1
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Libell JL, Balar AB, Libell DP, Joseph JT, Hogg JP, Lakhani DA, Khan M. Facial nerve schwannoma: Case report and brief review of the literature. Radiol Case Rep 2023; 18:3442-3447. [PMID: 37502483 PMCID: PMC10369394 DOI: 10.1016/j.radcr.2023.06.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 07/29/2023] Open
Abstract
Schwannomas are rare nerve sheath tumors that can occur throughout the body, and are symptomatic based on location, size, and impingement on adjacent structures. These tumors are often benign lesions and occur sporadically or from genetic conditions such as neurofibromatosis. Schwannomas may arise from peripheral nerves, gastrointestinal nerves, spinal nerve roots and cranial nerves. Facial nerve schwannomas arise from cranial nerve VII, commonly involving the geniculate ganglion, labyrinthine segment, and internal auditory canal. While small lesions are asymptomatic, larger lesions can cause facial nerve paralysis, and facial spasms. Lesions in the internal auditory canal can cause hearing loss, tinnitus, vertigo, and otalgia. High-resolution CT imaging and MRI imaging are useful for distinguishing between other pathologies that arise from the same region. High-resolution CT scans can show bony degeneration of nearby structures such as the labyrinth or ossicles. MRI imaging shows hypo intensity on T1 imaging, and hyperintensity on T2 imaging. On T1 postcontrast, enhancement can be homogenous or heterogeneous with cystic degeneration if the lesion is large. Nodular enhancement is commonly seen on facial nerve schwannomas within the internal auditory canal. Vestibular schwannomas involving CN VIII are more common, and appear similar to facial nerve schwannomas, but can be distinguished apart due to growth in the geniculate ganglion and/or the labyrinthine segment. Management of asymptomatic or mild lesions is typically conservative with follow up imaging, and surgery for larger lesions. Here, we present a case of a facial nerve schwannoma in a 57-year-old woman.
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Affiliation(s)
- Joshua L. Libell
- School of Medicine, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, USA
| | - Aneri B. Balar
- Department of Radiology, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, USA
| | - David P. Libell
- Department of Neurology, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, USA
| | - Joe T. Joseph
- Department of Radiology, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, USA
| | - Jeffery P. Hogg
- Department of Radiology, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, USA
| | - Dhairya A. Lakhani
- Department of Radiology, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, USA
| | - Musharaf Khan
- Department of Radiology, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, USA
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2
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Yao L, Wang B, Lu F, He X, Lu G, Zhang S. Facial nerve in skullbase tumors: imaging and clinical relevance. Eur J Med Res 2023; 28:121. [PMID: 36918971 PMCID: PMC10012458 DOI: 10.1186/s40001-023-01078-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 02/24/2023] [Indexed: 03/16/2023] Open
Abstract
Facial nerve, the 7th cranial nerve, is a mixed nerve composed of sensory and motor fibers, and its main branch is situated in the cerebellopontine angle. Facial nerve dysfunction is a debilitating phenomenon that can occur in skullbase tumors and Bell's pals. Recovery of the facial nerve dysfunction after surgery for skullbase tumors can be disappointing, but is usually favorable in Bell's palsy. Advances in magnetic resonance imaging (MRI) allow to visualize the facial nerve and its course in the cerebellopontine angle, also when a large tumor is present and compresses the nerve. Here, we describe the anatomical, neurochemical and clinical aspects of the facial nerve and highlight the recent progress in visualizing the facial nerve with MRI.
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Affiliation(s)
- Longping Yao
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.,Department of Neurosurgery, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Baoyan Wang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Fengfei Lu
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Xiaozheng He
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Guohui Lu
- Department of Neurosurgery, First Affiliated Hospital of Nanchang University, Nanchang, China.
| | - Shizhong Zhang
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.
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3
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Bal J, Bruneau M, Berhouma M, Cornelius JF, Cavallo LM, Daniel RT, Froelich S, Jouanneau E, Meling TR, Messerer M, Roche PH, Schroeder HWS, Tatagiba M, Zazpe I, Paraskevopoulos D. Management of non-vestibular schwannomas in adult patients: a systematic review and consensus statement on behalf of the EANS skull base section Part II: Trigeminal and facial nerve schwannomas (CN V, VII). Acta Neurochir (Wien) 2022; 164:299-319. [PMID: 35079891 DOI: 10.1007/s00701-021-05092-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 12/17/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND Non-vestibular schwannomas are relatively rare, with trigeminal and jugular foramen schwannomas being the most common. This is a heterogenous group which requires detailed investigation and careful consideration to management strategy. The optimal management for these tumours remains unclear and there are several controversies. The aim of this paper is to provide insight into the main principles defining management and surgical strategy, in order to formulate a series of recommendations. METHODS A task force was created by the EANS skull base section committee along with its members and other renowned experts in the field to generate recommendations for the surgical management of these tumours on a European perspective. To achieve this, the task force performed an extensive systematic review in this field and had discussions within the group. This article is the second of a three-part series describing non-vestibular schwannomas (V, VII). RESULTS A summary of literature evidence was proposed after discussion within the EANS skull base section. The constituted task force dealt with the practice patterns that exist with respect to pre-operative radiological investigations, ophthalmological assessments, optimal surgical and radiotherapy strategies, and follow-up management. CONCLUSION This article represents the consensually derived opinion of the task force with respect to the treatment of trigeminal and facial schwannoma. The aim of treatment is maximal safe resection with preservation of function. Careful thought is required to select the appropriate surgical approach. Most middle fossa trigeminal schwannoma tumours can be safely accessed by a subtemporal extradural middle fossa approach. The treatment of facial nerve schwannoma remains controversial.
