title: Counterclockwise barber-pole sign on CT: SMA/SMV variance without midgut malrotation.
abstract: We report on a 10-year-old girl who presented with worsening pain and anorexia after blunt trauma to the abdomen. Contrast-enhanced CT of the abdomen was performed, and a counterclockwise rotation of the superior mesenteric vein around the superior mesenteric artery was seen. An upper gastrointestinal (UGI) series with small-bowel follow-through demonstrated a normally located duodenal-jejunal junction. This is the first case report of a counterclockwise barber-pole sign seen by CT with UGI that was negative for malrotation or volvulus.
authors.affiliation: Department of Radiology, Tripler Army Medical Center, Honolulu, Hawaii, USA.
authors.forename: Paul
authors.initials: P
authors.lastname: Clark
authors.forename: Lynne
authors.initials: L
authors.lastname: Ruess
mesh_terms: D015746:Abdominal Pain / Q000175:diagnosis* / Q000209:etiology; D000855:Anorexia / Q000175:diagnosis* / Q000209:etiology; D002648:Child; D005260:Female; D006801:Humans; D045822:Intestinal Volvulus / Q000150:complications* / Q000000981:diagnostic imaging*; D008638:Mesenteric Arteries / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D011859:Radiography