Auditory Brain Stem Responses in the Diagnosis of Cerebellopontine Angle Tumours

1 January 1977

journal article
case report
Published by Taylor & Francis in Scandinavian Audiology

Vol. 6 (1) , 43-47
https://doi.org/10.3109/01050397709044997

Abstract

There is a constant search for more reliable methods of diagnosing cerebellopontine angle tumours at an early stage. The auditory brain stem responses promise to be of use as such a method. In two patients with extracanalicular neurinomas we found a definitely abnormal brain stem response even though conventional tests produced a cochlear type of test pattern. In a third patient with a meningeoma we obtained a similar type of response. Here the conventional tests clearly pointed to the presence of retrocochlear disease. Characteristic findings are a broadening of the whole nerve action potential and a delay in the appearance of the Jewett5-FFP7 complex.

Keywords

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