A composite tumor in tubulovillous adenoma of the rectum

Abstract
A 75 yr old man is presented with a rare mixed adenocarcinoma and carcinoid tumor contained in a tubulovillous adenoma. Diagnosis is confirmed from a polyp obtained at endoscopic biopsy and histopathological examination. Surgery is not recommended in this case because the patient''s age prohibits extensive abdominopenineal resection with subsequent colostomy.