The authors report a case of neurilemoma of the trigemial nerve involving the base of the skull in a 33-year-old male.
Otoneurological examination revealed less prominent caloric nystagmus as compared to the cases with acoustic neuromas, while optokinetic and eye-tracking tests showed findings similar to those of acoustic neuromas.
In roentogenograms, a bony defect was confirmed at the apex of the petrosal bone without enlargement of the internal auditory meatus.
Computerized tomography has been found to be of great value in diagnosis of the disease and in determination of its location, size and nature.