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Affiliation(s)
- Jarnail Bal
- Department of Neurosurgery, Barts Health NHS Trust, St. Bartholomew's and The Royal London Hospital, London, UK
| | - Michael Bruneau
- Department of Neurosurgery, Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Moncef Berhouma
- Neuro-Oncologic and Vascular Department, Hôpital Neurologique Pierre Wertheimer, Lyon, France
| | - Jan F Cornelius
- Department of Neurosurgery, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Luigi M Cavallo
- Department of Neurosurgery, University Hospital of Naples Federico II, Napoli, Italy
| | - Roy T Daniel
- Department of Neurosurgery, Lausanne University Hospital and University of Lausanne, 42 rue du Bugnon, 1011, Lausanne, Switzerland
| | | | - Emmanuel Jouanneau
- Department of Neurosurgery, Hôpital Neurologique Pierre Wertheimer, Lyon, France
| | - Torstein R Meling
- Department of Neurosurgery, University Hospital of Geneva, Geneva, Switzerland
| | - Mahmoud Messerer
- Department of Neurosurgery, Lausanne University Hospital and University of Lausanne, 42 rue du Bugnon, 1011, Lausanne, Switzerland
| | | | - Henry W S Schroeder
- Department of Neurosurgery, University Medicine Greifswald, Greifswald, Germany
| | - Marcos Tatagiba
- Department of Neurosurgery, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Idoya Zazpe
- Department of Neurosurgery, Complejo Hospitalario de Navarra, Pamplona, Spain
| | - Dimitrios Paraskevopoulos
- Department of Neurosurgery, Barts Health NHS Trust, St. Bartholomew's and The Royal London Hospital, London, UK.
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4
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Less common extracerebral tumors. PROGRESS IN BRAIN RESEARCH 2022; 268:279-302. [PMID: 35074086 DOI: 10.1016/bs.pbr.2021.10.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
This chapter examines the results of GKNS on a variety of extraparenchymal skull base tumors some benign and some malignant. For the benign tumors there is good evidence on the effectiveness of the method for pretty much all diagnoses. For malignant extraparenchymal tumors the results are more limited and GKNS only has a supportive role in these lesions.
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5
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Luther E, Kader M, Higgins D, Patel NV, Eichberg DG, Berry K, Wu EM, Morell A, Komotar R, Ivan M. Commentary: Resection of a Dumbbell-Shaped Facial Nerve Schwannoma With Preservation of Facial Nerve Function Through the Extended Middle Fossa Approach: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown) 2021; 21:E532-E533. [PMID: 34560782 DOI: 10.1093/ons/opab358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 08/06/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Evan Luther
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Michael Kader
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Dominique Higgins
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Nitesh V Patel
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Daniel G Eichberg
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Katherine Berry
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Eva M Wu
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Alexis Morell
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Ricardo Komotar
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA.,Sylvester Comprehensive Cancer Center, Miami, Florida, USA
| | - Michael Ivan
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA.,Sylvester Comprehensive Cancer Center, Miami, Florida, USA
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6
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Rotter J, Lu VM, Graffeo CS, Perry A, Driscoll CLW, Pollock BE, Link MJ. Surgery versus radiosurgery for facial nerve schwannoma: a systematic review and meta-analysis of facial nerve function, postoperative complications, and progression. J Neurosurg 2021; 135:542-553. [PMID: 33126214 DOI: 10.3171/2020.6.jns201548] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 06/08/2020] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Intracranial facial nerve schwannomas (FNS) requiring treatment are frequently recommended for surgery or stereotactic radiosurgery (SRS). The objective of this study was to compare facial nerve function outcomes between these two interventions for FNS via a systematic review and meta-analysis. METHODS A search of the Ovid EMBASE, PubMed, SCOPUS, and Cochrane databases from inception to July 2019 was conducted following PRISMA guidelines. Articles were screened against prespecified criteria. Facial nerve outcomes were classified as improved, stabilized, or worsened by last follow-up. Incidence was pooled by random-effects meta-analysis of proportions. RESULTS Thirty-three articles with a pooled cohort of 519 patients with FNS satisfied all criteria. Twenty-five articles described operative outcomes in 407 (78%) patients; 10 articles reported SRS outcomes in 112 (22%). In the surgical cohort, facial nerve function improved in 23% (95% CI 15%-32%), stabilized in 41% (95% CI 32%-50%), and worsened in 30% (95% CI 21%-40%). In the SRS cohort, facial nerve function was improved in 20% (95% CI 9%-34%), stable in 66% (95% CI 54%-78%), and worsened in 9% (95% CI 3%-16%). Compared with SRS, microsurgery was associated with a significantly lower incidence of stable facial nerve function (p < 0.01) and a significantly higher incidence of worsened facial nerve function (p < 0.01). Tumor progression and complication rates were comparable. Outcome certainty assessments were very low to moderate for all parameters. CONCLUSIONS Unfavorable facial nerve function outcomes are associated with surgical treatment of intracranial FNS, whereas stable facial nerve function outcomes are associated with SRS. Therefore, SRS should be recommended to patients with FNS who require treatment, and surgery should be reserved for patients with another indication, such as decompression of the brainstem. Further study is required to definitively optimize and validate management strategies for these rare skull base tumors.
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Affiliation(s)
| | | | | | | | | | - Bruce E Pollock
- Departments of1Neurosurgery
- 3Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Michael J Link
- Departments of1Neurosurgery
- 2Otolaryngology-Head and Neck Surgery, and
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7
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Luther E, Kaur G, Komotar R, Dinh C, Ivan ME. Commentary: Interposition Grafting of the Facial Nerve After Resection of a Large Facial Nerve Schwannoma: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown) 2021; 21:E342-E343. [PMID: 34235543 DOI: 10.1093/ons/opab254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 06/02/2021] [Indexed: 11/14/2022] Open
Affiliation(s)
- Evan Luther
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Gurvinder Kaur
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Ricardo Komotar
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA.,Sylvester Comprehensive Cancer Center, Miami, Florida, USA
| | - Christine Dinh
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Michael E Ivan
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA.,Sylvester Comprehensive Cancer Center, Miami, Florida, USA
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8
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Mehta GU, Lekovic GP, Slattery WH, Brackmann DE, Long H, Kano H, Kondziolka D, Mureb M, Bernstein K, Langlois AM, Mathieu D, Nabeel AM, Reda WA, Tawadros SR, Abdelkarim K, El-Shehaby AMN, Emad RM, Mohammed N, Urgosik D, Liscak R, Lee CC, Yang HC, Montazeripouragha A, Kaufmann AM, Joshi KC, Barnett GH, Trifiletti DM, Lunsford LD, Sheehan JP. Effect of Anatomic Segment Involvement on Stereotactic Radiosurgery for Facial Nerve Schwannomas: An International Multicenter Cohort Study. Neurosurgery 2021; 88:E91-E98. [PMID: 32687577 DOI: 10.1093/neuros/nyaa313] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 05/13/2020] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Facial nerve schwannomas are rare, challenging tumors to manage due to their nerve of origin. Functional outcomes after stereotactic radiosurgery (SRS) are incompletely defined. OBJECTIVE To analyze the effect of facial nerve segment involvement on functional outcome for these tumors. METHODS Patients who underwent single-session SRS for facial nerve schwannomas with at least 3 mo follow-up at 11 participating centers were included. Preoperative and treatment variables were recorded. Outcome measures included radiological tumor response and neurological function. RESULTS A total of 63 patients (34 females) were included in the present study. In total, 75% had preoperative facial weakness. Mean tumor volume and margin dose were 2.0 ± 2.4 cm3 and 12.2 ± 0.54 Gy, respectively. Mean radiological follow-up was 45.5 ± 38.9 mo. Progression-free survival at 2, 5, and 10 yr was 98.1%, 87.2%, and 87.2%, respectively. The cumulative proportion of patients with regressing tumors at 2, 5, and 10 yr was 43.1%, 63.6%, and 63.6%, respectively. The number of involved facial nerve segments significantly predicted tumor progression (P = .04). Facial nerve function was stable or improved in 57 patients (90%). Patients with involvement of the labyrinthine segment of the facial nerve were significantly more likely to have an improvement in facial nerve function after SRS (P = .03). Hearing worsened in at least 6% of patients. Otherwise, adverse radiation effects included facial twitching (3 patients), facial numbness (2 patients), and dizziness (2 patients). CONCLUSION SRS for facial nerve schwannomas is effective and spares facial nerve function in most patients. Some patients may have functional improvement after treatment, particularly if the labyrinthine segment is involved.
