title: Sigmoid volvulus.
mesh_terms: D000328:Adult; D012809:Colon, Sigmoid / Q000473:pathology / Q000601:surgery; D005260:Female; D005734:Gangrene; D006801:Humans; D007415:Intestinal Obstruction / Q000209:etiology / Q000473:pathology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D012810:Sigmoid Diseases / Q000601:surgery*