[Value of auditory evoked potentials of the cerebral brainstem in the diagnosis of retrocochlear tumors]. / Valor de los potenciales evocados auditivos del tronco cerebral en el diagnóstico de patología tumoral retrococlear.

The use of auditory brainstem response (ABR) in the diagnosis of retrocochlear tumoral pathology has been established for years, but the development of magnetic resonance imaging for the same purpose calls for a review of the value of this method. We studied 200 ABR records made to exclude pathology. The results indicate that ABR is useful as a screening method in this type of pathology when carried out in a population with any auditory symptom, although it was not very suggestive. In most positive tests, the presence of pathology is not confirmed.