Carcinoma of the rectum: results of abdominoperineal resection.
D000367:Age Factors; D006801:Humans; D007813:Laparotomy; D010502:Perineum / Q000601:surgery; D011379:Prognosis; D012004:Rectal Neoplasms / Q000601:surgery*; D012812:Sigmoidoscopy; D013514:Surgical Procedures, Operative / Q000379:methods / Q000401:mortality