title: Portal systemic shunt through the renal vein.
abstract: BACKGROUND
  Despite the semi-routine use of color Doppler sonography for evaluating portal circulation abnormalities, there is a relative paucity of detailed color Doppler findings of portal systemic (P-S) shunt through the renal vein (P-SR shunt).
  
  
  METHODS
  We reviewed the color Doppler findings of 18 patients with P-SR shunt to determine its clinical significance and appropriate scanning techniques for diagnosing accurately P-SR shunt.
  
  
  RESULTS
  The splenorenal shunt was imaged as a highly tortuous vessel at the splenic hilum, which then coursed backward behind the spleen. Splenic vein flow was reversed or very slow. The gastrorenal shunt originated from the splenic vein, coursed backward, and joined the left renal vein. Flow direction in the splenic vein was always hepatopetal. The P-S shunt through the right renal vein originated from duodenal or jejunal varices, coursed posterolaterally, and joined the right renal vein at the renal hilum.
  
  
  CONCLUSIONS
  Familiarity with these color Doppler findings will help increase the diagnostic confidence of P-SR shunt by color Doppler sonography.
authors.affiliation: Center of Diagnostic Ultrasound, Akita Red Cross Hospital, 222-1, Saruta Kamikitade Akita, Japan. mamikoy@coral.ocn.ne.jp
authors.forename: M
authors.initials: M
authors.lastname: Yamada
authors.forename: H
authors.initials: H
authors.lastname: Ishida
authors.forename: T
authors.initials: T
authors.lastname: Komatsuda
authors.forename: K
authors.initials: K
authors.lastname: Furukawa
authors.forename: H
authors.initials: H
authors.lastname: Yagisawa
authors.forename: H
authors.initials: H
authors.lastname: Ohno
authors.forename: Y
authors.initials: Y
authors.lastname: Katsuura
authors.forename: K
authors.initials: K
authors.lastname: Suganuma
mesh_terms: D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D005260:Female; D006501:Hepatic Encephalopathy / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011169:Portal Vein / Q000000981:diagnostic imaging* / Q000503:physiopathology; D012082:Renal Veins / Q000000981:diagnostic imaging* / Q000503:physiopathology; D013162:Splenic Vein / Q000000981:diagnostic imaging* / Q000503:physiopathology; D018615:Ultrasonography, Doppler, Color