Acoustic neuroma is a benign tumor. It is also known as vestibular schwannoma. The symptoms of acoustic neuroma include dizziness, hearing impairment, tinnitus, and unsteadiness. Reference: https://www.mayoclinic.org/diseases-conditions/acoustic-neuroma/symptoms-causes/syc-20356127 Image via: https://www.mayoclinic.org/diseases-conditions/acoustic-neuroma/symptoms-causes/syc-20356127