A preliminary study of clinical applications of auditory brainstem response in neurotology

The advent of the Auditory Brainstem Response (ABR) has markedly enhanced detecting site of lesion in hearing patients suspected of having an VIIIth nerve tumour. In these patients, changes may occur in latency, morphology, or both in the affected ear. Four clinical cases illustrating the usefulness of the ABR test as a cross-check of medical imaging procedures in the evaluation of patients suspected of having VIIIth nerve tumours are presented.