title: [Volvulus of the sigmoid loop. Report of 20 cases].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D012809:Colon, Sigmoid / Q000000981:diagnostic imaging / Q000601:surgery; D005260:Female; D006801:Humans; D007415:Intestinal Obstruction / Q000000981:diagnostic imaging / Q000601:surgery; D008297:Male; D008875:Middle Aged; D011859:Radiography
vernacular_title: Volvulo del asa sigmoidea. Presentación de veinte casos.