Ileosigmoid knot.
D000328:Adult; D012809:Colon, Sigmoid / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007082:Ileum / Q000473:pathology* / Q000601:surgery; D007415:Intestinal Obstruction / Q000473:pathology* / Q000601:surgery; D008297:Male