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Palavani LB, Batista S, Andreão FF, de Barros Oliveira L, Silva GM, Koester S, Barbieri JF, Bertani R, da Silva VTG, Acioly M, Paiva WS, De Andrade EJ, Rassi MS. Retrosigmoid versus middle fossa approach for hearing and facial nerve preservation in vestibular schwannoma surgery: A systematic review and comparative meta-analysis. J Clin Neurosci 2024; 124:1-14. [PMID: 38615371 DOI: 10.1016/j.jocn.2024.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 03/28/2024] [Accepted: 04/07/2024] [Indexed: 04/16/2024]
Abstract
BACKGROUND Vestibular schwannomas (VS) are benign tumors arising from vestibular nerve's Schwann cells. Surgical resection via retrosigmoid (RS) or middle fossa (MF) is standard, but the optimal approach remains debated. This meta-analysis evaluated RS and MF approaches for VS management, emphasizing hearing preservation and Cranial nerve seven (CN VII) outcomes stratified by tumor size. METHODS Systematic searches across PubMed, Cochrane, Web of Science, and Embase identified relevant studies. Hearing and CN VII outcomes were gauged using the American Academy of Otolaryngology-Head and Neck Surgery, Gardner Robertson, and House-Brackmann scores. RESULTS Among 7228 patients, 56 % underwent RS and 44 % MF. For intracanalicular tumors, MF recorded 38 % hearing loss, compared to RS's 54 %. In small tumors (<1.5 cm), MF showed 41 % hearing loss, contrasting RS's lower 15 %. Medium-sized tumors (1.5 cm-2.9 cm) revealed 68 % hearing loss in MF and 55 % in RS. Large tumors (>3cm) were only reported in RS with a hearing loss rate of 62 %. CONCLUSION Conclusively, while MF may be preferable for intracanalicular tumors, RS demonstrated superior hearing preservation for small to medium-sized tumors. This research underlines the significance of stratified outcomes by tumor size, guiding surgical decisions and enhancing patient outcomes.
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Affiliation(s)
| | - Sávio Batista
- Federal University of Rio de Janeiro, Faculty of Medicine, Rio de Janeiro, RJ, Brazil
| | - Filipi Fim Andreão
- Federal University of Rio de Janeiro, Faculty of Medicine, Rio de Janeiro, RJ, Brazil.
| | | | - Guilherme Melo Silva
- Federal University of Rio de Janeiro, Faculty of Medicine, Rio de Janeiro, RJ, Brazil
| | - Stefan Koester
- Vanderbilt University School of Medicine, Nashville, TN, the United States of America
| | | | - Raphael Bertani
- Department of Neurosurgery, University of Sao Paulo Medical School, SP, Brazil
| | | | - Marcus Acioly
- Division of Neurosurgery, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Wellingson S Paiva
- Department of Neurosurgery, University of Sao Paulo Medical School, SP, Brazil
| | - Erion J De Andrade
- Division of Neurosurgery, Section of Skull Base Surgery, Emory University, Atlanta, GA, the United States of America
| | - Marcio S Rassi
- Division of Neurosurgery, Department of Surgery, Santa Casa de São Paulo School of Medical Sciences, SP, Brazil
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Flores-Milan G, Rainone GJ, Piper K, Peto I, Danner C, Allen KP, Liu SS, van Loveren H, Agazzi S. Temporal lobe injury with middle fossa approach to intracanalicular vestibular schwannomas: a systematic review. Neurosurg Rev 2024; 47:188. [PMID: 38658423 DOI: 10.1007/s10143-024-02425-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/15/2024] [Accepted: 04/20/2024] [Indexed: 04/26/2024]
Abstract
There are several surgical approaches for vestibular schwannoma (VS) resection. However, management has gradually shifted from microsurgical resection, toward surveillance and radiosurgery. One of the arguments against microsurgery via the middle fossa approach (MFA) is the risk of temporal lobe retraction injury or sequelae. Here, we sought to evaluate the incidence of temporal lobe retraction injury or sequela from a MFA via a systematic review of the existing literature. This systematic review was conducted according to the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines. Relevant studies reporting temporal lobe injury or sequela during MFA for VS were identified. Data was aggregated and subsequently analyzed to evaluate the incidence of temporal lobe injury. 22 studies were included for statistical analysis, encompassing 1522 patients that underwent VS resection via MFA. The overall rate of temporal lobe sequelae from this approach was 0.7%. The rate of CSF leak was 5.9%. The rate of wound infection was 0.6%. Meningitis occurred in 1.6% of patients. With the MFA, 92% of patients had good facial outcomes, and 54.9% had hearing preservation. Our series and literature review support that temporal lobe retraction injury or sequelae is an infrequent complication from an MFA for intracanalicular VS resection.
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Affiliation(s)
- Gabriel Flores-Milan
- Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida, 2 Tampa General Circle, Tampa, FL, USA
| | - Gersham J Rainone
- Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida, 2 Tampa General Circle, Tampa, FL, USA.
| | - Keaton Piper
- Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida, 2 Tampa General Circle, Tampa, FL, USA
| | - Ivo Peto
- Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida, 2 Tampa General Circle, Tampa, FL, USA
| | - Christopher Danner
- Tampa Bay Hearing and Balance Center, 5 Tampa General Cir, Ste 610, Tampa, FL, USA
| | - Kyle P Allen
- Tampa Bay Hearing and Balance Center, 5 Tampa General Cir, Ste 610, Tampa, FL, USA
| | - Shih Sing Liu
- Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida, 2 Tampa General Circle, Tampa, FL, USA
| | - Harry van Loveren
- Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida, 2 Tampa General Circle, Tampa, FL, USA
| | - Siviero Agazzi
- Department of Neurosurgery and Brain Repair, Morsani College of Medicine, University of South Florida, 2 Tampa General Circle, Tampa, FL, USA
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Cutri RM, Lin J, Wilson ML, Doherty JK, Pan DW. Disparities in Sporadic Vestibular Schwannoma Initial Presentation Between a Public Safety Net Hospital and Tertiary Academic Medical Center at the Same Zip Code 2010 to 2020. Ann Otol Rhinol Laryngol 2024:34894241241201. [PMID: 38517145 DOI: 10.1177/00034894241241201] [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: 03/23/2024]
Abstract
INTRODUCTION Treatment of vestibular schwannoma (VS) has been extensively studied, but a gap in knowledge exists demonstrating how racial and socioeconomic status influence VS presentation. Our institution has a unique setting with a public safety net hospital (PSNH) and tertiary academic medical center (TAMC) in the same zip code, which we study to evaluate initial VS presentation disparities in patient populations presenting to these hospital settings. METHODS Retrospective chart review was performed of all adult patients (n = 531) presenting 2010 to 2020 for initial VS evaluation at TAMC (n = 462) and PSNH (n = 69). Ethnicity, insurance, maximum tumor size, audiometry, initial treatment recommendation, treatment received, and follow up were recorded and statistical analysis performed to determine differences. RESULTS Average age at diagnosis (51.7 ± 13.6 TAMC vs 52.3 ± 12.4 PSNH) and gender (58.4% TAMC vs 52.2% PSNH female) were similar. Patients' insurance (TAMC 75.9% privately insured vs PSNH 82% Medicaid) and racial/ethnic profiles (TAMC 67.7% White and 10.0% Hispanic/Latinx, vs PSNH 4.8% White but 59.7% Hispanic/Latinx) were significantly different. Tumor size was larger at PSNH (20.2 ± 13.3 mm) than TAMC (16.6 ± 10.0 mm). Hearing was more impaired at PSNH than TAMC (mean pure tone average 58.3 dB vs 43.9 dB, word recognition scores 52.3% vs 68.2%, respectively). Initial treatment recommendations and treatment received may include more than 1 modality. TAMC patients were offered 66.7% surgery, 31.2% observation, and 5.2% radiation, while PSNH patients offered 50.7% observation, 49.3% surgery, and 8.7% radiation. TAMC patients received 62.9% surgery, 32.5% observation, and 5.3% radiation, while PSNH patients received 36.2% surgery, 59.4% observation, and 14.5% radiation. Follow up and treatment at the same facility was not significantly different between hospitals. CONCLUSIONS Hearing was worse and tumor size larger in patients presenting to PSNH. Despite worse hearing status and larger tumor size, the majority of PSNH patients were initially offered observation, compared to TAMC where most patients were initially offered surgery.
