Cerebellopontine angle syndrome is a medical condition that affects the area located between the brainstem and the cerebellum. This condition is commonly referred to as acoustic neuroma, which is a benign tumor that develops in the nerve cells responsible for hearing and balance. Other synonyms for this syndrome include neurinoma, vestibular schwannoma, and acoustic neuritis. Symptoms of the syndrome include tinnitus, hearing loss, vertigo, imbalance, and facial numbness. Treatment options for cerebellopontine angle syndrome may include surgery, radiation therapy, or observation. Early diagnosis and prompt treatment can improve the prognosis of this condition.