AIPDV, anterior inferior pancreatico duodenal vein; ASPDV, anterior superior pancreatico duodenal vein; AV, azygos vein; BCS, Budd­Chiari syndrome; CBD, common bile duct; CT, computed tomography; DV, duodenal varices; ECD, epicholedochal; EHPVO, extrahepatic portal vein obstruction; ERVP, extrinsic rectal venous plexus; FJT, first jejunal trunk; GEV, gastroepiploeic vein; GT, gastrocolic trunk; GV, gastric varices; IMV, inferior mesenteric vein; IPDV, inferior pancreatico duodenal vein; IRV, inferior rectal veins; IRVP, intrinsic rectal venous plexus; IVC, inferior vena cava; LGEV, left gastroepiploic vein; LGV, left gastric vein; LPV, left portal vein; MCV, middle colic vein; PACD, paracholedochal; PHB, portal hypertensive biliopathy; PIPDV, posterior inferior pancreatico duodenal vein; PPCV, portoportal collateral vein; PSCV, portosystemic collateral veins; PSPDV, posterior superior pancreatico duodenal vein; PUV, paraumbilical vein; PV, portal vein; PVT, portal vein thrombosis; RGEV, right gastroepiploic; RGV, right gastric vein; SMV, superior mesenteric vein; SRV, superior rectal vein; SV, splenic vein; SVC, superior vena cava; US, ultrasonography; collateral pathways; portal hypertension; varices