肝外胆管癌一般症状较隐蔽 ,且转移较晚 ,一经发现多属晚期 ,且常侵及门静脉 ,肝动脉 ,使手术受到限制 ,有时胆肠吻合内引流也难进行 ,常须用外引流解除胆道梗阻 ,以延长生命。外引流常给患者带来许多不便 ,且会丢失大量体液 ,造成电解质失衡。作者采用体外架桥达到内外引流相 The general symptoms of extrahepatic bile duct cancer are more subtle and metastases are late. Once they are found to be mostly advanced, and often invade the portal vein and hepatic artery, the operation is limited, and sometimes the drainage in the biliary-enteric anastomosis is difficult to perform. Often, external drainage is often required. Biliary obstruction to prolong life. External drainage often brings a lot of inconvenience to the patient, and will lose a lot of body fluids, causing electrolyte imbalance. The authors used external bridging to achieve internal and external drainage