恶性梗阻性黄疸系指恶性肿瘤直接侵及或压迫肝外胆道致胆汁排出受阻。根据肿瘤起源及胆汁排出受阻的部位一般可分为低位胆道梗阻及高位胆道梗阻。低位胆道梗阻指壶腹周围恶性肿瘤所致的梗阻 ,包括胰头癌、胆总管末端癌及壶腹癌等 ,部分起源于壶腹附近的十二指肠癌及淋巴瘤等也? Malignant obstructive jaundice refers to the obstruction of biliary excretion caused by malignant tumors directly invading or compressing the extrahepatic biliary tract. According to the origin of the tumor and the blocked bile discharge can be divided into low bile duct obstruction and high biliary obstruction. Low bile duct obstruction refers to obstruction caused by malignant tumors in the periampullary area, including pancreatic cancer, terminal common bile duct cancer, and ampullary cancer. Some of them originate from duodenal cancer such as duodenum and lymphoma.