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Affiliation(s)
- Gautam U Mehta
- Division of Neurosurgery, House Ear Institute, Los Angeles, California
| | - Gregory P Lekovic
- Division of Neurosurgery, House Ear Institute, Los Angeles, California
| | | | | | - Hao Long
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Hideyuki Kano
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Douglas Kondziolka
- Department of Neurosurgery, New York University School of Medicine, New York, New York
| | - Monica Mureb
- Department of Neurosurgery, New York University School of Medicine, New York, New York
| | - Kenneth Bernstein
- Department of Radiation Oncology, NYU Langone Medical Center, New York, New York
| | - Anne-Marie Langlois
- Department of Neurosurgery, Université de Sherbrooke, Centre de Recherche du CHUS, Sherbrooke, Canada
| | - David Mathieu
- Department of Neurosurgery, Université de Sherbrooke, Centre de Recherche du CHUS, Sherbrooke, Canada
| | - Ahmed M Nabeel
- Gamma Knife Center Cairo, Nasser Institute Hospital, Cairo, Egypt.,Neurosurgery Department, Benha University, Qalubya, Egypt
| | - Wael A Reda
- Gamma Knife Center Cairo, Nasser Institute Hospital, Cairo, Egypt.,Neurosurgery Department, Ain Shams University, Cairo, Egypt
| | - Sameh R Tawadros
- Gamma Knife Center Cairo, Nasser Institute Hospital, Cairo, Egypt.,Neurosurgery Department, Ain Shams University, Cairo, Egypt
| | - Khaled Abdelkarim
- Gamma Knife Center Cairo, Nasser Institute Hospital, Cairo, Egypt.,Clinical Oncology Department, Ain Shams University, Cairo, Egypt
| | - Amr M N El-Shehaby
- Gamma Knife Center Cairo, Nasser Institute Hospital, Cairo, Egypt.,Neurosurgery Department, Ain Shams University, Cairo, Egypt
| | - Reem M Emad
- Gamma Knife Center Cairo, Nasser Institute Hospital, Cairo, Egypt.,Radiation Oncology Department, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Nasser Mohammed
- Department of Neurosurgery, University of Virginia Medical Center, Charlottesville, Virginia
| | - Dusan Urgosik
- Department of Stereotactic and Radiation Neurosurgery, Na Homolce Hospital, Prague, Czech Republic
| | - Roman Liscak
- Department of Stereotactic and Radiation Neurosurgery, Na Homolce Hospital, Prague, Czech Republic
| | - Cheng-Chia Lee
- Department of Neurosurgery, Neurologic Institute, Taipei Veterans General Hospital, Taipei, Taiwan.,School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Huai-Che Yang
- Department of Neurosurgery, Neurologic Institute, Taipei Veterans General Hospital, Taipei, Taiwan.,School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | | | | | - Krishna C Joshi
- Department of Neuro-oncology, Cleveland Clinic, Cleveland, Ohio
| | - Gene H Barnett
- Department of Neuro-oncology, Cleveland Clinic, Cleveland, Ohio
| | | | - L Dade Lunsford
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Jason P Sheehan
- Department of Neurosurgery, University of Virginia Medical Center, Charlottesville, Virginia
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9
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Akyoldaş G, Şirin A, Yılmaz M, Şengöz M, Peker S. Long-term results of Gamma Knife radiosurgery for facial nerve schwannomas. Neurol Res 2020; 42:1055-1060. [PMID: 32705956 DOI: 10.1080/01616412.2020.1796379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVE Long-term outcomes of eleven cases of facial nerve schwannoma were evaluated and the related literature was reviewed to determine the efficacy of Gamma Knife radiosurgery for treating patients with facial nerve schwannoma. METHODS Eleven patients with facial nerve schwannoma (7 women and 4 men; mean age, 44.2 years; range, 19-73 years) underwent Gamma Knife radiosurgery. The most common symptoms were facial palsy (n = 10) and hearing loss (n = 7). Five patients presented with headache. Two patients had undergone prior resection. The patients' clinical and radiographic data were evaluated retrospectively. RESULTS For the 11 cases of facial nerve schwannoma, mean tumor volume was 3.1 cm3 (range, 0.4-7.4 cm3) and the mean marginal dose applied was 11.9 Gy (range, 11-13 Gy). The mean follow-up period was 84.3 months (range, 66-117 months). Tumor control was achieved in all patients. At the time of writing, four patients experienced tumor volume regression and the other seven were in stable condition. During follow-up, nine patients experienced no change in their facial function, two experienced deteriorated facial function, and none developed new facial palsy. Ten patients who had serviceable hearing prior to Gamma Knife radiosurgery retained their hearing. CONCLUSIONS Gamma Knife radiosurgery achieves excellent results with respect to tumor control for 7 years on average. In addition, Gamma Knife radiosurgery provides good results in facial nerve and hearing function at long term. Our series demonstrates that Gamma Knife radiosurgery is an effective and safe treatment for patients with either primary or residual facial nerve schwannoma.
