[Recurrent fistulas in the treatment of anorectal malformations]

42 observations of imperforate anus with recurrent recto-urethral or rectovaginal fistula are summarized. The results are divided in early good results: 32 cases and poor results 10, all re-operated one or more times; at long term, were obtained 39 good, 2 poor results and one with short follow-up. Two factors may determine the recurrence of fistula: earlier post-surgical infection, and technique of rectal dissection.