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trigeminal schwannoma

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https://www.readbyqxmd.com/read/29747249/-the-surgical-management-of-nasal-skull-base-schwannoma-under-endonasal-endoscope-a-retrospective-review-of-52-cases
#1
L Yang, W D Zhao, Q Liu, H K Zhang, D H Wang
Objective: To discuss the surgical technique and outcome of nasal skull base schwannoma treated under endonasal endoscope. Methods: Fifty-two patients with nasal skull base nonvestibular schwannoma were treated under endonasal endoscope from May 2006 to June 2017 in Shanghai E&ENT Hospital. Of the patients, there were 21 men and 31 women. The age of the patients ranged from 33 to 71 years.Schwannoma mainly came from trigeminal nerve.Clinical symptoms included facial numbness, facial pain, nasal obstruction, headache, hypopsia, diplopia and tinnitus...
April 7, 2018: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/29734937/primary-skull-base-lymphoma-manifestations-and-clinical-outcomes-of-a-great-imitator
#2
John P Marinelli, Mara C Modzeski, John I Lane, Jamie J Van Gompel, Janalee K Stokken, Gita Thanarajasingam, Matthew L Carlson
Objectives Primary skull base lymphoma (PSBL) represents a rare manifestation of extranodal lymphoma. Presenting with nonspecific symptomatology and imaging findings, PSBL often masquerades as more common cranial base pathology and thus can present a diagnostic challenge. The objectives of this study were to characterize the manifestations and clinical outcomes of PSBL. Study Design Case series and chart review. Setting Tertiary referral center. Subjects and Methods Review of 48 patients with PSBL treated between 1994 and 2016...
May 1, 2018: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29725180/rare-cranial-nerve-schwannomas-a-retrospective-review-of-nontrigeminal-nonvestibular-cranial-nerve-schwannomas
#3
Harsh Deora, Dwarakanath Srinivas, Manish Beniwal, V Vikas, K V L N Rao, Sampath Somanna
Introduction: Intracranial schwannomas arising from non-trigeminal and non-vestibular sources are extremely rare constituting <0.8% of all schwannomas. In this article, we have analyzed our experience in the management of these rare tumors over a 10-year period. Material and Methods: There were a total of 16 cases, with 11 of them undergoing microsurgical resection and 5 undergoing stereotactic radiosurgery (SRS). Results: There were no fresh neurological deficit in any of these patients and two patients underwent postoperative SRS for residual tumor...
April 2018: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/29715570/what-tactics-should-a-surgeon-choose-to-treat-a-black-extracerebral-tumor-a-case-report-of-psammomatous-melanotic-schwannoma-of-meckel-s-cave-and-literature-review
#4
Galina I Moisak, Dmitry E Matsko, Sergey V Chernov, Aleksandr B Dmitriev, Mikhail E Amelin, Elena A Zhelbunova, Mikhail F Chernov, Jamil A Rzaev
BACKGROUND: Neoplasms located in Meckel's cave account for 0.2-0.5% of all intracranial tumors. This area is the site of many types of pathological lesions, most often trigeminal nerve schwannomas and meningiomas. Melanin-containing tumors are very rare in this area. These tumor types can be suspected if the MR-characteristics of a tumor has some differences in comparison with other types of central nervous system neoplasms. In fact, differential diagnosis of melanotic tumors is based mainly on the histopathological criteria and immunohistochemical profile...
April 28, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29693472/single-piece-fronto-temporo-orbito-zygomatic-craniotomy-a-personal-experience-and-review-of-surgical-technique
#5
Manish Sharma, Sridhar Shastri
BACKGROUND: Fronto-Temporo-Orbito-Zygomatic (FTOZ) craniotomy has progressed from its humble beginnings. Numerous variations including one piece, two piece and even three piece FTOZ craniotomies have been described. The ideal technique still remains elusive and its use remains restricted to a few specialised centres even when benefits far outweigh the surgical difficulties. OBJECTIVE: To analyse 11 cases in which single piece FTOZ craniotomy was used and to review the steps of surgery along with its advantages...