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Affiliation(s)
- Göktuğ Akyoldaş
- Department of Neurosurgery, Koç University School of Medicine , Istanbul, Turkey
| | - Alperen Şirin
- Acıbadem Mehmet Ali Aydınlar University School of Medicine , Istanbul, Turkey
| | - Meltem Yılmaz
- Medical Biotechnology, Acıbadem Mehmet Ali Aydınlar University , Istanbul, Turkey
| | - Meriç Şengöz
- Department of Radiation Oncology, Acıbadem Mehmet Ali Aydınlar University School of Medicine , Istanbul, Turkey
| | - Selçuk Peker
- Department of Neurosurgery, Koç University School of Medicine , Istanbul, Turkey
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10
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Bartindale M, Heiferman J, Joyce C, Anderson D, Leonetti J. Facial Schwannoma Management Outcomes: A Systematic Review of the Literature. Otolaryngol Head Neck Surg 2020; 163:293-301. [PMID: 32228141 DOI: 10.1177/0194599820913639] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
OBJECTIVE To evaluate facial nerve outcomes of various management strategies for facial schwannomas by assimilating individualized patient data from the literature to address controversies in management. DATA SOURCES PubMed-National Center for Biotechnology Information and Scopus databases. REVIEW METHODS A systematic review of the literature was performed for studies regarding facial schwannomas. Studies were included if they presented patient-level data, type of intervention, pre- and postintervention House-Brackmann (HB) grades, and tumor location by facial nerve segment. RESULTS Individualized data from 487 patients were collected from 31 studies. Eighty (16.4%) facial schwannomas were managed with observation, 25 (5.1%) with surgical decompression, 20 (4.1%) with stereotactic radiosurgery, 225 (46.2%) with total resection, and 137 (28.1%) with subtotal resection/stripping surgery. Stripping surgery/subtotal resection with good preoperative facial nerve function maintained HB grade 1 or 2 in 96% of cases. With a total resection of intradural tumors, preoperative HB grade did not significantly affect facial nerve outcome (n = 45, P = .46). However, a lower preoperative HB grade was associated with a better facial nerve outcome with intratemporal tumors (n = 56, P = .009). When stereotactic radiosurgery was performed, 40% of patients had improved, 35% were stable, and 25% had worsened facial function. Facial nerve decompression rarely affected short-term facial nerve status. CONCLUSION The data from this study help delineate which treatment strategies are best in which clinical scenarios. The findings can be used to develop a more definitive management algorithm for this complicated pathology.
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Affiliation(s)
- Matthew Bartindale
- Department of Otolaryngology-Head and Neck Surgery, Loyola University Medical Center, Maywood, Illinois, USA
| | - Jeffrey Heiferman
- Department of Otolaryngology-Head and Neck Surgery, Loyola University Medical Center, Maywood, Illinois, USA
| | - Cara Joyce
- Clinical Research Office, Division of Biostatistics, Loyola University Medical Center, Maywood, Illinois, USA
| | - Douglas Anderson
- Department of Neurological Surgery, Loyola University Medical Center, Maywood, Illinois, USA
| | - John Leonetti
- Department of Otolaryngology-Head and Neck Surgery, Loyola University Medical Center, Maywood, Illinois, USA
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11
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Beckmann S, Caversaccio M, Anschuetz L. [Conductive hearing loss and peripheral facial nerve palsy]. HNO 2020; 67:710-711. [PMID: 31363796 DOI: 10.1007/s00106-019-0716-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- S Beckmann
- Universitätsklinik für Hals‑, Nasen- und Ohrenkrankheiten, Kopf- und Halschirurgie, Inselspital Bern, Freiburgstrasse 10, 3010, Bern, Schweiz
| | - M Caversaccio
- Universitätsklinik für Hals‑, Nasen- und Ohrenkrankheiten, Kopf- und Halschirurgie, Inselspital Bern, Freiburgstrasse 10, 3010, Bern, Schweiz
| | - L Anschuetz
- Universitätsklinik für Hals‑, Nasen- und Ohrenkrankheiten, Kopf- und Halschirurgie, Inselspital Bern, Freiburgstrasse 10, 3010, Bern, Schweiz.
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12
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Bartindale M, Heiferman J, Joyce C, Balasubramanian N, Anderson D, Leonetti J. The Natural History of Facial Schwannomas: A Meta-Analysis of Case Series. J Neurol Surg B Skull Base 2018; 80:458-468. [PMID: 31534886 DOI: 10.1055/s-0038-1675590] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Accepted: 09/23/2018] [Indexed: 12/20/2022] Open
Abstract
Objective This study is to establish predictors of facial paralysis and auditory morbidity secondary to facial schwannomas by assimilating individualized patient data from the literature. Design A systematic review of the literature was conducted for studies regarding facial schwannomas. Studies were only included if they presented patient level data, House-Brackmann grades, and tumor location by facial nerve segment. Odds ratios (OR) were estimated using generalized linear mixed models. Main Outcome Measures Facial weakness and hearing loss. Results Data from 504 patients were collected from 32 studies. The geniculate ganglion was the most common facial nerve segment involved (39.3%). A greater number of facial nerve segments involved was positively associated with both facial weakness and hearing loss, whereas tumor diameter did not correlate with either morbidity. Intratemporal involvement was associated with higher odds of facial weakness (OR = 4.78, p < 0.001), intradural involvement was negatively associated with facial weakness (OR = 0.56, p = 0.004), and extratemporal involvement was not a predictor of facial weakness (OR = 0.68, p = 0.27). The odds of hearing loss increased with more proximal location of the tumor (intradural: OR = 3.26, p < 0.001; intratemporal: OR = 0.60, p = 0.14; extratemporal: OR = 0.27, p = 0.01). Conclusion The most important factors associated with facial weakness and hearing loss are tumor location and the number of facial nerve segments involved. An understanding of the factors that contribute most heavily to the natural morbidity can help guide the appropriate timing and type of intervention in future cases of facial schwannoma.
