期刊
LARYNGOSCOPE
卷 118, 期 11, 页码 1909-1916出版社
WILEY
DOI: 10.1097/MLG.0b013e31818226cb
关键词
Vestibular schwannoma; acoustic neuroma; stereotactic radiosurgery; microsurgery; disequilibrium; imbalance; vertigo; gamma knife
Objectives: To date, numerous studies have compared functional outcomes between stereotactic-radiosurgery (SRS) and microsurgery (MS) in the treatment of vestibular schwannomas (VS). However, most of them involve tumors of difference size, radiation dosages and surgical approaches. Few have systematically compared issues of dysequilibrium. By studying only patients with small tumors and no hearing, we sought to minimize confounding variables. Study Design: A retrospective chart review and telephone questionnaire. Methods: From 1998-2006, 31 patients with small (<1.5 cm) Vs and nonserviceable hearing (American Academy of Otolaryngology-Head and Neck surgery [AAO HNS] Class C or D were treated at our institution. Twenty-two were available for followup and telephone questionnaire including the University of California, Los Angeles Dizziness Questionnaire (UCLA DQ). Twelve underwent SRS and 10 underwent MS. All MS patients underwent the translabyrinthine approach to their tumors. Outcomes measurements included tumor control, facial nerve function, tinnitus, trigeminal function, and imbalance. Results: Patients undergoing SRS had comparable rates of tumor control, facial nerve function, tinnitus, and trigeminal function to MS patients. However, SRS did result in statistically significantly worse long-term imbalance when compared with MS patients. Detailed comparisons of the two modalities are made. Conclusions: In our study population patients with small tumors and no serviceable hearing these data suggest that MS results in comparable minimal morbidity with SRS, though post treatment dysequilibrium is significantly decreased. While the authors recommend translabyrinthine resection of small Vs with no hearing in patients able to tolerate surgery the need for further prospective investigation is clear.
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