A hamartoma of the colon with unusual features.

An unusual case of colonic hamartoma in a 67-year-old man is reported. Colonoscopy polyp surveillance revealed a polypoid lesion of the sigmoid colon which had the characteristics of a hamartoma on microscopic examination. The lesion, which was classified as a colonic hamartoma, is described. Review of the literature revealed no previous report of such a colonic poylp.