Vestibular schwannomas also called acoustic neuromas, are extra-axial slow-growing benigntumors developing from Schwann cells of the vestibular portion of the 8th cranial nerve. These tumors account for ~8% of all primary intracranial tumors .They are due to an overproduction of Schwann cells .The tumor, which develops in a closed and rigid environment (bone, skull), will compress the nerve fibers intended for the auditory systems usually causing unilateral or asymmetric hearing loss. As the tumor grows, it can interfere with the face nerves (the trigeminal and facial nerves), causing facial numbness and paralysis.

Bilateral vestibular schwannomas is mostly associated to the presence of neurofibromatosis type 2 (NF2). This genetic disease is characterized by the development of meningiomas, spinal cord tumors, and schwannomas in multiple cranial nerves. Radiologically, T1-weighted MRI sections demonstrate the presence of an expansive mass of the left pontocerebellar angle that extends into the ear canal. This mass is slightly more hypointense than the cerebellar parenchyma. It compresses the side edge of the pons. It has an ice cream cone appearance. The intracanalicular component represents the cone and the cerebellopontine angle (CPA) (cisternal) component representing the ice cream ball (Figure 1).