A total of 98 ears(88 patients) of chronic otitis media(COM) under 15 years old were retrospectively analyzed. Among the 98 chronic suppurative otitis media, 55 ears(56%) were non-cholesteatomatous COM and 43 ears(44%) were cholesteatomatcus
COM(Cholesteatoma). The main presenting symptoms were the otrrhea(75%), hearing loss(18%), and otalgia. Sixty eight ears(69%) had small to total cental perforation and 18 ears of central perforation were the cholesteatoma. Fifteen ears(15%) had
the
attic or posterior marginal perforation and 14 ears of attic or marginal perforation were the cholesteatoma. The attic was the most common site of the cholesteatoma, and 40 ears(93%) out of 43 cholesteatoma involved attic. The aditus(65%) and the
mesotympanum(53%) were the next common place for the cholesteatoma.
Intact canal wall mastoidectomy(ICW) was the most common operative procedure and 69% of COM patients were operated with OC. The ossicular chains were intact in 73% in COM, however, only 14% were intact in the cholesteatoma. Eighty four patients
were
completed postoperative dressing in 3 months and visited 11 times in average. The ICW and COM patients were visited OPD less frequently compare to the OC and cholesteatoma. Postoperative hearing was evaluated in 601 ears. Twenty four ears(40%)
were
improved hearing postoperatively more than 10 dB HL of air bone gap and 13 ears(22%) were aggravated 10 dB or more. In the OC procedure, 53% patients were improved hearing postoperatively, however, 34% of ICW patients were improved postoperative
hearing. Preoperative Eustachian function test by Valsalva method was not significantly related with the postoperative improvement of hearing.
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