April 25, 2018: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/29688073/trigeminal-schwannoma-presenting-as-a-gelastic-seizure-no-laughing-matter
#6
Ashwin Kumaria, Harshal A Ingale, Iain J A Robertson, Richard D Ashpole
We present the case of a 66 year old gentleman with trigeminal schwannoma whose only presenting feature was a single gelastic seizure. This is the first case report of pathological laughter in trigeminal schwannoma in the absence of other trigeminal, brainstem, cerebellar or other cranial nerve dysfunction.
April 24, 2018: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/29686918/head-and-neck-schwannomas-a-surgical-challenge-a-series-of-5-cases
#7
Ishtyaque Ansari, Ashfaque Ansari, Arjun Antony Graison, Anuradha J Patil, Hitendra Joshi
Background: Schwannomas, also known as neurilemmomas, are benign peripheral nerve sheath tumors. They originate from any nerve covered with schwann cell sheath. Schwannomas constitute 25-45% of tumors of the head and neck. About 4% of head and neck schwannomas present as a sinonasal schwannoma. Brachial plexus schwannoma constitute only about 5% of schwannomas. Cervical vagal schwannomas constitute about 2-5% of neurogenic tumors. Methods: We present a case series of 5 patients of schwannomas, one arising from the maxillary branch of trigeminal nerve in the maxillary sinus, second arising from the brachial plexus, third arising from the cervical vagus, and two arising from cervical spinal nerves...
2018: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/29669769/nasal-septal-schwannoma-a-rare-sinonasal-tumour-with-certain-peculiarities
#8
K Devaraja, Dipak Ranjan Nayak, Balakrishnan Ramaswamy, Prerit Rao
Sinonasal schwannomas constitute 4% of head and neck nerve sheath tumours; however, schwannomas involving the nasal septum are quite rare. We present a 57-year-old male patient with nasal septal schwannoma who was managed successfully by endoscopic excision. 32 cases of septal schwannoma have been reported so far in the literature. This report discusses certain peculiar features exhibited by schwannomas of the nasal septum. Septal schwannoma does not show any age, sex or side predilection. However, they tend to involve posterior part of the septum and presumed to arise from the nasopalatine branch of the trigeminal nerve...
April 18, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29656000/primary-central-nervous-system-lymphoma-at-the-cerebellopontine-angle-mimicking-a-trigeminal-schwannoma-a-unique-case-report-and-literature-review
#9
Vijay Seevaratnam, Yingda Li, Sun Loong Keegan Lee, Gemma Olsson
Primary central nervous system lymphoma (PCNSL) is an uncommon extranodal manifestation of non-Hodgkin's lymphoma with those presenting at the cerebellopontine angle (CPA) being rare presentations with limited reported cases in the literature. We report a 60-year old female presenting with PCNSL of the left CPA radiologically mimicking a trigeminal schwannoma with corresponding clinical signs. Imaging showed a left CPA lesion that was biopsied and confirmed as diffuse large B-cell lymphoma. Given its rarity, PCNSL should be considered in the differential diagnosis for all CPA tumours...
April 11, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29649644/endoscopic-transseptal-approach-with-a-bilateral-nasoseptal-flap-in-challenging-skull-base-tumors
#10
Do Hyun Kim, Yong-Kil Hong, Sin-Soo Jeun, Jae-Sung Park, Soo Whan Kim, Jin Hee Cho, Yong Jin Park, Sung Won Kim
OBJECTIVE: To examine the utility of an endoscopic transseptal approach and the creation of a bilateral nasoseptal flap using a two-nostrils/four-hands technique in patients with challenging skull-base tumors. METHODS: The medical records of patients operated on via an endoscopic transseptal approach between 2009 and 2017 were retrospectively reviewed. Two patients with ossifying fibroma, two with orbital hemangioma, two with trigeminal nerve schwannoma, and one patient each with juvenile angiofibroma, meningioma, and myxofibrosarcoma were included in the study...
