Acoustic neuroma is growth of a benign tumor that forms on the vestibulocochlear nerve. This nerve leads from the inner ear to the brain. Acoustic neuromas usually grow slowly and do not spread. However, they can eventually grow so large that they press against surrounding structures, including the brain and other nerves. An experienced neurosurgeon at The NeuroMedical Center is best suited to treat acoustic neuroma using advanced techniques including the gamma knife.