Patterns of cholesteatoma extension in chronic otitis media

ABSTRACT

To analyze the patterns of extension of cholesteatoma during surgery for chronic otitis media. A retrospective review was made of all cholesteatoma surgery in otology center within 6 years. Data included demographic data and the patterns of extension of cholesteatoma. One hundred sixty six patients, 86 [51.8%] males and 80 [48.2%] females, who were admitted with clinical diagnosis of chronic suppurative otitis media, with cholesteatoma. Analysis of the patterns of extension of cholesteatoma, showed that the tympanic cavity was involved in [91.6%], mastoid cavity in [74%] and Eustachian orifice in [42%] of our patients. In the Tympanic cavity, oval window [46%] and sinus tympani [40%] were involved. The most common patterns of extension included tympanic cavity. Attic and antrum involvement were greater than attic only. This study showed that despite decrease in chronic otitis media cases; still there is extensive extension of cholesteatoma in various part of temporal bone in different patients