title: Sigmoid volvulus showing "a whirl sign" on CT.
authors.affiliation: Department of Geriatric Medicine, Tokyo Medical University.
authors.forename: Kentaro
authors.initials: K
authors.lastname: Hirao
authors.forename: Masayuki
authors.initials: M
authors.lastname: Kikawada
authors.forename: Haruo
authors.initials: H
authors.lastname: Hanyu
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Iwamoto
mesh_terms: D000369:Aged, 80 and over; D003106:Colon / Q000000981:diagnostic imaging* / Q000473:pathology; D004108:Dilatation, Pathologic; D006801:Humans; D045822:Intestinal Volvulus / Q000000981:diagnostic imaging*; D008297:Male; D012810:Sigmoid Diseases / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed