Ileosigmoid knot.
D000328:Adult; D000368:Aged; D012809:Colon, Sigmoid; D005260:Female; D006801:Humans; D007082:Ileum; D007415:Intestinal Obstruction / Q000175:diagnosis / Q000401:mortality / Q000601:surgery*; D008297:Male; D008875:Middle Aged