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Affiliation(s)
- Matthew Bartindale
- Depaent of Otolaryngology-Head and Neck Surgery, Loyola University Medical Center, Maywood, Illinois
| | - Jeffrey Heiferman
- Depaent of Otolaryngology-Head and Neck Surgery, Loyola University Medical Center, Maywood, Illinois
| | - Cara Joyce
- Clinical Research Office, Division of Biostatistics, Loyola University Medical Center, Maywood, Illinois
| | - Neelam Balasubramanian
- Clinical Research Office, Division of Biostatistics, Loyola University Medical Center, Maywood, Illinois
| | - Douglas Anderson
- Department of Neurological Surgery, Loyola University Medical Center, Maywood, Illinois
| | - John Leonetti
- Depaent of Otolaryngology-Head and Neck Surgery, Loyola University Medical Center, Maywood, Illinois
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13
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Eshraghi AA, Oker N, Ocak E, Verillaud B, Babcock T, Camous D, Kravietz A, Morcos J, Herman P, Kania R. Management of Facial Nerve Schwannoma: A Multicenter Study of 50 Cases. J Neurol Surg B Skull Base 2018; 80:352-356. [PMID: 31316881 DOI: 10.1055/s-0038-1670687] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 08/08/2018] [Indexed: 01/08/2023] Open
Abstract
Objective In the management of facial nerve schwannoma (FNS), surgical tumor resection is now often being replaced with more conservative approaches, such as observation with serial imaging or stereotactic radiosurgery (SRS). Given the scarcity of these lesions, determining the optimal management of FNS remains challenging and subject of debate with multiple treatment approaches supported in the literature. Methods A retrospective chart review was performed in two academic centers for patients diagnosed with FNS between 1996 and 2017. The clinical presentation, treatment modalities employed, tumor control rates, and facial nerve function (FNF) outcomes (House-Brackmann system) were assessed and analyzed. Results The study comprised 50 adult patients. Initial treatment modalities included observation with serial clinicoradiologic review in 27 patients (54%), surgery in 17 patients (34%), and SRS in 6 patients (12%). The FNF were decreased in more than half of the patients who had surgery. Nonetheless, more than 80% of the patients who were initially managed with observation or SRS had stable or improved FNF. Conclusion A prevailing trend toward more conservative treatment modalities for FNS has evolved over time, providing relatively long-term preservation of FNF. As there are multiple management options available, it is of paramount importance that the treating physician be familiar with all treatment modalities and outcomes and counsel patients appropriately. The surgery should be reserved for large tumors and poor FNF at initial presentation or follow-up while watchful observation with imaging is the treatment of choice for rest of the patients.
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Affiliation(s)
- Adrien A Eshraghi
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, United States.,Department of Neurosurgery, University of Miami Miller School of Medicine, Miami, United States
| | - Natalie Oker
- Department of Otolaryngology, Lariboisière University Hospital, Paris Diderot University, APHP, Paris Sorbonne Cité, Paris, France
| | - Emre Ocak
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, United States
| | - Benjamin Verillaud
- Department of Otolaryngology, Lariboisière University Hospital, Paris Diderot University, APHP, Paris Sorbonne Cité, Paris, France
| | - Thomas Babcock
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, United States
| | - Domitille Camous
- Department of Otolaryngology, Lariboisière University Hospital, Paris Diderot University, APHP, Paris Sorbonne Cité, Paris, France
| | - Adam Kravietz
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, United States
| | - Jacques Morcos
- Department of Neurosurgery, University of Miami Miller School of Medicine, Miami, United States
| | - Philippe Herman
- Department of Otolaryngology, Lariboisière University Hospital, Paris Diderot University, APHP, Paris Sorbonne Cité, Paris, France
| | - Romain Kania
- Department of Otolaryngology, Lariboisière University Hospital, Paris Diderot University, APHP, Paris Sorbonne Cité, Paris, France
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14
