聴神経腫瘍の診断・治療の問題点

概要

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We studied the cost-effectiveness and relative performance of numerical examinations in diagnosing vestibular schwannoma (VS), and problems in VS treatment. We checked VS prevalence in 1,860 suspected subjects, clinical examination sensitivity and specificity such as auditory brainstem response (ABR), X-ray imaging, equilibrium test, speech discrimination score, computed tomography (CT), and magnetic resonance imaging (MRI). VS prevalence in the 1,860 was 1.7%. ABR sensitivity and specificity were superior to other clinical examinations but CT and/or MRI, making ABR the most efficient, economical screening for diagnosing VS. The 5% occurrence of false-negative ABR cases must, however, be taken into careful account. Our treatment implements ultrasonic bone curettage to open the internal auditory canal to remove VS. We also reviewed types of post-treatment follow-up.
2011-10-01