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Affiliation(s)
- Raffaello M Cutri
- Caruso Department of Otolaryngology-Head and Neck Surgery, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
- Cedars-Sinai Department of Otolaryngology-Head and Neck Surgery, Los Angeles, CA, USA
| | - Joshua Lin
- Caruso Department of Otolaryngology-Head and Neck Surgery, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
| | - Melissa L Wilson
- Department of Population and Public Health Sciences, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
| | - Joni K Doherty
- Caruso Department of Otolaryngology-Head and Neck Surgery, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
| | - Dorothy W Pan
- Caruso Department of Otolaryngology-Head and Neck Surgery, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
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Balossier A, Sahgal A, Kotecha R, Fariselli L, Gorgulho A, Levivier M, Ma L, Paddick I, Pollock BE, Sheehan JP, Suh JH, Yomo S, Zhang Z, Regis J. Management of sporadic intracanalicular vestibular schwannomas: A critical review and International Stereotactic Radiosurgery Society (ISRS) practice guidelines. Neuro Oncol 2024; 26:429-443. [PMID: 38134966 PMCID: PMC10912008 DOI: 10.1093/neuonc/noad253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Indexed: 12/24/2023] Open
Abstract
BACKGROUND The choice of an appropriate strategy for intracanalicular vestibular schwannoma (ICVS) is still debated. We conducted a systematic review and meta-analysis with the aim to compare treatment outcomes amongst management strategies (conservative surveillance (CS), microsurgical resection (MR), or stereotactic radiosurgery (SRS)) aiming to inform guideline recommendations on behalf of the International Stereotactic Radiosurgery Society (ISRS). METHODS Using PRISMA guidelines, we reviewed manuscripts published between January 1990 and October 2021 referenced in PubMed or Embase. Inclusion criteria were peer-reviewed clinical studies or case series reporting a cohort of ICVS managed with CS, MR, or SRS. Primary outcome measures included tumor control, the need for additional treatment, hearing outcomes, and posttreatment neurological deficits. These were pooled using meta-analytical techniques and compared using meta-regression with random effect. RESULTS Forty studies were included (2371 patients). The weighted pooled estimates for tumor control were 96% and 65% in SRS and CS series, respectively (P < .001). Need for further treatment was reported in 1%, 2%, and 25% for SRS, MR, and CS, respectively (P = .001). Hearing preservation was reported in 67%, 68%, and 55% for SRS, MR, and CS, respectively (P = .21). Persistent facial nerve deficit was reported in 0.1% and 10% for SRS and MR series, respectively (P = .01). CONCLUSIONS SRS is a noninvasive treatment with at least equivalent rates of tumor control and hearing preservation as compared to MR, with the caveat of better facial nerve preservation. As compared to CS, upfront SRS is an effective treatment in achieving tumor control with similar rates of hearing preservation.
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Affiliation(s)
- Anne Balossier
- AP-HM, Timone Hospital, Functional and Stereotactic Neurosurgery, Marseille, France
- Aix-Marseille Université, Institut National de la Santé et de la Recherche Médicale, Institut de Neurosciences des Systèmes (INS) UMR1106, Marseille, France
| | - Arjun Sahgal
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - Rupesh Kotecha
- Department of Radiation Oncology, Miami Cancer Institute, Baptist Health South Florida, Miami, Florida, USA
| | - Laura Fariselli
- Department of Neurosurgery, Unit of Radiotherapy, Fondazione IRCCS Istituto Neurologico C. Besta, Milano, Italy
| | - Alessandra Gorgulho
- Department of Neurosurgery, State University of São Paulo, NeuroSapiens Group, and, D’Or Institute for Research and Education, São Paulo, Brazil
| | - Marc Levivier
- Department of Clinical Neurosciences, Neurosurgery Service and Gamma Knife Center, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
| | - Lijun Ma
- Department of Radiation Oncology, University of Southern California, Los Angeles, California, USA
| | - Ian Paddick
- Queen Square Radiosurgery Centre, National Hospital for Neurology and Neurosurgery, London, UK
| | - Bruce E Pollock
- Department of Neurological Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Jason P Sheehan
- Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - John H Suh
- Department of Radiation Oncology, Taussig Cancer Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Shoji Yomo
- Division of Radiation Oncology, Aizawa Comprehensive Cancer Center, Aizawa Hospital, Matsumoto, Japan
| | - Zhenwei Zhang
- Center of Advanced Analytics, Baptist Health South Florida, Miami, Florida, USA
| | - Jean Regis
- AP-HM, Timone Hospital, Functional and Stereotactic Neurosurgery, Marseille, France
- Aix-Marseille Université, Institut National de la Santé et de la Recherche Médicale, Institut de Neurosciences des Systèmes (INS) UMR1106, Marseille, France
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Palmisciano P, Doyle EJ, Hoz SS, Cass D, Samy RN, Andaluz N, Zuccarello M. Transcanal Transpromontorial Approaches to the Internal Auditory Canal: A Systematic Review. Laryngoscope 2023; 133:2856-2867. [PMID: 37078512 DOI: 10.1002/lary.30703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 02/24/2023] [Accepted: 03/25/2023] [Indexed: 04/21/2023]
Abstract
OBJECTIVE Exclusive endoscopic (EETTA) and expanded (ExpTTA) transcanal transpromontorial approaches have shown promising results for treating internal auditory canal (IAC) lesions. We reviewed the literature to answer the question: "Do EETTA and ExpTTA achieve high rates of complete resection and low rates of complications in treating patients with IAC pathologies?" DATA SOURCES PubMed, EMBASE, Scopus, Web of Science, and Cochrane were searched. REVIEW METHODS Studies reporting EETTA/ExpTTA for IAC pathologies were included. Indications and techniques were discussed and meta-analyzed rates of outcomes and complications were obtained with random-effect model meta-analyses. RESULTS We included 16 studies comprising 173 patients, all with non-serviceable hearing. Baseline FN function was mostly House-Brackmann-I (96.5%; 95% CI: 94.9-98.1%). Most lesions were vestibular/cochlear schwannomas (98.3%; 95% CI: 96.7-99.8%) of Koos-I (45.9%; 95% CI: 41.3-50.3%) or II (47.1%; 95% CI: 43-51.1%). EETTA was performed in 101 patients (58.4%; 95% CI: 52.4-64.3%) and ExpTTA in 72 (41.6%; 95% CI: 35.6-47.6%), achieving gross-total resection in all cases. Transient complications occurred in 30 patients (17.3%; 95% CI: 13.9-20.5%), with meta-analyzed rates of 9% (95% CI: 4-15%), comprising FN palsy with spontaneous resolution (10.4%; 95% CI: 7.7-13.1%). Persistent complications occurred in 34 patients (19.6%; 95% CI: 17.1-22.2%), with meta-analyzed rates of 12% (95% CI: 7-19%), comprising persistent FN palsy in 22 patients (12.7%; 95% CI: 10.2-15.2%). Mean follow-up was 16 months (range, 1-69; 95% CI: 14.7-17.4). Post-surgery FN function was stable in 131 patients (75.8%; 95% CI: 72.1-79.5%), worsened in 38 (21.9%; 95% CI: 18.8-25%), and improved in 4 (2.3%; 95% CI: 0.7-3.9%), with meta-analyzed rates of improved/stable response of 84% (95% CI: 76-90%). CONCLUSION Transpromontorial approaches offer newer routes for IAC surgery, but their restricted indications and unfavorable FN outcomes currently limit their use. Laryngoscope, 133:2856-2867, 2023.
