Abstract
Diagnosing petrous bone cholesteatoma requires close attention due to its unique anatomical features. We herein report the case of a 46-year-old man with right-sided deafness who had a history of surgery on his right ear in infancy. The patient developed ipsilateral facial palsy at 33 years of age. At that time, he did not receive a detailed examination and was later diagnosed with petrous bone cholesteatoma. As a result, he developed meningitis. This case involved the supralabyrinthine type of petrous bone cholesteatoma. A transotic approach was selected to remove the petrous bone cholesteatoma because of labyrinthine dysfunction. In this case of otogenic intracranial complications, drainage was performed for the purpose of controlling infection. Thereafter, staged surgery was performed to remove the petrous bone cholesteatoma. Neither cerebrospinal liquorrhea nor meningitis were observed after the surgery. In addition, no recurrence of cholesteatoma was found on 1-year follow-up MRI.
