Detection of Facial Canal Dehiscence on HRCT in Chronic Otitis Media: An Observational Study

The facial nerve is vulnerable during ear surgery when there is a dehiscence of the facialnerve canal. Otologic surgeons need a lot of information about facial nerve canal dehiscenceto avoid injury of the nerve. Dehiscence of facial canal more frequently associated with attico-antral type of chronic otitis media and more often with cholesteatoma. With the advent of high-resolution CT, it has become easy to assess facial canal status preoperatively.