The success rate of ERC was 88. 8% (95/107) , that of nasobiliary catheter placement 94% (64/68) , biliary stent placement 88. 5% (23/26).

• ERC手术成功率为88.；8%25(95/107)；鼻胆管引流术成功率为94%25(6;4/68)；胆管内支架术的成功率为88