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Affiliation(s)
- Paolo Palmisciano
- Department of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Edward J Doyle
- Department of Otolaryngology Head and Neck Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Samer S Hoz
- Department of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Daryn Cass
- Department of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Ravi N Samy
- Department of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
- Department of Otolaryngology Head and Neck Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Norberto Andaluz
- Department of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Mario Zuccarello
- Department of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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Budohoski KP, Rennert RC, Gordon SA, Raheja A, Brandon C, Henson JC, Azab MA, Patel NS, Karsy M, Gurgel RK, Shelton C, Couldwell WT. Factors associated with hearing outcomes after a middle fossa approach in 131 consecutive patients with vestibular schwannomas. J Neurosurg 2023; 139:432-441. [PMID: 36461828 DOI: 10.3171/2022.10.jns221525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 10/18/2022] [Indexed: 12/24/2022]
Abstract
OBJECTIVE The middle fossa approach is an effective option for the treatment of small (Koos grade I and II) vestibular schwannomas (VSs) when the goal is hearing preservation. The authors evaluated the rates of hearing preservation and examined the factors associated with improved hearing outcomes after the middle fossa approach for VSs. METHODS In this retrospective, single-center cohort study evaluating the clinical outcomes after resection of small VSs using the middle fossa approach, consecutive adult patients (> 18 years) who underwent surgery between January 2000 and December 2021 were included. Clinical and imaging characteristics were analyzed, including baseline hearing status, duration of surgery, anesthetic parameters, and imaging characteristics of the surgically treated tumors. RESULTS Among the 131 included patients, 102 had valid and discoverable pre- and postoperative audiology assessments. The mean follow-up was 26 months (range 1-180 months). There were 85 patients with serviceable hearing preoperatively, defined as American Academy of Otolaryngology-Head and Neck Surgery (AAO-HNS) class A or B, of whom 78% retained class A or B hearing at the last follow-up. Binary logistic regression demonstrated that preoperative hearing AAO-HNS class (OR 0.19, 95% CI 0.05-0.77; p = 0.02), overlap between fundus and cochlea (OR 0.32, 95% CI 0.11-0.96; p = 0.04), and duration of anesthesia (OR 0.98, 95% CI 0.97-0.99; p = 0.03) were independent predictors of hearing outcomes. Additionally, 75% of patients with high diffusion-weighted imaging signal in the tumor (p = 0.009) and 67% of patients with the tumor originating at the modiolus of the cochlea (p = 0.004) had poor hearing outcomes. CONCLUSIONS The hearing preservation rates after microsurgical resection of small VSs using the middle fossa approach are high, with 78% of patients maintaining AAO-HNS class A or B hearing. Poor hearing status at baseline, longer duration of anesthesia, and large overlap between the fundus of the internal auditory canal and the cochlea were independently associated with unfavorable hearing outcomes. Imaging characteristics can be used to stratify patients' risk of hearing loss.
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Affiliation(s)
- Karol P Budohoski
- 1Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah
| | - Robert C Rennert
- 1Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah
| | - Steven A Gordon
- 2Division of Otolaryngology, University of Utah, Salt Lake City, Utah
| | - Amol Raheja
- 3Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India
| | - Cameron Brandon
- 4College of Medicine, Pennsylvania State University, Hershey, Pennsylvania
| | - J Curran Henson
- 5University of Arkansas for Medical Sciences, Little Rock, Arkansas; and
| | - Mohammed A Azab
- 6Biomolecular Sciences Graduate Programs, Boise State University, Boise, Idaho
| | - Neil S Patel
- 2Division of Otolaryngology, University of Utah, Salt Lake City, Utah
| | - Michael Karsy
- 1Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah
| | - Richard K Gurgel
- 2Division of Otolaryngology, University of Utah, Salt Lake City, Utah
| | - Clough Shelton
- 2Division of Otolaryngology, University of Utah, Salt Lake City, Utah
| | - William T Couldwell
- 1Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah
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Marinelli JP, Lohse CM, Carlson ML. Introducing an Evidence-Based Approach to Wait-And-Scan Management of Sporadic Vestibular Schwannoma. Otolaryngol Clin North Am 2023; 56:445-457. [PMID: 37019767 DOI: 10.1016/j.otc.2023.02.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Abstract
The advent of MRI has led to more sporadic vestibular schwannomas diagnosed today than ever before. Despite the average patient being diagnosed in their sixth decade of life with a small tumor and minimal symptoms, population-based data demonstrate that more tumors per capita are treated today than ever before. Emerging natural history data justify either an upfront treatment approach or the "Size Threshold Surveillance" approach. Specifically, if the patient elects to pursue observation, then existing data support the tolerance of some growth during observation in appropriately selected patients up until a specific size threshold range (about 15 mm of CPA extension). The current article discusses the rationale behind a shift in the existing observation management approach, where initial detection of growth typically begets treatment, and outlines the application of a more flexible and nuanced approach based on existing evidence.
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Kashani RG, Kocharyan A, Claussen AD, Gantz BJ, Hansen MR. Middle Cranial Fossa Approach for Sporadic Vestibular Schwannoma. Otolaryngol Clin North Am 2023; 56:495-507. [PMID: 37019769 DOI: 10.1016/j.otc.2023.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Abstract
The middle fossa approach is an excellent technique for removing appropriate vestibular schwannomas in patients with serviceable hearing. Knowledge of the intricate middle fossa anatomy is essential for optimal outcomes. Gross total removal can be achieved with preservation of hearing and facial nerve function, both in the immediate and long-term periods. This article provides an overview of the background and indications for the procedure, a description of the operative protocol, and a summary of the literature on postoperative hearing outcomes.
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Affiliation(s)
- Rustin G Kashani
- Department of Otolaryngology-Head and Neck Surgery, University of Iowa Hospitals and Clinics, University of Iowa, Iowa City, IA 52242, USA
| | - Armine Kocharyan
- Department of Otolaryngology-Head and Neck Surgery, University of Iowa Hospitals and Clinics, University of Iowa, Iowa City, IA 52242, USA
| | - Alexander D Claussen
- Department of Otolaryngology-Head and Neck Surgery, University of Iowa Hospitals and Clinics, University of Iowa, Iowa City, IA 52242, USA
| | - Bruce J Gantz
- Department of Otolaryngology-Head and Neck Surgery, University of Iowa Hospitals and Clinics, University of Iowa, Iowa City, IA 52242, USA
| | - Marlan R Hansen
- Department of Otolaryngology-Head and Neck Surgery, University of Iowa Hospitals and Clinics, University of Iowa, Iowa City, IA 52242, USA.
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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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Gurgel RK, Couldwell WT, Patel NS, Cannon-Albright LA. Is There an Inherited Contribution to Risk for Sporadic Unilateral Vestibular Schwannoma? Evidence of Familial Clustering. Otol Neurotol 2022; 43:e1157-e1163. [PMID: 36113461 DOI: 10.1097/mao.0000000000003686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECT Unlike the autosomal dominant inheritance of neurofibromatosis 2, there are no known inherited risk factors for sporadic, unilateral vestibular schwannoma (VS), which comprise most VS cases. The authors tested a hypothesis positing a genetic contribution to predisposition to these lesions by analyzing familial clustering of cases. METHODS Familial clustering of individuals with unilateral VS was analyzed in two independent genealogical resources with linked diagnosis data: the Veterans Health Administration Genealogy Resource and the Utah Population Database. Tests for excess relatedness, estimation of relative risks (RRs) in close and distant relatives, and identification of pedigrees with a significant excess of unilateral VS among descendants were performed. RESULTS The average pairwise relatedness of the Veterans Health Administration Genealogy Resource VS cases significantly exceeded the expected relatedness ( p = 0.016), even when close relationships were ignored ( p = 0.002). RR for third- and fifth-degree relatives developing VS were significantly elevated (RR, 60.83; p = 0.0005; 95% confidence interval [CI], 7.37-219.73) and (RR, 11.88; p = 0.013; 95% CI, 1.44-42.90), respectively. No VS-affected first-, second-, or fourth-degree relatives were observed. In the Utah Population Database population, no first- or second-degree relatives with VS were observed. RR for fifth-degree relatives developing VS was significantly elevated (RR, 2.23; p = 0.009; 95% CI, 1.15-3.90). CONCLUSION These results provide strong evidence for an inherited predisposition to sporadic, unilateral VS. This study exhibits the value of genealogical resources with linked medical data for examining hypotheses regarding inherited predisposition. The high-risk unilateral VS pedigrees identified in two independent resources provide a powerful means of pursuing predisposition gene identification.
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Affiliation(s)
- Richard K Gurgel
- Division of Otolaryngology, University of Utah School of Medicine
| | - William T Couldwell
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah
| | - Neil S Patel
- Division of Otolaryngology, University of Utah School of Medicine
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Ren Y, Merna CM, Tawfik KO, Schwartz MS, Friedman RA. Auditory Brain Stem Response Predictors of Hearing Outcomes after Middle Fossa Resection of Vestibular Schwannomas. Skull Base Surg 2022; 83:496-504. [DOI: 10.1055/s-0040-1722718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 11/27/2020] [Indexed: 10/22/2022]
Abstract
Abstract
Objectives To analyze the relationship between preoperative and intraoperative auditory brain stem response (ABR) characteristics and hearing outcomes in patients with vestibular schwannomas (VS) undergoing hearing preservation (HP) surgery via a middle cranial fossa (MCF) approach.
Design Prospective study.
Setting Academic tertiary skull base referral center.
Methods Pre- and postoperative pure-tone average (PTA) and word recognition score (WRS) were examined. Intraoperative ABR wave III latency, wave V latency, and amplitude were recorded. HP was defined as postoperative WRS ≥50%.
