title: Duodenal hematoma: CT demonstration of the ring sign.
abstract: This case illustrates the computed tomographic (CT) and sonographic features of duodenal hematoma. In addition, the CT scans demonstrate the ring sign, a characteristic feature noted previously only by magnetic resonance imaging.
authors.forename: M T
authors.initials: MT
authors.lastname: Yoshino
mesh_terms: D004378:Duodenal Diseases / Q000000981:diagnostic imaging*; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging*; D006406:Hematoma / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography