Fig. 2. Hepatofugal portosystemic pathways in portal hypertension. Progressive resistance to portal venous blood flow results in decompression through pre-existing collateral pathways. Paraumbilical (PuVa) and abdominal wall (AwVa) varices develop after recanalization of the paraumbilical vein. Esophageal (EsoVa), Paraesophageal (PEsoVa), and Cardiophrenic (CPVa) develop when blood flow decompresses via the left gastric vein (LGV). Mesenteric (MVa) and rectal (RVa) varices may also develop to allow passage of portal venous blood into systemic circulation. MPV, main portal vein; GrSh, gastrorenal shunt; SrSh, splenorenal shunt; SV, splenic vein; SMV, superior mesenteric vein; IMV, inferior mesenteric vein.

Gastrointestinal Intervention 2018;7:21~28 https://doi.org/10.18528/gii180005

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