Vestibular Schwannoma is a type of tumor that grows on the vestibular nerve of the inner ear. While this term is the most commonly used to describe this condition, there are other synonyms that are sometimes used interchangeably. These include acoustic neuroma, acoustic tumor, and Schwannoma of the eighth cranial nerve. These synonyms all refer to the same type of tumor, which can cause hearing loss, dizziness, and balance problems. While a vestibular Schwannoma is usually benign, it still requires treatment to prevent further complications. If you have been diagnosed with this condition, your doctor can provide you with more information and treatment options.