Acoustic Neuroma

Excerpt

Acoustic neuroma is also known by other names such as vestibular schwannoma (VS), acoustic neurinoma, vestibular neuroma, and acoustic neurofibroma. These tumors originate from the Schwann cells in the sheath surrounding the vestibular and cochlear nerves. Acoustic neuroma can occur either intracranially or extra-axially.

Acoustic neuromas are commonly located in the cerebellopontine angle, near the cochlear and vestibular nerves, particularly the inferior division of the vestibular nerve. About 5% to 10% of tumors in the cerebellopontine angle (CPA) are meningiomas, which may occur elsewhere in the brain. While most cases are sporadic, bilateral acoustic neuromas are typically associated with type 2 neurofibromatosis.