[Anus reconstruction in situ by using bulbocavernosus and pedicled small intestine segment].

From Dec, 1990 to Aug, 1992, 40 patients with anal-rectal malignancies were treated by abdominoperineal resection plus anus reconstruction in situ. External sphincter was reconstructed by using bulbocavernosus, internal sphincter by pedicled small intestine segment, rectal internal angle. rectal valves were reconstructed, Postoperative functions were satisfactory in most cases by clinical observations and a series of function tests.