Participants Adult patients with VS and WRS ≥50% who underwent MCF tumor resection between November 2017 and September 2019.
Main Outcome Measures Postoperative hearing outcomes.
Results Sixty patients were included. Mean tumor size was 9.2 mm (range, 3–17). HP rates were 56.7% for the cohort and 69.7% for tumors <10 mm. A complete loss of wave V was associated with an 82.9% increase in postoperative PTA (p < 0.001) and 97.2% decrease in WRS (p < 0.001), whereas a diminished wave V was correlated with 62.7% increase in PTA (p < 0.001) and 55.7% decrease in WRS (p = 0.006). A diminished or absent wave V, but not increased wave III/V latency or decreased wave V amplitude, was correlated with a decline in postoperative hearing class (r = 0.735, p < 0.001). Receiver-operating characteristic analysis demonstrated that a stable wave V has the highest accuracy in predicting HP (sensitivity of 82.6%, specificity of 84.8%).
Conclusion Of the examined preoperative and intraoperative ABR characteristics, a stable wave V intraoperatively was the strongest predictor of HP after MCF resection of VS.
Level of Evidence Level III.
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Affiliation(s)
- Yin Ren
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of California, San Diego, San Diego, California, United States
| | - Catherine M. Merna
- Department of Otolaryngology-Head and Neck Surgery, University of California, Irvine, Irvine, California, United States
| | - Kareem O. Tawfik
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of California, San Diego, San Diego, California, United States
- Department of Otolaryngology-Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, United States
| | - Marc S. Schwartz
- Division of Neurosurgery, Department of Surgery, University of California, San Diego, San Diego, California, United States
| | - Rick A. Friedman
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of California, San Diego, San Diego, California, United States
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12
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Rennert RC, Budohoski KP, Gurgel RK, Couldwell WT. Extended middle fossa approach for resection of a petroclival meningioma and vestibular schwannoma. NEUROSURGICAL FOCUS: VIDEO 2022; 6:V5. [PMID: 36284993 PMCID: PMC9558912 DOI: 10.3171/2022.1.focvid21258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 01/21/2022] [Indexed: 11/06/2022]
Abstract
A 69-year-old woman with refractory left facial pain and subtle left hearing decline had a 13.0 × 8.1–mm left petrous apex/Meckel’s cave meningioma and an 8.8 × 5.6–mm left intracanalicular vestibular schwannoma. She was otherwise neurologically intact. The anterior petrous and middle fossa approaches provide ideal access to these lesions individually, so an extended middle fossa approach was used to resect both in the same setting. She was neurologically stable postoperatively, except for a transient abducens palsy. Hearing was preserved on audiogram, and 4-month MRI displayed no tumors. The extended middle fossa approach provides excellent exposure of the petrous apex and internal auditory canal.
The video can be found here: https://stream.cadmore.media/r10.3171/2022.1.FOCVID21258
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Affiliation(s)
- Robert C. Rennert
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah; and
| | - Karol P. Budohoski
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah; and
| | - Richard K. Gurgel
- Division of Otolaryngology–Head and Neck Surgery, University of Utah, Salt Lake City, Utah
| | - William T. Couldwell
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah; and
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13
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Middle fossa approach for a facial nerve schwannoma: how I do it. Acta Neurochir (Wien) 2022; 164:2517-2523. [PMID: 35384500 PMCID: PMC9428036 DOI: 10.1007/s00701-022-05199-6] [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: 01/08/2022] [Accepted: 03/26/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND Facial nerve schwannomas can extend to the middle fossa or the cerebellopontine angle through the labyrinthine and cisternal segments of the facial nerve. The middle fossa approach (MFA) and its extensions provide a wide approach to deal with a large variety of lesions located in the middle and posterior cranial fossa junction. METHODS We describe the MFA along with its advantages and limitations to treat a facial nerve schwannoma involving the middle and posterior cranial fossa. CONCLUSIONS The MFA is a well-established route to surgically deal with tumors located in and around the proximal four segments of the facial nerve.
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14
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Gao B, Zhang Y, Tan J, Ouyang J, Tai B, Cao X, Li T, Hu S. Surgical Treatment and Clinical Outcomes of Petroclival Meningiomas: A Single-Center Experience of 107 Patients. Front Oncol 2021; 11:761284. [PMID: 34881178 PMCID: PMC8647595 DOI: 10.3389/fonc.2021.761284] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 11/04/2021] [Indexed: 11/13/2022] Open
Abstract
Objective This study aimed to establish optimal surgical strategies via reviewing the clinical outcomes of various surgical approaches for the pertroclival meningiomas (PCMs). Methods This retrospective study enrolled 107 patients with PCMs at the authors’ institution from year 2010 to 2020. Patient demographics, the clinical characteristics, various operative approaches, major morbidity, post-operative cranial nerve deficits and tumor progression or recurrence were analyzed. Results The subtemporal transtentorial approach (STA), the Kawase approach (KA), the retrosigmoid approach (RSA) and the anterior sigmoid approach (ASA), namely the posterior petrosal approach (PPA) were adopted for 17 cases, 22 cases, 31 cases and 34 cases respectively. Total or subtotal resection was achieved in 96 cases (89.7%). The incidence of new-onset and aggravated cranial nerve dysfunction were 13.1% (14/107) and 10.4% (15/144), respectively. Furthermore, 14 cases suffered from intracranial infection, 9 cases had cerebrospinal fluid leakage, and 3 cases sustained intracranial hematoma (1 case underwent second operation). The mean preoperative and postoperative Karnofsky Performance Status (KPS) score was 80 (range 60-100) and 78.6 (range 0-100), but this was not statistically significant (P>0.05). After a mean follow-up of 5.1 years (range 0.3- 10.6 years), tumor progression or recurrence was confirmed in 23 cases. Two cases died from postoperative complications. Conclusions For the treatment of PCMs, it is still a challenge to achieve total resection. With elaborate surgical plans and advanced microsurgical skills, most patients with PCMs can be rendered tumor resection with satisfactory extent and functional preservation, despite transient neurological deterioration during early postoperative periods.
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Affiliation(s)
- Baocheng Gao
- Department of Neurosurgery, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Yongfa Zhang
- Department of Neurosurgery, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Jiang Tan
- Department of Neurosurgery, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Jinsong Ouyang
- Department of Neurosurgery, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Bai Tai
- Department of Neurosurgery, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Xianbao Cao
- Department of Ear, Nose and Throat (ENT) and Head and Neck (HN) Surgery, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Tao Li
- Department of Neurosurgery, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Shuang Hu
- Department of Ear, Nose and Throat (ENT) and Head and Neck (HN) Surgery, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
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15
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Delayed Facial Nerve Palsy Following Resection of Vestibular Schwannoma: Clinical and Surgical Characteristics. Otol Neurotol 2021; 43:244-250. [PMID: 34699397 DOI: 10.1097/mao.0000000000003392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Analyze delayed facial nerve palsy (DFNP) following resection of vestibular schwannoma (VS) to describe distinct characteristics and facial nerve (FN) functional course. STUDY DESIGN Prospective cohort with retrospective review. SETTING Academic medical center. PATIENTS Consecutive patients undergoing VS resection 11/2017 to 08/2020. Exclusion criteria: preoperative House-Brackmann (HB) ≥ III, postoperative HB ≥ III without delayed palsy, <30 days follow-up. INTERVENTIONS VS resection with intraoperative electromyographic monitoring. MAIN OUTCOME MEASURES FN outcomes utilizing the HB scale; comparison between patients with DFNP (deterioration greater than one HB grade 24 hours to 30 days postoperatively) vs. those with HBI-II throughout. RESULTS Two hundred eighty-eight patients met criteria: mean age 47.6 years, 36.1% male; 24.0% middle cranial fossa, 28.5% retrosigmoid, 47.6% translabyrinthine. DFNP occurred in 31 (10.8%) patients with average time to onset of 8.1 days. Of these, 22 (71.0%) recovered HBI-II and 3 (9.7%) recovered HBIII. Patients who experienced DFNP, on average, had larger maximum tumor diameter (23.4 vs. 18.7 mm, p = 0.014), lower rate of gross-total resection (54.8% vs. 75.5%, p = 0.014), and lower rate of ≥100 μV FN response to 0.05 mA stimulus intraoperatively (80.6% vs. 94.9%, p = 0.002). Compared to overall incidence of DFNP, translabyrinthine approach demonstrated higher incidence (15.3%, p = 0.017) while retrosigmoid lower (3.7%, p = 0.014). In multivariable logistic regression, patients with FN response ≥100 μV to 0.05 mA stimulus were 72.0% less likely to develop DFNP (p = 0.021). CONCLUSIONS Intraoperative electromyographic facial nerve response, tumor size, surgical approach, and extent of resection may play a role in development of DFNP following resection of VS. Most patients who develop DFNP recover near-normal function.
