Figure 8.

Venous drainage of extrahepatic bile ducts (Anterior view): The epicholedochal venous plexus (of Saint) drain into two marginal veins – 3 o'clock and 9 o'clock marginal veins (paracholedochal venous plexus of Petren) which drain into right gastric vein (RGV), posterior superior pancreaticoduodenal vein (PSPDV) and superior mesenteric vein (SMV) and connect to hilar plexus. The cystic vein always drains into 9 o'clock marginal vein. The hilar plexus and the venous plexus on the right and left hepatic ducts drain into portal venous branches to caudate lobe, quadrate lobe and segments adjacent to porta hepatis (segments III, IV, V).