Rectal adenocarcinoma, six years after surgery for rectal duplication cyst

Malignant transformation of a rectal duplication is an exceptional situation; the first case was described in literature in 1932. We report a case of degeneration of a rectal duplication that occured in a patient aged 45-Years, operated for rectal duplication. 6 years later he developed a bilateral sacred paralytic sciatica due to invasion by colorectal adenocarcinoma. He had laminectomy and chemoradiation. Degeneration of rectal duplication is a rare situation, our observation emphasizes on a regular follow-up. © 2011 Springer.