Abstract
The case was a 60-year-old male, who had an early cerebellopontine-angle tumor in the better hearing ear (left ear).
His chief complaint was hearing loss with sudden onset at the contralateral ear (right ear). The bilateral sensorineural hearing loss-worse in the right-was documented by audiograms.
ABR revealed the prolongation of I-III IPL in the better hearing ear and MRI showed a left cerebellopontine-angle tumor of 1cm diameter in size. However he complained of no symptom in the left ear.
Our final decision was to follow up this patient without any surgical treatment. In two years after his initial visit to our out-patient clinic, he noticed no symptom at the left side.
