title: The coffee bean sign.
authors.affiliation: Department of Radiology, North Shore University Hospital, Manhasset, NY, USA. debfeldman@hotmail.com
authors.forename: D
authors.initials: D
authors.lastname: Feldman
mesh_terms: D012809:Colon, Sigmoid / Q000000981:diagnostic imaging; D006801:Humans; D007415:Intestinal Obstruction / Q000000981:diagnostic imaging*; D011860:Radiography, Abdominal; D012810:Sigmoid Diseases / Q000000981:diagnostic imaging*