Neurofibromatosis type 2 (NF2) is a hereditary condition commonly associated with the symmetrical development of benign brain tumours in the region of both the auditory and vestibular nerves. NF2, despite being incurable, can be treated by surgical tumour removal.

The symptoms of a tumour of the auditory vestibular nerve include hearing loss (98 %), tinnitus (70 %), vestibular disorders (67 %), and also unsteady gait and headaches as well as numbness and paralysis of the facial nerve.

The most common tumour of the cerebellopontine angle is the acoustic neuroma (which, strictly speaking,is called vestibular schwannoma; it affects the nerves that helps with balance).