The results of treatment of anorectal anomalies: a thirteen to twenty year follow-up.

The long-term results of low anomalies are excellent, as expected, whether primarily treated by cutback or transplantation. Those of the high anomalies are perhaps better than expected but only achieved after an unacceptably long period of incontinence. Better techniques are still needed for these supralevator deformities. Permanent colostomy also had its problems.