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16
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Gidley PW, Passer JZ, Page JC, DeMonte F. Middle cranial fossa approach for acoustic neuroma. NEUROSURGICAL FOCUS: VIDEO 2021; 5:V12. [PMID: 36285238 PMCID: PMC9551638 DOI: 10.3171/2021.7.focvid21124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 07/19/2021] [Indexed: 11/12/2022]
Abstract
The middle fossa approach for the resection of small acoustic neuromas is a viable, but underutilized treatment modality with the goal of hearing preservation. The authors aim to demonstrate this approach and its nuances through this video presentation. A 38-year-old man presented with an incidentally discovered small, intracanalicular acoustic neuroma that was initially observed, but growth was noted. The patient had good hearing, and therefore a hearing preservation approach was offered. A gross-total resection was achieved, and the patient maintained good hearing postoperatively. This video demonstrates relevant anatomy, surgical indications, technical aspects of resection, including reconstruction, and postoperative outcomes. The video can be found here: https://stream.cadmore.media/r10.3171/2021.7.FOCVID21124
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17
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Misra BK, Jha AK. Potential Utility of Sodium Fluorescein can Distinguish Tumor from Cranial Nerves in Vestibular Schwannoma Surgery. Neurol India 2021; 69:1087-1088. [PMID: 34507461 DOI: 10.4103/0028-3886.325322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Basant K Misra
- Department of Neurosurgery, Hinduja National Hospital and MRC, Mahim, Mumbai, Maharashtra, India
| | - Ashish K Jha
- Department of Neurosurgery, Hinduja National Hospital and MRC, Mahim, Mumbai, Maharashtra, India
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18
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Hostettler IC, Jayashankar N, Bikis C, Wanderer S, Nevzati E, Karuppiah R, Waran V, Kalbermatten D, Mariani L, Marbacher S, Guzman R, Madduri S, Roethlisberger M. Clinical Studies and Pre-clinical Animal Models on Facial Nerve Preservation, Reconstruction, and Regeneration Following Cerebellopontine Angle Tumor Surgery-A Systematic Review and Future Perspectives. Front Bioeng Biotechnol 2021; 9:659413. [PMID: 34239858 PMCID: PMC8259738 DOI: 10.3389/fbioe.2021.659413] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 04/28/2021] [Indexed: 11/13/2022] Open
Abstract
Background and purpose: Tumorous lesions developing in the cerebellopontine angle (CPA) get into close contact with the 1st (cisternal) and 2nd (meatal) intra-arachnoidal portion of the facial nerve (FN). When surgical damage occurs, commonly known reconstruction strategies are often associated with poor functional recovery. This article aims to provide a systematic overview for translational research by establishing the current evidence on available clinical studies and experimental models reporting on intracranial FN injury. Methods: A systematic literature search of several databases (PubMed, EMBASE, Medline) was performed prior to July 2020. Suitable articles were selected based on predefined eligibility criteria following the Preferred Reporting Items for Systematic Reviews and Meta Analyses (PRISMA) guidelines. Included clinical studies were reviewed and categorized according to the pathology and surgical resection strategy, and experimental studies according to the animal. For anatomical study purposes, perfusion-fixed adult New Zealand white rabbits were used for radiological high-resolution imaging and anatomical dissection of the CPA and periotic skull base. Results: One hundred forty four out of 166 included publications were clinical studies reporting on FN outcomes after CPA-tumor surgery in 19,136 patients. During CPA-tumor surgery, the specific vulnerability of the intracranial FN to stretching and compression more likely leads to neurapraxia or axonotmesis than neurotmesis. Severe FN palsy was reported in 7 to 15 % after vestibular schwannoma surgery, and 6% following the resection of CPA-meningioma. Twenty-two papers reported on experimental studies, out of which only 6 specifically used intracranial FN injury in a rodent (n = 4) or non-rodent model (n = 2). Rats and rabbits offer a feasible model for manipulation of the FN in the CPA, the latter was further confirmed in our study covering the radiological and anatomical analysis of perfusion fixed periotic bones. Conclusion: The particular anatomical and physiological features of the intracranial FN warrant a distinguishment of experimental models for intracranial FN injuries. New Zealand White rabbits might be a very cost-effective and valuable option to test new experimental approaches for intracranial FN regeneration. Flexible and bioactive biomaterials, commonly used in skull base surgery, endowed with trophic and topographical functions, should address the specific needs of intracranial FN injuries.
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Affiliation(s)
- Isabel C Hostettler
- Department of Neurosurgery, Klinikum Rechts der Isar, Technical University Munich, Munich, Germany
| | - Narayan Jayashankar
- Department of Oto-Rhino-Laryngology, Nanavati Super Speciality Hospital, Mumbai, India
| | - Christos Bikis
- Department of Biomedical Engineering, Biomaterials Science Center, University of Basel, Allschwil, Switzerland.,Integrierte Psychiatrie Winterthur - Zürcher Unterland, Winterthur, Switzerland
| | - Stefan Wanderer
- Department of Neurosurgery, Kantonsspital Aarau, Aarau, Switzerland
| | - Edin Nevzati
- Department of Neurosurgery, Kantonsspital Luzern, Lucerne, Switzerland
| | - Ravindran Karuppiah
- Department of Neurosurgery, University Malaya Specialist Centre, University of Malaya, Kuala Lumpur, Malaysia
| | - Vicknes Waran
- Department of Neurosurgery, University Malaya Specialist Centre, University of Malaya, Kuala Lumpur, Malaysia
| | - Daniel Kalbermatten
- Department of Plastic Surgery, University Hospital Geneva, Geneva, Switzerland.,Department of Surgery, Biomaterials and Neuro Tissue Bioengineering, University of Geneva, Geneva, Switzerland
| | - Luigi Mariani
- Department of Neurosurgery, University Hospital of Basel, University of Basel, Basel, Switzerland
| | - Serge Marbacher
- Department of Neurosurgery, Kantonsspital Aarau, Aarau, Switzerland
| | - Raphael Guzman
- Department of Neurosurgery, University Hospital of Basel, University of Basel, Basel, Switzerland.,Department of Biomedicine, Brain Ischemia and Regeneration, University of Basel, Basel, Switzerland.,Department of Biomedical Engineering, Center for Bioengineering and Regenerative Medicine, University of Basel, Basel, Switzerland
| | - Srinivas Madduri
- Department of Surgery, Biomaterials and Neuro Tissue Bioengineering, University of Geneva, Geneva, Switzerland.,Department of Biomedicine, Brain Ischemia and Regeneration, University of Basel, Basel, Switzerland.,Department of Biomedical Engineering, Center for Bioengineering and Regenerative Medicine, University of Basel, Basel, Switzerland
| | - Michel Roethlisberger
- Department of Neurosurgery, University Malaya Specialist Centre, University of Malaya, Kuala Lumpur, Malaysia.,Department of Neurosurgery, University Hospital of Basel, University of Basel, Basel, Switzerland.,Department of Biomedical Engineering, Center for Bioengineering and Regenerative Medicine, University of Basel, Basel, Switzerland
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19
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Tawfik KO, Khan UA, Friedman RA. Treatment of Small Vestibular Schwannomas. CURRENT OTORHINOLARYNGOLOGY REPORTS 2021. [DOI: 10.1007/s40136-020-00326-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Neves Cavada M, Fook-Ho Lee M, Jufas NE, Harvey RJ, Patel NP. Intracanalicular Vestibular Schwannoma: A Systematic Review and Meta-analysis of Therapeutics Outcomes. Otol Neurotol 2021; 42:351-362. [PMID: 33555742 DOI: 10.1097/mao.0000000000002979] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To perform a systematic review and meta-analysis summarizing the current evidence on the management of intracanalicular vestibular schwannoma. DATA SOURCES Embase (1947-), Medline (1946-), Cochrane library (1947-), Scopus (2010-), and CINAHL (1961-) were searched from 1969 to October 5, 2019 (50 years). STUDY SELECTION A search strategy was performed to identify patients with vestibular schwannoma confined to the internal auditory canal without extension to the cerebellopontine angle. Studies with patients aged less than 18, Neurofibromatosis type 2, revision cases, and non-English language were excluded. DATA EXTRACTION A standardized collection sheet was used for the extracted data and a quality assessment was performed using the Newcastle-Ottawa Scale with the comparability criterion omitted. DATA SYNTHESIS Seventy-one studies were included with 24 on observation, 14 on radiotherapy, and 34 on surgery. The primary outcome was serviceable hearing preservation. Secondary outcomes were preservation of facial nerve function, growth, involution, and dizziness. Sub-analysis on the type of surgery and type of radiotherapy were performed. Excel 2016 with MIX 2.0 Pro add-on package was used to analyze the data and create forest plots. Data were presented in proportion with a 95% confidence interval. CONCLUSIONS Serviceable hearing was observed in 31% of patients after observation, 56% after radiotherapy, and 51% after surgical treatment with mean follow-up time of 4.04 years, 4.92 years, and 2.23 years, respectively. Facial nerve function was found to be best preserved in both observation and radiotherapy groups. Vestibular schwannoma growth occurred in 33% of patients under observation. Involution occurred in 2% of patients under observation and in 38% after radiotherapy.
