A 55 year old man presents with impaired hearing and tinnitus of his right ear for 3 years. There was no history of trauma, headache, convulsions, episodes of vomiting, or prolonged exposure to loud noise. His medical history is unremarkable and he is not on any medications.
There is a R/s sensorineural hearing loss affecting high frequencies.
All indices in the cerebrospinal fluid (CSF) analysis report are within normal parameters.
There is a 1.7cm x 2.2cm mass at the right cerebellopontine angle, entering the internal auditory meatus; the imaging characteristics are suggestive of an acoustic neuroma.
Anteroposterior and lateral x-rays of the skull appear normal.