[An intralabyrinthine and intratympanic acoustic neuroma (author's transl)]

An intra labyrinthine acoustic neuroma, which had simulated otitis media, is reported. The tumour had extended into the cavum tympani over the basal turn of the cochlea and into all the seimicircular canals. The bulk of the tumour lay in a wide defect between the vestibule and the fundus of the internal auditory canal. The literature on intralabyrinthine neuromas is reviewed.