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Affiliation(s)
- Marina Neves Cavada
- Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine and Health Sciences, Macquarie University
- Sydney Adventist Hospital
| | | | - Nicholas Emmanuel Jufas
- Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine and Health Sciences, Macquarie University
- Kolling Deafness Research Centre, University of Sydney & Macquarie University
- Department of Otolaryngology, Head and Neck Surgery, Royal North Shore Hospital
- Discipline of Surgery, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - Richard John Harvey
- Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine and Health Sciences, Macquarie University
- Rhinology and Skull Base Research Group, Applied Medical Research Centre, University of New South Wales
| | - Nirmal P Patel
- Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine and Health Sciences, Macquarie University
- Kolling Deafness Research Centre, University of Sydney & Macquarie University
- Department of Otolaryngology, Head and Neck Surgery, Royal North Shore Hospital
- Discipline of Surgery, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
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21
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Ren Y, MacDonald BV, Tawfik KO, Schwartz MS, Friedman RA. Clinical Predictors of Facial Nerve Outcomes After Surgical Resection of Vestibular Schwannoma. Otolaryngol Head Neck Surg 2020; 164:1085-1093. [PMID: 33048002 DOI: 10.1177/0194599820961389] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
OBJECTIVE To identify clinical predictors of facial nerve (FN) outcomes after microsurgical resection of vestibular schwannoma (VS). STUDY DESIGN Prospective cohort study. SETTING Academic medical center. METHODS Consecutive patients undergoing VS resection from November 2017 to October 2019 were included. FN function was evaluated with the House-Brackmann (HB) scale and stratified into good (HB I-II) and poor (HB III-VI) function. Analyses included descriptive statistics, correlation, and logistic regression. RESULTS Of 256 patients who met criteria (mean age, 47.7 years; 62.5% female), 227 (88.7%) achieved good FN function postoperatively and 238 (93.0%) at latest follow-up (mean, 154.8 days). Operative approaches consisted of translabyrinthine (50.8%), retrosigmoid (25.0%), and middle fossa craniotomies (24.2%). Extent of resection was decided intraoperatively, and gross or near total resection was accomplished in 237 (92.6%) cases. Postoperative HB grade correlated with latest HB grade (0.615, P < .001). Factors associated with good postoperative FN function included small tumor size (≤15 mm; odds ratio [OR], 2.425; P = .042), gross or near total resection (OR, 3.170; P = .041), and ≥100-µV intraoperative FN electromyographic response to a 0.05-mA stimulus (OR, 22.242; P < .001). Factors associated with good FN function at latest follow-up included gross total resection (OR, 7.764; P = .003) and ≥100-µV FN electromyographic response (OR, 8.518; P < .001), accounting for surgical approach and tumor size. CONCLUSION Microsurgical resection of VS can be accomplished with excellent FN outcomes. Gross total resection and ≥100-µV intraoperative FN electromyographic response predicted excellent FN outcomes. Immediate postoperative FN function is a prognosticator of long-term FN function.
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Affiliation(s)
- Yin Ren
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of California at San Diego, La Jolla, California, USA
| | - Bridget V MacDonald
- School of Medicine, University of California at San Diego, La Jolla, California, USA
| | - Kareem O Tawfik
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of California at San Diego, La Jolla, California, USA.,Department of Otolaryngology-Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Marc S Schwartz
- Department of Neurosurgery, University of California at San Diego, La Jolla, California, USA
| | - Rick A Friedman
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of California at San Diego, La Jolla, California, USA
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22
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Preet K, Ong V, Sheppard JP, Udawatta M, Duong C, Romiyo P, Nguyen T, Kwan I, Yang I. Postoperative Hearing Preservation in Patients Undergoing Retrosigmoid Craniotomy for Resection of Vestibular Schwannomas: A Systematic Review of 2034 Patients. Neurosurgery 2020; 86:332-342. [PMID: 31149722 DOI: 10.1093/neuros/nyz147] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 01/12/2019] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Vestibular schwannomas (VS) are benign tumors derived from Schwann cells ensheathing the vestibulocochlear nerve. The retrosigmoid (RS) surgical approach is useful to resect tumors of multiple sizes while affording the possibility of preserving postoperative hearing. OBJECTIVE To conduct a systematic review of published literature investigating hearing preservation rates in patients who underwent the RS approach for VS treatment. METHODS The PubMed, Scopus, and Embase databases were surveyed for studies that reported preoperative and postoperative hearing grades on VS patients who underwent RS treatment. Hearing preservation rates were calculated, and additional patient demographic data were extracted. Tumor size data were stratified to compare hearing preservation rates after surgery for intracanalicular, small (0-20 mm), and large (>20 mm) tumors. RESULTS Of 383 deduplicated articles, 26 studies (6.8%) met eligibility criteria for a total of 2034 patients with serviceable preoperative hearing, for whom postoperative hearing status was evaluated. Aggregate hearing preservation was 31% and 35% under a fixed and random effects model, respectively. A mixed effects model was used to determine hearing preservation rates depending on tumor size, which were determined to be 57%, 37%, and 12% for intracanalicular, small, and large tumors, respectively. Significant cross-study heterogeneity was found (I2 = 93%, τ2 = .964, P < .01; Q = 287.80, P = < .001), with rates of hearing preservation ranging from 0% to 100%. CONCLUSION Tumor size may have an effect on hearing preservation rates, but multiple factors should be considered. Discussion of a patient's expectations for hearing preservation is critical when deciding on VS treatment plans.
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Affiliation(s)
- Komal Preet
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California
| | - Vera Ong
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California
| | - John P Sheppard
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California
| | - Methma Udawatta
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California
| | - Courtney Duong
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California
| | - Prasanth Romiyo
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California
| | - Thien Nguyen
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California
| | - Isabelle Kwan
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California
| | - Isaac Yang
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California.,David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California.,Department of Head and Neck Surgery, University of California, Los Angeles, Los Angeles, California.,Department of Radiation Oncology, University of California, Los Angeles, Los Angeles, California.,Jonsson Comprehensive Cancer Center, Ronald Reagan UCLA Medical Center, University of California, Los Angeles, Los Angeles, California.,Los Angeles Biomedical Research Institute, Harbor UCLA Medical Center, University of California, Los Angeles, Los Angeles, California
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23
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Eser Ocak P, Dogan I, Ocak U, Dinc C, Başkaya MK. Facial nerve outcome and extent of resection in cystic versus solid vestibular schwannomas in radiosurgery era. Neurosurg Focus 2019; 44:E3. [PMID: 29490554 DOI: 10.3171/2017.12.focus17667] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Cystic vestibular schwannomas (CVSs) are a subgroup of vestibular schwannomas (VSs) that are reported to be associated with unpredictable clinical behavior and unfavorable postoperative outcomes. The authors aimed to review their experience with microsurgical treatment of CVSs in terms of extent of resection and postoperative facial nerve (FN) function and compare these outcomes with those of their solid counterparts. METHODS Two hundred-eleven VS patients were treated surgically between 2006 and 2017. Tumors were defined as cystic when preoperative neuroimaging demonstrated cyst formation that was confirmed by intraoperative findings. Solid VS (SVSs) with similar classes were used for comparison. Clinical data of the patients were reviewed retrospectively, including clinical notes and images, as well as operative, pathology, and neuroradiology reports. RESULTS Thirty-two patients (20 males and 12 females) with a mean age of 52.2 years (range 17-77 years) underwent microsurgical resection of 33 CVSs (mean size 3.6 cm, range 1.5-5 cm). Forty-nine patients (26 males and 23 females) with a mean age of 49.9 years (range 21-75 years) underwent microsurgical resection of 49 SVSs (mean size 3 cm, range 2-4.5 cm). All operations were performed via either a retrosigmoid or a translabyrinthine approach. Gross-total resection was achieved in 30 cases in the CVS group (90.9%) and 37 in the SVS group (75.5%). The main reason for subtotal and near-total resection was adherence of the tumor to the brainstem and/or FN in both groups. None of the patients with subtotal or near-total resection in the CVS group demonstrated symptomatic regrowth of the tumor during the mean follow-up period of 41.6 months (range 18-82 months). The FN was anatomically preserved in all patients in both groups. Good FN outcomes were achieved in 15 of CVS (grade I-II; 45.5%) and 35 of SVS (71.4%) surgeries at discharge. Good and fair FN functions were noted in 22 (grade I-II; 81.5%) and 5 (grade III only; 18.5%) of the CVS patients, respectively, at the 1-year follow-up; none of the patients showed poor FN function. CONCLUSIONS Surgery of CVSs does not necessarily result in poor outcomes in terms of the extent of resection and FN function. Special care should be exercised to preserve anatomical continuity of the FN during surgery, since long-term FN function outcomes are much more satisfactory than short-term results. High rates of gross-total resection and good FN outcomes in our study may also suggest that microsurgery stands as the treatment of choice in select cases of large CVSs and SVSs in the era of radiosurgery.
