ABSTRACT
Perihilar biliary tract tumours include hilar cholangiocarcinoma, gallbladder cancer invading the hepatic hilum and intrahepatic cholangiocarcioma invading the hepatic hilum.The tumours have the special characteristics such as strong invasion capability, the anatomic variant, the pathophysiological complexity, the biological behavior diversity and the difficulty of preoperative evaluation which result in low R0 resection rate, more postoperative complications, more mortality and poor prognosis.The perihilar surgical techniques system aims to set a reasonable and individual operation procedure on the principle of precision surgery by taking the key technique of hilar dissection and exposing, evaluting the hilar anatomy by the means of three-dimensional digital medical image evaluation system, evaluting the relationship between the tumour and hepatic artery and portal vein under the condition of hepatic hilum complete exposure by combining anterograde and retrograde route from intra and extra-hepatic direction to hepatic hilum.The perihilar surgical techniques system is applied to improve the accuracy of resectable evaluation, the R0 radical resection rate, the safety of operation and the accuracy of cholangiojejunostomy through the accurate preoperative evaluation, the detailed operation plan, the accurate intraoperative reassessment, the perfect operative procedure and the excellent postoperative management, eventually for the purpose of reducing the postoperative complications rate and perioperative mortality and improving the prognosis of perihilar biliary tract tumours.