Rectal adenocarcinoma in an adult with imperforate anus at birth.

A 43-year-old man with imperforate anus surgically corrected at birth presented with bleeding per rectum and constipation. On investigations, there was an adenocarcinoma at 2 cm from anal verge involving mid and lower rectum. He underwent abdominoperineal resection. During surgery, he was found to have a rectourethral fistula. The relationship between imperforate anus, rectourethral fistula and carcinoma of rectum is disclosed.