd.com/read/27882056/pediatric-isolated-sinonasal-schwannoma-a-new-case-report-and-literature-review
#20
Xiao-Hui Ma, Hai-Chun Zhou, Can Lai, Kun Zhu, Xuan Jia
Schwannomas of the paranasal sinus are uncommon. Less than 4% of schwannomas involve the nasal cavity and paranasal sinuses, even less in the pediatric age group. A case of schwannoma arising in maxillary sinus in a 2.5-year-old Chinese boy is reported. The basis for discussion of this case is the exceptional rarity of sinonasal schwannoma in pediatric patients.
2016: Case Reports in Medicine
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