Ileosigmoid knot and sigmoid volvulus.
D000328:Adult; D012809:Colon, Sigmoid; D005260:Female; D005734:Gangrene / Q000601:surgery; D006801:Humans; D007082:Ileum; D007415:Intestinal Obstruction / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011859:Radiography