April 9, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29614352/the-place-of-gamma-knife-stereotactic-radiosurgery-in-grade-4-vestibular-schwannoma-based-on-a-case-series-of-86-patients-with-long-term-follow-up
#11
M Lefranc, Leila Maria Da Roz, Anne Balossier, J M Thomassin, P H Roche, J Regis
INTRODUCTION: Grade IV vestibular schwannoma (Koos classification) is generally considered to be an indication for microsurgical resection or combined radiosurgery-microsurgery. However, the place of Gamma knife stereotactic surgery (GK-SRS), either as first-line treatment or when progression of residual tumor compresses the brainstem, has not been clearly evaluated. This article reports the results of a large case series of patients with grade 4 vestibular schwannoma treated by GK-SRS...
March 31, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29492145/single-stage-complete-removal-of-dumbbell-trigeminal-schwannoma-in-a-child-by-skull-base-approach
#12
Ramesh Sharanappa Doddamani, Rajesh Kumar Meena, Selvam Murali Mohan, Neelam Krishnan Venkatramanaa
Trigeminal schwannomas (TSs) are extremely rare tumors in childhood, particularly in the absence of neurofibromatosis. Although multi-staged surgical strategies have been reported in the literature, safe and single stage microsurgical removal is possible. We report a rare case of dumbbell TS, in a 9-year-old girl in whom single stage complete removal was done using fronto-temporo-orbito-zygomatic craniotomy and sub temporal approach.
January 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29477001/microvascular-decompression-for-treatment-of-trigeminal-neuralgia-in-patient-with-facial-nerve-schwannoma
#13
John P Marinelli, Jamie J Van Gompel, Michael J Link, Matthew L Carlson
BACKGROUND: Secondary trigeminal neuralgia (TN) is uncommon. When a space-occupying lesion with mass effect is identified, the associated TN is often exclusively attributed to the tumor. This report illustrates the importance of considering coexistent actionable pathology when surgically treating secondary TN. CASE DESCRIPTION: A 51-year-old woman presented with abrupt-onset TN of the V2 and V3 nerve divisions with hypesthesia. She denied changes in hearing, balance, or facial nerve dysfunction...
May 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29414150/hypo-fractionated-stereotactic-radiotherapy-of-five-fractions-with-linear-accelerator-for-vestibular-schwannomas-a-systematic-review-and-meta-analysis
#14
REVIEW
Thien Nguyen, Courtney Duong, John P Sheppard, Seung Jin Lee, Amar U Kishan, Percy Lee, Stephen Tenn, Robert Chin, Tania B Kaprealian, Isaac Yang
Vestibular schwannomas (VS) are benign tumors stemming from the eighth cranial nerve. Treatment options for VS include conservative management, microsurgery, stereotactic radiosurgery, and fractionated radiotherapy. Though microsurgery has been the standard of care for larger lesions, hypo-fractionated stereotactic radiotherapy (hypo-FSRT) is an emerging modality. However, its clinical efficacy and safety have yet to be established. We conducted a systematic review and meta-analysis of manuscripts indexed in PubMed, Scopus, Web of Science, Embase, and Cochrane databases reporting outcomes of VS cases treated with hypo-FSRT...
March 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29408426/malignant-peripheral-nerve-sheath-tumor-of-the-trigeminal-nerve-involving-the-middle-and-posterior-cranial-fossa
#15
Aijun Liang, Bin Xi, Chaoyang Zhou, Yu Yang, Jianzhong Zhang, Shaogao Gui, Fanghua Xu, Dengfeng Wan
BACKGROUND: Although benign trigeminal schwannomas are uncommon, malignant peripheral nerve sheath tumors (MPNSTs) of the trigeminal nerve are extraordinarily rare. CASE DESCRIPTION: A 56-year-old female presented with a 2-month-long history of numbness of the right face and progressive weakness of the left limbs. Preoperative neuroimages indicated a giant tumor involving the middle and posterior cranial fossa with similar radiologic characteristics to benign trigeminal schwannomas...