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Comps JN, Tuleasca C, Goncalves-Matoso B, Schiappacasse L, Marguet M, Levivier M. Upfront Gamma Knife surgery for facial nerve schwannomas: retrospective case series analysis and systematic review. Acta Neurochir (Wien) 2018; 160:987-996. [PMID: 29492656 DOI: 10.1007/s00701-018-3503-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 02/19/2018] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Facial nerve schwannomas are rare tumors and account for less than 2% of intracranial neurinomas, despite being the most common tumors of the facial nerve. The optimal management is currently under debate and includes observation, microsurgical resection, radiosurgery (RS), and fractionated radiotherapy. Radiosurgery might be a valuable alternative, as a minimally invasive technique, in symptomatic patients and/or presenting tumor growth. METHODS We review our series of four consecutive cases, treated with Gamma Knife surgery (GKS) between July 2010 and July 2017 in Lausanne University Hospital, Switzerland. Clinical and dosimetric parameters were assessed. Radiosurgery was performed using Leksell Gamma Knife Perfexion. We additionally performed a systematic review, which included 23 articles and 193 treated patients from the current literrature. RESULTS The mean age at the time of the GKS was 44.25 years (median 43.5, range 34-56). Mean follow-up period was 31.8 months (median 36, range 3-60). Two cases presented with facial palsy and other two with hemifacial spasm. Pretherapeutically, House-Brackmann (HB) grade was II for one case, III for two, and VI for one. The mean gross tumor volume (GTV) was 0.406 ml (median 0.470 ml, range 0.030-0.638 ml). The mean marginal prescribed dose was 12 Gy at the mean 54% isodose line (median 50%, range 50-70). The mean prescription isodose volume (PIV) was 0.510 ml (median 0.596 ml, range 0.052-0.805 ml). The mean dose received by the cochlea was 4.2 Gy (median 4.1 Gy, range 0.1-10). One patient benefited from a staged-volume GKS. At last follow-up, tumor volume was stable in one and decreased in three cases. Facial palsy remained stable in two patients (one HB II and one HB III) and improved in two (from HB III to II and from HB VI to HB III). Regarding hemifacial spasm, both patients presenting one pretherapeutically had a decrease in its frequency and intensity after GKS. All patients kept stable Gardner-Robertson class 1 at last follow-up. CONCLUSION In our experience, RS and particularly GKS, using standard, yet low doses of radiation, appear to be a safe and effective therapeutic option in the management of these rare tumors. The results as from our systematic review are also encouraging with satisfactory rates of clinical stabilization and/or improvement and high rate of tumor control. Complications are infrequent and mostly transient.
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Affiliation(s)
- Jean-Nicolas Comps
- Neurosciences Department, Neurosurgery Service and Gamma Knife Center, Lausanne University Hospital (CHUV), Rue du Bugnon 44-46, BH-08, CH-1011, Lausanne, Switzerland
| | - Constantin Tuleasca
- Neurosciences Department, Neurosurgery Service and Gamma Knife Center, Lausanne University Hospital (CHUV), Rue du Bugnon 44-46, BH-08, CH-1011, Lausanne, Switzerland.
- Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland.
- Swiss Federal Institute of Technology, Signal Processing Laboratory (LTS5), Lausanne, Switzerland.
| | | | - Luis Schiappacasse
- Radiotherapy Department, Lausanne University Hospital, Lausanne, Switzerland
| | - Maud Marguet
- Institute of Radiation Physics Lausanne, Lausanne, Switzerland
| | - Marc Levivier
- Neurosciences Department, Neurosurgery Service and Gamma Knife Center, Lausanne University Hospital (CHUV), Rue du Bugnon 44-46, BH-08, CH-1011, Lausanne, Switzerland
- Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
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15
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Lahlou G, Nguyen Y, Russo FY, Ferrary E, Sterkers O, Bernardeschi D. Geniculate Ganglion Tumors: Clinical Presentation and Surgical Results. Otolaryngol Head Neck Surg 2016; 155:850-855. [PMID: 27484229 DOI: 10.1177/0194599816661482] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 07/07/2016] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Facial nerve tumors are rare lesions mostly located in the geniculate ganglion. This study aims to compare those tumors limited to the geniculate ganglion in terms of clinical features and postoperative outcomes. STUDY DESIGN Case series with chart review. SETTINGS University tertiary reference center. SUBJECTS AND METHODS Medical charts were reviewed for 17 patients who had surgery for geniculate ganglion tumor removal (10 hemangiomas, 6 schwannomas, 1 meningioma). Hemangiomas and schwannomas were compared for preoperative facial nerve function, hearing, tumor size, and postoperative outcomes. RESULTS Facial palsy was observed in all cases. Regarding the preoperative facial nerve function, severe facial palsy (House-Brackmann grades V and VI) was present in 70% of cases for hemangiomas and for no case of schwannoma (P = .01), although hemangiomas were significantly smaller tumors (P = .01). Hearing loss was observed in 4 cases (23.5%) and was related to tumor volume (P < .0001). A complete excision was achieved in all cases, and a facial nerve graft was performed immediately after interruption in 16 patients (94%). Postoperative facial nerve function was improved or stabilized in 94% of cases. A preoperative House-Brackman grade VI was shown as a negative factor for postoperative facial nerve function. CONCLUSIONS Differences in clinical presentations could help in establishing the good therapeutic option depending on the tumor type. Surgery, when indicated, is safe and effective, and postoperative outcomes are not related to tumor type.
