title: CT demonstration of dilated gonadal vein as a portosystemic shunt of mesenteric varices.
abstract: OBJECTIVE
  The purpose of this work was to assess CT demonstration of the enlarged gonadal vein as a portosystemic shunt of mesenteric varices.
  
  
  METHODS
  The clinical records and CT images of eight patients with angiographically confirmed mesenteric varices were studied retrospectively. We measured the size of the right gonadal vein of these eight patients and also measured the size of the right gonadal vein in 60 patients without mesenteric varices.
  
  
  RESULTS
  In all eight patients, CT demonstrated that the mesenteric varices drained into the inferior vena cava through the dilated right gonadal vein (diameter 6-10 mm) in all and that the left gonadal vein was not dilated (diameter 2-3 mm). In 60 patients without mesenteric varices, the diameter of the right gonadal vein was 1-5 mm.
  
  
  CONCLUSIONS
  CT demonstrates the dilated gonadal vein as a portosystemic shunt of the mesenteric varices. Awareness of a dilated gonadal vein in patients with portal hypertension may be helpful to consider the possibility of mesenteric varices.
authors.affiliation: Department of Radiology, Showa University School of Medicine, Tokyo, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Gokan
authors.forename: T
authors.initials: T
authors.lastname: Kushihashi
authors.forename: H
authors.initials: H
authors.lastname: Nobusawa
authors.forename: T
authors.initials: T
authors.lastname: Hashimoto
authors.forename: S
authors.initials: S
authors.lastname: Matsui
authors.forename: T
authors.initials: T
authors.lastname: Kitanosono
authors.forename: H
authors.initials: H
authors.lastname: Munechika
mesh_terms: D000328:Adult; D000368:Aged; D004108:Dilatation, Pathologic / Q000000981:diagnostic imaging / Q000473:pathology; D005260:Female; D006066:Gonads / Q000098:blood supply*; D006801:Humans; D008297:Male; D008643:Mesentery / Q000098:blood supply*; D008875:Middle Aged; D012039:Regional Blood Flow; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D014648:Varicose Veins / Q000000981:diagnostic imaging* / Q000473:pathology