title: [An analysis of extravariceal collaterals of gastric varices using magnetic resonance angiography in portal hypertensive patients].
abstract: OBJECTIVE
  This study was aimed to analyze the relationship between gastric varices and its collaterals using magnetic resonance angiography (MRA) and to assess the usefulness of MRA in studies of portosystemic circulation.
  
  
  METHODS
  Eighty-one patients who had portal hypertension with gastric varices took MRA before the therapy for gastric varices.
  
  
  RESULTS
  The types of collaterals observed by MRA were left gastric vein in 67 patients (83%), short gastric vein in 28 (35%), gastrorenal shunt in 25 (31%), and splenorenal shunt in 14 (17%). In most of patients with advanced gastric varices, the size of left gastric vein was larger than others. In most cases of large gastric varices, the short gastric vein ranged between 5 to 10 mm. Gastrorenal shunt was also correlated with the size of gastric varices. The types of more prominent esophageal varices showed a right type (left gastric vein predominance), but the types of more prominent gastric varices or only the gastric varices showed a left type (posterior or short gastric vein predominance) (p<0.05).
  
  
  CONCLUSIONS
  Gadolinium enhanced 3D-MRA can contribute to the study of the hemodynamic relationships between gastric vein and the collateral circulations by presenting more clear images for patients with portal hypertension.
authors.affiliation: Department of Internal Medicine, Institute of Digestive Disease and Nutrition, Korea University College of Medicine, Seoul, Korea.
authors.forename: Chul Hee
authors.initials: CH
authors.lastname: Park
authors.forename: Hoon Jai
authors.initials: HJ
authors.lastname: Chun
authors.forename: Rok Sun
authors.initials: RS
authors.lastname: Jeong
authors.forename: Kyung Ho
authors.initials: KH
authors.lastname: Kim
authors.forename: Yong Sik
authors.initials: YS
authors.lastname: Kim
authors.forename: Young Sun
authors.initials: YS
authors.lastname: Kim
authors.forename: Yoon Tae
authors.initials: YT
authors.lastname: Jeen
authors.forename: Hong Sik
authors.initials: HS
authors.lastname: Lee
authors.forename: Soon Ho
authors.initials: SH
authors.lastname: Um
authors.forename: Sang Woo
authors.initials: SW
authors.lastname: Lee
authors.forename: Jai Hyun
authors.initials: JH
authors.lastname: Choi
authors.forename: Chang Duck
authors.initials: CD
authors.lastname: Kim
authors.forename: Ho Sang
authors.initials: HS
authors.lastname: Ryu
authors.forename: Jin Hai
authors.initials: JH
authors.lastname: Hyun
mesh_terms: D000328:Adult; D000368:Aged; D003097:Collateral Circulation; D004932:Esophageal and Gastric Varices / Q000150:complications / Q000175:diagnosis / Q000473:pathology*; D005260:Female; D006801:Humans; D006975:Hypertension, Portal / Q000150:complications / Q000473:pathology*; D018810:Magnetic Resonance Angiography; D008297:Male; D008875:Middle Aged; D013270:Stomach / Q000098:blood supply*