Eighteen paticnts (17 females and 1 male ) with acguired preanal fistula were treated surgically. The ages ranged from 4 months to 12 years. Their locations were between the anorectum and the vestibulum (12 cases), the anorectum and the labia (2 cases), the anorectum and the vagina (3 cases), and the anorectum and the urethra (1 case). All of them were tueated by intraectal repair. The surgical procedures were briefly discused. The operation could be used in all types of acquired preanal fistula and has no danger of trauma to the anal sphincter and posterior vaginal wall. A long term follow-up study of 7 patients showed that there was a cure in 18 cases with normal function.
