Abstract
Thirty-one cases of cholesteatoma with intact ossicular chain were reviewed to examine the extension of cholesteatoma, operation procedures, pre- and postoperative hearing levels, and postoperative condition of the ear drum. They were operated on at Departments of Hyogo College of Medicine and Osaka University Medical School from 1989–1996, which were 20.4% of all of the primary cholesteatoma cases ( n=152). Twelve cases located at attic were operated by atticotomy or canal wall up and scutumplasty, 17 cases located at attic/antrum were operated by canal wall down and reconstruction, and two cases located around stapes were operated through the ear canal. Preoperative hearing level was mild (34.2±18.4 dB) and postoperative one was slightly improved (28.7±11.2 dB). In ossicular reconstruction, modified Wullstein type III method showed better hearing gain than Wullstein type I method. Postoperative attic retraction and/or pocket occurred in 15 cases (48.4%), but no recurrent cholesteatoma was found during the present follow-up period. These findings suggested that cholesteatoma with intact ossicular chain showed good postoperative hearing results, but postoperative retraction of the ear drum should be followed up for a long time.
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