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  • Title: Auditory brain stem responses in the diagnosis of cerebellopontine angle tumours.
    Author: Terkildsen K, Huis in't Veld F, Osterhammel P.
    Journal: Scand Audiol; 1977; 6(1):43-7. PubMed ID: 304240.
    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 Jewettv-FFP7 complex.
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