April 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29393751/endoscopic-anterior-transmaxillary-transalisphenoid-approach-to-meckel-s-cave-and-the-middle-cranial-fossa-an-anatomical-study-and-clinical-application
#16
Huy Q Truong, Xicai Sun, Emrah Celtikci, Hamid Borghei-Razavi, Eric W Wang, Carl H Snyderman, Paul A Gardner, Juan C Fernandez-Miranda
OBJECTIVE Multiple approaches have been designed to reach the medial middle fossa (for lesions in Meckel's cave, in particular), but an anterior approach through the greater wing of the sphenoid (transalisphenoid) has not been explored. In this study, the authors sought to assess the feasibility of and define the anatomical landmarks for an endoscopic anterior transmaxillary transalisphenoid (EATT) approach to Meckel's cave and the middle cranial fossa. METHODS Endoscopic dissection was performed on 5 cadaver heads injected intravascularly with colored silicone bilaterally to develop the approach and define surgical landmarks...
February 2, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29386819/trigeminal-schwannoma
#17
Aviral Agrawal, Virendra Singh, Seema Rohilla, Bindu Sharma
Schwannoma is a benign tumor of the nerve sheath arising from the perineural schwann cells. The nerves most commonly involved in schwannomas of the head and neck are the vagus and the cervical sympathetic chain. Trigeminal schwannomas are rare tumours. A 17 year old male patient with a chief complaint of swelling on face was diagnosed as suffering from bening tumor extending from cranial base (from foramen ovale) to the parapharengeal space. Mandibular access osteotomy was done to expose the tumor. Surgical excision of the tumor was done along with the preservation of the nerve...
July 2017: National Journal of Maxillofacial Surgery
https://www.readbyqxmd.com/read/29350272/endoscopic-endonasal-approach-for-trigeminal-schwannomas-our-experience-of-39-patients-in-10-years
#18
Lu Yang, Li Hu, Weidong Zhao, Huankang Zhang, Quan Liu, Dehui Wang
BACKGROUND: The anatomical locations involved in trigeminal schwannomas (TSs) are quite complex. The endoscopic endonasal approach provides a minimal damage access corridor to both anterior and middle skull base for surgery. Given the nerve function recovery and postoperative neurological deterioration varied in different reports, the author demonstrates his surgery tips and the functional outcomes under endoscopic surgery in one single institution. METHODS: A retrospective review of patients with TSs was undertaken to assess the outcome of endoscopic surgery from 2006 to 2016...
March 2018: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29344779/trigeminal-neuropathy-in-vestibular-schwannoma-a-treatment-algorithm-to-avoid-long-term-morbidity
#19
Luke Galloway, Nachi Palaniappan, Geoffrey Shone, Caroline Hayhurst
BACKGROUND: Trigeminal neuropathy (TGN) can occur as a presenting feature of vestibular schwannoma (VS) or as an adverse effect of radiosurgery. This study was designed to evaluate a treatment algorithm for presenting symptoms of TGN in patients with VS, and a new radiosurgery dosimetric tolerance to avoid TGN after treatment. Outcome was measured after microsurgery (MS), stereotactic radiosurgery (SRS), hypofractionated stereotactic radiotherapy (HSRT), and fractionated radiotherapy (FRT)...
January 17, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29223524/gamma-knife-stereotactic-radiosurgery-for-nonvestibular-cranial-nerve-schwannomas
#20
Anne-Marie Langlois, Christian Iorio-Morin, Laurence Masson-Côté, David Mathieu
BACKGROUND: Nonvestibular cranial schwannomas represent a rare type of benign intracranial tumor. Few studies have evaluated the use of stereotactic radiosurgery (SRS) as a primary management option for these lesions. We performed a retrospective review of our institution's experience focusing on efficacy with regard to tumor control and clinical symptom stabilization as well as treatment safety. METHODS: Patients were included if they underwent at least 1 SRS procedure for a nonvestibular schwannoma and had at least 6 months of available imaging follow-up...
February 2018: World Neurosurgery
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