It is difficult to anatomically understand the three-dimensional structure of the middle ear and temporal bone during surgery, and great surgical technique are required. Therefore, complications are avoided through simulation using a three-dimensional printer, which was effective in not only safe and reliable surgery but also educating young physicians.

Anatomical anomalies of the jugular bulb include a high jugular bulb and deficiency of the cortical bone. Most cases are asymptomatic; however, they may present with tinnitus, hearing loss, dizziness. We encountered a rare case of jugular bulb diverticulum with deficiency of the cortical bone that caused objective tinnitus.