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Affiliation(s)
- Ghizlene Lahlou
- AP-HP, Pitie-Salpetriere Hospital, Otology, Auditory Implants and Skull Base Surgery Department, Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, Paris, France.,INSERM UMR_S 1159, Mini-invasive and Robot-Based Surgical Rehabilitation of Hearing, France
| | - Yann Nguyen
- AP-HP, Pitie-Salpetriere Hospital, Otology, Auditory Implants and Skull Base Surgery Department, Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, Paris, France.,INSERM UMR_S 1159, Mini-invasive and Robot-Based Surgical Rehabilitation of Hearing, France
| | - Francesca Yoshie Russo
- AP-HP, Pitie-Salpetriere Hospital, Otology, Auditory Implants and Skull Base Surgery Department, Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, Paris, France.,INSERM UMR_S 1159, Mini-invasive and Robot-Based Surgical Rehabilitation of Hearing, France
| | - Evelyne Ferrary
- AP-HP, Pitie-Salpetriere Hospital, Otology, Auditory Implants and Skull Base Surgery Department, Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, Paris, France.,INSERM UMR_S 1159, Mini-invasive and Robot-Based Surgical Rehabilitation of Hearing, France
| | - Olivier Sterkers
- AP-HP, Pitie-Salpetriere Hospital, Otology, Auditory Implants and Skull Base Surgery Department, Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, Paris, France.,INSERM UMR_S 1159, Mini-invasive and Robot-Based Surgical Rehabilitation of Hearing, France
| | - Daniele Bernardeschi
- AP-HP, Pitie-Salpetriere Hospital, Otology, Auditory Implants and Skull Base Surgery Department, Paris, France .,Sorbonne Universités, UPMC Univ Paris 06, Paris, France.,INSERM UMR_S 1159, Mini-invasive and Robot-Based Surgical Rehabilitation of Hearing, France
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16
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Makadia L, Mowry SE. Management of intratemporal facial nerve schwannomas: The evolution of treatment paradigms from 2000-2015. World J Otorhinolaryngol 2016; 6:13-18. [DOI: 10.5319/wjo.v6.i1.13] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 12/18/2015] [Accepted: 01/22/2016] [Indexed: 02/06/2023] Open
Abstract
Intratemporal facial nerve schwannoma (FNS) are rare benign tumors of the skull base. Many of these tumors will be detected during evaluation for symptoms suggestive of vestibular schwannoma. However, there are several signs and symptoms which can suggest the facial nerve as the origin of the tumor. Intratemporal FNS can be multiple, like “beads on a string”, or solitary lesions of the internal auditory canal. This variable tumor morphology necessitates multiple treatment options to allow patients the best chance of preservation of facial nerve function. Historically FNS were managed with resection of the nerve with cable grafting. However this leaves the patient with permanent facial weakness and asymmetry. Currently most patients find this outcome unacceptable, especially when they present with good to normal facial nerve function. Facial paralysis has a significantly negative impact on quality life, so treatment regimens that spare facial nerve function have been used in patients who present with moderate to good facial nerve function. Nerve sparing options include tumor debulking, decompression of the bony facial canal, radiosurgery, and observation. The choice of management depends on the degree of facial nerve dysfunction at presentation, hearing status in the affected ear, medical comorbidities and patient preference. Each treatment option will be discussed in detail and suggestions for patient management will be presented.
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17
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Intratemporal facial nerve schwannoma: clinical presentation and management. Eur Arch Otorhinolaryngol 2015; 273:3497-3504. [PMID: 26676873 DOI: 10.1007/s00405-015-3850-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 12/01/2015] [Indexed: 10/22/2022]
Abstract
Facial nerve schwannoma is the most common facial nerve tumor, but its therapeutic strategy remains debated. The aim of this study is to analyze the facial nerve function and the hearing outcomes after surgery or wait-and-scan policy in a facial nerve schwannoma series. A monocentric retrospective review of medical charts of patients followed for an intratemporal facial nerve schwannoma between 1988 and 2013 was performed. Twenty-two patients were included. Data were extracted pertaining to the following variables: patient demographics, tumor localization, clinical and imaging features, facial nerve function and hearing levels, and details of surgical intervention. The majority of tumors were located at the geniculate ganglion. Initial symptoms were mainly facial palsy and hearing loss. The average follow-up was 4.8 ± 4.5 years. Nineteen patients underwent surgery, and three patients were observed. After surgery, 11 patients had a stable or improved facial nerve function (57.9 %), and 8 patients had a worsened facial nerve function (42.1 %). Facial nerve function was in the majority of cases a HB grade III, depending on surgical strategy. No patient presented a postoperative HB grade V or VI. Regarding the hearing, it remained stable after surgery in 52.6 % of cases, and improved in 10.5 % of cases. Among monitored patients, facial nerve function and hearing remained stable. Surgery for facial nerve schwannoma is a safe and effective option in the treatment of these tumors.
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