| Hearing preservation in retrosigmoid approach of small vestibular schwannomas: prognostic value of the degree of internal auditory canal filling. | |
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MedLine Citation:
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PMID: 21113987 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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OBJECTIVES: To assess the contribution of preoperative radiologic appearance of vestibular schwannoma (VS) on the magnetic resonance imaging in constructive interference in steady-state sequences and demonstrate if the degree of the internal auditory canal (IAC) filling is correlated with hearing and facial preservation. PATIENTS: A group of 278 patients who underwent VS surgery in a tertiary referral center. INTERVENTION: Retrosigmoid approach surgery. MAIN OUTCOME MEASURES: Patients were classified in 4 groups according to the percentage of IAC filling on the preoperative magnetic resonance imaging as Group IAC 1(IAC empty or filled <25% and with free fundus), Group IAC 2 (IAC filled from 25% to 50% with free fundus), Group IAC 3 (IAC filled from 50% to 75% with free fundus), and Group IAC 4 (complete filling of the IAC without fundus obliteration). RESULTS: A good correlation was observed between the IAC classification and the rate of hearing and facial preservation. The global rate of postoperative facial palsy was 10.4%. The global rate of hearing preservation in 213 patients with preoperative hearing class A and B was 40.8%. Regression analysis showed that the degree of lateral extension of the VS in the IAC was a strong predictor of hearing preservation ( p < 0.04). CONCLUSION: The retrosigmoid approach yields good facial outcomes in selected patients with possible hearing preservation. In case of patient with small tumor and IAC empty or filled less than 75% and with free fundus, surgery is the treatment of choice for patients with serviceable hearing and the desire to retain it. |
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Authors:
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Stéphane Tringali; Chantal Ferber-Viart; Carine Fuchsmann; Guillaume Buiret; Sandra Zaouche; Christian Dubreuil |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology Volume: 31 ISSN: 1537-4505 ISO Abbreviation: Otol. Neurotol. Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-11-26 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100961504 Medline TA: Otol Neurotol Country: United States |
Other Details:
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Languages: eng Pagination: 1469-72 Citation Subset: IM |
Affiliation:
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Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Département d'Otologie et d'Otoneurotologie, Pierre-Bénite, France. stephane.tringali@chu-lyon.fr |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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