Malignancy of the anus, rectum, and sigmoid; also, the relationship of adenomatous tissue and polyps to malignancy.
D001003:Anal Canal; D001005:Anus Neoplasms; D012809:Colon, Sigmoid; D003110:Colonic Neoplasms; D011127:Polyps; D012004:Rectal Neoplasms; D012007:Rectum
ANUS/neoplasms; COLON/neoplasms; POLYPI; RECTUM/neoplasms