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Shinoura N, Midorikawa A, Hiromitsu K, Saito S, Yamada R. Preservation of cranial nerve function following awake surgery for benign brain tumors in 22 consecutive patients. J Clin Neurosci 2019; 61:189-195. [PMID: 30782318 DOI: 10.1016/j.jocn.2018.10.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 10/07/2018] [Indexed: 11/15/2022]
Abstract
BACKGROUND Preservation of cranial nerve function in patients with benign tumors such as meningiomas and vestibular schwannomas remains difficult following microsurgery. METHODS In this study, awake surgery was performed in 22 consecutive patients with meningiomas or vestibular schwannomas that compressed cranial nerves (I-XII). Improved, unchanged, or deteriorated cranial nerve function after surgery was evaluated. RESULTS The function of 44 cranial nerves in 22 consecutive patients who underwent awake surgery for meningiomas or vestibular schwannomas improved, was unchanged, or deteriorated in eight, 35, and one nerves, respectively. Regarding the function of the olfactory (Ist) nerve, which is difficult to preserve, hyposmia improved after surgery in two patients with olfactory groove meningiomas. Regarding the auditory (VIIIth) nerve, which is also difficult to preserve, the function was improved, unchanged, or deteriorated after surgery in two, 11, and one patients, respectively, with cerebello-pontine angle meningiomas or vestibular schwannomas. In all patients with serviceable auditory function before surgery, function was preserved after surgery. In the same patients, the function of the facial (VIIth) nerve was also preserved after surgery in all patients. CONCLUSIONS These results suggest that awake surgery for benign brain tumors such as meningiomas and vestibular schwannomas is associated with low patient morbidity regarding cranial nerve function.
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Affiliation(s)
- Nobusada Shinoura
- Department of Neurosurgery, Komagome Metropolitan Hospital, 3-18-22 Hon-komagome, Bunkyo-ku, Tokyo 113-8677, Japan.
| | - Akira Midorikawa
- Department of Psychology, Chuo University of Literature, 742-1 Higashi-nakano, Hachioji City, Tokyo 192-0393, Japan
| | - Kentaro Hiromitsu
- Department of Psychology, Chuo University of Literature, 742-1 Higashi-nakano, Hachioji City, Tokyo 192-0393, Japan
| | - Syoko Saito
- Department of Psychology, Chuo University of Literature, 742-1 Higashi-nakano, Hachioji City, Tokyo 192-0393, Japan
| | - Ryoji Yamada
- Department of Neurosurgery, Komagome Metropolitan Hospital, 3-18-22 Hon-komagome, Bunkyo-ku, Tokyo 113-8677, Japan
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Lovato A, García ibañez E, García ibañez L, Filippis C. Tumor growth rate: A new prognostic indicator of hearing preservation in vestibular schwannoma surgery. Laryngoscope 2019; 129:2378-2383. [DOI: 10.1002/lary.27805] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 10/12/2018] [Accepted: 12/19/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Andrea Lovato
- Department of NeurosciencesUniversity of Padova, Audiology Unit at Treviso Hospital Treviso Italy
| | | | | | - Cosimo Filippis
- Department of NeurosciencesUniversity of Padova, Audiology Unit at Treviso Hospital Treviso Italy
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Montaser AS, Todeschini AB, Harris MS, Adunka OF, Prevedello DM. Role of Endoscopy in Resection of Intracanalicular Vestibular Schwannoma via Middle Fossa Approach: Technical Nuances. World Neurosurg 2018; 120:395-399. [DOI: 10.1016/j.wneu.2018.08.215] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 08/26/2018] [Accepted: 08/29/2018] [Indexed: 11/25/2022]
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Surgical outcome in smaller symptomatic vestibular schwannomas. Is there a role for surgery? Acta Neurochir (Wien) 2018; 160:2263-2275. [PMID: 30229403 DOI: 10.1007/s00701-018-3674-x] [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: 03/06/2018] [Accepted: 09/07/2018] [Indexed: 10/28/2022]
Abstract
BACKGROUND Currently, there is no consensus in the initial management of small vestibular schwannomas (VSs). They are routinely watched and/or referred for radiosurgical treatment, although surgical removal is also an option. We hereby evaluate clinical outcomes of patients who have undergone surgical removal of smaller symptomatic VSs. METHODS Patients with vestibular schwannomas (grade T1-T3b according to Hannover classification) were reviewed. Patients with symptomatic tumors who underwent surgery were evaluated. Their preoperative hearing status was based on the guideline of the committee on hearing and equilibrium of the American Academy of Otolaryngology-Head and Neck Surgery (AAO-HNS) foundation. Their postoperative facial nerve function, hearing status, vestibular symptoms, and degree of tumor resection were assessed. RESULTS Thirty patients were selected for surgery via a retrosigmoid approach based on their age, symptoms, and their own decision-making after discussion of management options. Most patients presented with hearing loss. Seventeen patients had useful hearing preoperatively. Among them, 10 patients (59%) preserved useful hearing (class A or B) postoperatively. MRI at 1-year follow-up confirmed complete resection in 26/29 patients. Also, 29 patients (97%) had HB grade I-II, and 1 patient had HB III at 1-year follow-up. Except for 1 patient with CSF leak, 1 patient with delayed facial nerve palsy, and 2 patients with asymptomatic sigmoid sinus occlusion, there were no other new morbidities. CONCLUSION Although both observation and radiosurgery are valid options in the management of smaller size vestibular schwannomas, surgical treatment seems to offer a high rate of facial nerve preservation, a reasonable rate of hearing sparing, and a high total resection rate. Clinicians should consider surgical treatment as a valid option in the initial management of symptomatic small vestibular schwannomas in younger patients.
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Hearing Outcomes in Conservatively Managed Vestibular Schwannoma Patients With Serviceable Hearing. Otol Neurotol 2018; 39:e704-e711. [DOI: 10.1097/mao.0000000000001914] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kosty JA, Stevens SM, Gozal YM, DiNapoli VA, Patel SK, Golub JS, Andaluz NO, Pensak M, Zuccarello M, Samy RN. Middle Fossa Approach for Resection of Vestibular Schwannomas: A Decade of Experience. Oper Neurosurg (Hagerstown) 2018; 16:147-158. [DOI: 10.1093/ons/opy126] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 04/26/2018] [Indexed: 11/13/2022] Open
Abstract
AbstractBACKGROUNDThe middle cranial fossa (MCF) approach is a challenging surgical technique for the resection of small and intermediate sized, primarily intracanalicular, vestibular schwannomas (VS), with the goal of hearing preservation (HP).OBJECTIVETo describe a decade-long, single institutional experience with the MCF approach for resection of VS.METHODSThis is a retrospective cohort study of 63 patients who underwent the MCF approach for resection of VS from 2006 to 2016. Audiometric data included pure-tone average (PTA), low-tone pure-tone average (LtPTA), word recognition score, and American Academy of Otolaryngology-Head and Neck Surgery (AAO-HNS) hearing classification at presentation and follow-up. Patients with postoperative serviceable (AAO-HNS class A-B) and/or useful (AAO-HNS class A-C) hearing were compared to those without HP. Facial nerve function was assessed using the House–Brackmann scale.RESULTSThe mean age and duration of follow-up were 50 ± 13 yr and 21 ± 21 mo, respectively. The mean tumor size was 10 ± 4 mm. The serviceable and usable HP rates were 54% and 50%, respectively. Some residual hearing was preserved in 71% of patients. Large tumor size (P = .05), volume (P = .03), and extrameatal tumor extension (P = .03) were associated with poor audiometric outcomes. The presence of a fundal fluid cap (P = .01) was a favorable finding. At definitive testing, LtPTA was significantly better preserved than traditional PTA (P = .01). Facial nerve outcomes, tumor control rates, and durability of audiometric outcomes were excellent. 47% of patients pursued aural rehabilitation.CONCLUSIONIn our series, the MCF approach for VS provided excellent rates of tumor and facial nerve function, with durable serviceable HP.
