小児中耳真珠腫に対する鼓室形成術

Abstract

Forty-eight ears that underwent tympanoplasty for cholesteatoma in children under 15 years old (25 ears were under 9 years and 23 ears were over 10 years) were compared. with 74 ears in adults. The cholesteatoma extended to the mastoid air cells and the mesoor hypotympanum in children more than in adults. The rate of planned staged tympanoplasty was 64% in children under 9 years, and 56.5% in children over 10 years, but it was only 29.7% in adults. The closed method was used in more than 50% in both children and adults.At the second operation of planned staged tympanoplasty, residual cholesteatoma was noted more frequently in children under 9 years (25%) than in chileren over 10 years (16.7%) and in adults (11.1%). In the one-stage tympanoplasty group followed for more than 1 year, residual cholesteatoma was found more frequently in children under 9 years (12.5%) and over 10 years (11.1%) than in adults (2.7%). In children over 10 years and in adults, all residual cholesteatoma cases were treated by the closed method, but in children under 9 years, residual cholesteatoma appeared more frequently in the open method group than in the closed method group.Retraction cholesteatoma was found m o re frequently in children under 9 years (14.3%) than in children over 10 years (0%) and in adults (3.2%) in the closed me thod group followed for more than 1 year.Postoperative hearing impro v ement was better in children than in adults.