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Are stage IV vestibular schwannomas preoperatively different from other stages?

April 26, 2017different IV preoperatively schwannomas Stage stages vestibular

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Are stage IV vestibular schwannomas preoperatively different from other stages?

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OBJECTIVE: The aim of this study was to focus on the clinical and paraclinical symptoms of patients suffering from Stage IV vestibular schwannomas (VSs). PATIENTS: In this prospective study, we included 734 patients who have VS and candidates for operation. MAIN OUTCOME MEASURES: Patients were classified as having Stage I, II, III, or IV tumors according to Tos criteria as evaluated by magnetic resonance imaging. PREOPERATIVE CLINICAL EVALUATION: We recorded the occurrence of complaints (%) and duration (yr) of hearing loss, tinnitus, and balance disorder. Preoperative paraclinical evaluation included pure-tone (PTA) and speech audiometry, auditory brainstem response (ABR) patterns, and vestibular deficit at videonystamography (VNG). Continuous variables were compared between Stage IV and other stages using analysis of variance. Qualitative variables expressed as a percentage of presence were compared between Stage IV and other stages using percentage comparison. RESULTS: Quantitative