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Affiliation(s)
- Jennifer A Kosty
- Department of Neurosurgery, University of Cincinnati Medical Center, Cincinnati, Ohio
| | - Shawn M Stevens
- Department of Otolaryngology Head and Neck Surgery, University of Cincinnati Medical Center, Cincinnati, Ohio
| | - Yair M Gozal
- Department of Neurosurgery, University of Cincinnati Medical Center, Cincinnati, Ohio
| | - Vincent A DiNapoli
- Department of Neurosurgery, University of Cincinnati Medical Center, Cincinnati, Ohio
| | - Smruti K Patel
- Department of Neurosurgery, University of Cincinnati Medical Center, Cincinnati, Ohio
| | - Justin S Golub
- Department of Otolaryngology—Head and Neck Surgery, Columbia University Irving Medical Center, New York, New York
| | - Norberto O Andaluz
- Department of Neurosurgery, University of Cincinnati Medical Center, Cincinnati, Ohio
| | - Myles Pensak
- Department of Otolaryngology Head and Neck Surgery, University of Cincinnati Medical Center, Cincinnati, Ohio
| | - Mario Zuccarello
- Department of Neurosurgery, University of Cincinnati Medical Center, Cincinnati, Ohio
- Department of Otolaryngology Head and Neck Surgery, University of Cincinnati Medical Center, Cincinnati, Ohio
| | - Ravi N Samy
- Department of Neurosurgery, University of Cincinnati Medical Center, Cincinnati, Ohio
- Department of Otolaryngology Head and Neck Surgery, University of Cincinnati Medical Center, Cincinnati, Ohio
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Hatch J, Oyer SL. Vestibular Schwannoma Complicated by Facial Paralysis: Considerations of Techniques and Timing for Facial Reanimation. CURRENT OTORHINOLARYNGOLOGY REPORTS 2018. [DOI: 10.1007/s40136-018-0201-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Shinoura N, Midorikawa A, Hiromitsu K, Saito S, Yamada R. Preservation of hearing following awake surgery via the retrosigmoid approach for vestibular schwannomas in eight consecutive patients. Acta Neurochir (Wien) 2017; 159:1579-1585. [PMID: 28674732 DOI: 10.1007/s00701-017-3235-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 05/31/2017] [Indexed: 12/21/2022]
Abstract
BACKGROUND Hearing preservation in patients with vestibular schwannomas remains difficult by microsurgery or radiosurgery. METHOD In this study, awake surgery via the retrosigmoid approach was performed for vestibular schwannomas (volume, 11.6 ± 11.2 ml; range, 1.3-26.4 ml) in eight consecutive patients with preoperative quartering of pure tone audiometry (PTA) of 53 ± 27 dB. RESULTS After surgery, hearing was preserved in seven patients and improved in one patient. The postoperative quartering PTA was 51 ± 21 dB. Serviceable hearing (class A + B + C) using the American Association of Otolaryngology-Head and Neck Surgery (AAO-HNS) classification was preserved in all patients. Preoperative useful hearing (AAO-HNS class A + B) was observed in three patients, and useful hearing was preserved in all three of these patients after surgery. In addition, useful facial nerve function (House-Blackmann Grade 1) was preserved in all patients. CONCLUSIONS These results suggest that awake surgery for vestibular schwannomas is associated with low patient morbidity, including with respect to hearing and facial nerve function.
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Middle fossa approach for resection of vestibular schwannoma. Acta Neurochir (Wien) 2017; 159:1023-1026. [PMID: 28397138 DOI: 10.1007/s00701-017-3169-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 03/27/2017] [Indexed: 10/19/2022]
Abstract
BACKGROUND Surgical approaches for removal of vestibular schwannoma are done through retrosigmoid, translabyrinthine, or middle fossa approaches, depending on the tumor size, preoperative hearing status, surgical team experience, and patient preference. The middle fossa approach (MFA) for the vestibular schwannoma (VS) route preserves hearing and can be done with minimal morbidity and mortality. METHOD The authors discuss the surgical anatomy of the middle fossa, internal auditory canal localization techniques, MFA indications and the procedure for VS removal, and outcome. CONCLUSION Unlike otolaryngologists, who use the MFA to treat various pathological processes that involve the inner or middle ear, many neurosurgeons are unfamiliar with the MFA. Nevertheless, learning the technical nuances of the MFA adds to the neurosurgeon's armamentarium, especially for treatment of small intracanalicular VSs in young patients who wish to preserve hearing.
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Kang WS, Kim SA, Yang CJ, Nam SH, Chung JW. Surgical outcomes of middle fossa approach in intracanalicular vestibular schwannoma. Acta Otolaryngol 2017; 137:352-355. [PMID: 27885877 DOI: 10.1080/00016489.2016.1255992] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
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. OBJECTIVES To investigate surgical outcomes and clinical efficiency of MFA in vestibular schwannoma. METHODS A retrospective study was done in 14 patients who underwent MFA for vestibular schwannoma in Asan Medical Center. RESULTS The median age at diagnosis was 46.3 years. At initial presentation, 57% of the patients had vertigo, 43% hearing disturbance, and 64% tinnitus. The mean tumor size was 9.7 mm. The tumors were completely resected in 86% of the patients. Hearing was post-operatively preserved in 12 patients and two patients lost their hearing following surgery. Facial nerve function post-operatively remained unchanged in 12 patients (86%).
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Affiliation(s)
- Woo Seok Kang
- Department of Otorhinolaryngology-Head & Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Shin Ae Kim
- Department of Otorhinolaryngology-Head & Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Chan Joo Yang
- Department of Otorhinolaryngology-Head & Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Sung Hoon Nam
- Department of Otorhinolaryngology-Head & Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Jong Woo Chung
- Department of Otorhinolaryngology-Head & Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
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Turek G, Cotúa C, Zamora RE, Tatagiba M. Endoscopic assistance in retrosigmoid transmeatal approach to intracanalicular vestibular schwannomas - An alternative for middle fossa approach. Technical note. Neurol Neurochir Pol 2017; 51:111-115. [PMID: 28162791 DOI: 10.1016/j.pjnns.2016.12.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Accepted: 12/22/2016] [Indexed: 10/20/2022]
Abstract
BACKGROUND Complete surgical removal of intracanalicular vestibular schwannomas with nerve VII and VIII sparing and without worsening patient's status is challenging. Also the choice of an optimal surgical technique, which is usually limited to selection between retrosigmoid transmeatal (RT) and middle fossa (MF) approach, can be a challenge. Although many previous studies documented superiority of RT to MF approach and vice versa, still no consensus has been reached regarding an optimal approach to intracanalicular vestibular schwannomas. In this technical note, we present RT approach with an endoscopic assistance and highlight its advantages over MF approach in surgical management of pure intracanalicular vestibular schwannomas. METHOD RT approach with an endoscopic assistance is presented as an optimal surgical treatment for intracanalicular vestibular schwannomas, and its advantages are compared to those offered by MF approach. RESULTS Under an endoscopic guidance, we found a residual tumor in the fundus of the inner acoustic canal and performed its gross total resection. CONCLUSIONS RT approach is an excellent technique suitable for safe radical surgical treatment of T1 vestibular schwannomas; this technique is associated with lower morbidity risk than MF approach.
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Affiliation(s)
- Grzegorz Turek
- Department of Neurosurgery, Eberhard-Karls-University of Tübingen, Tübingen, Germany.
| | - Carlos Cotúa
- Department of Neurosurgery, Eberhard-Karls-University of Tübingen, Tübingen, Germany
| | | | - Marcos Tatagiba
- Department of Neurosurgery, Eberhard-Karls-University of Tübingen, Tübingen, Germany
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