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Classification of congenital extrahepatic portosystemic shunt. (A), Type 1 is described as complete portosystemic shunts (end-to-side) and the liver is not perfused with portal blood; (B), Type 2 is defined as a certain proportion of portal blood perfused to the liver and the remaining portal flow bypassed the liver and diverted into a systemic vein through a partial shunt (side-to-side). IVC, inferior vena cava; PV, portal vein.
