Functional and Histological Findings in Acoustic Tumor

A patient with bilateral acoustic neurofibroma was repeatedly examined audiometrically during the progression of the disease. Postmortem, the temporal bone disease was studied to confirm severe progressive hearing dysfunction found in serial audiometric examinations. Results of the electronystagmographic examination showed bilateral absence of caloric nystagmus. Bilateral absence of the response was also shown by the galvanic body sway test.