The purpose of this study is to evaluate the safety and effectiveness of different methods of preoperative biliary drainage in patients with extrahepatic bile duct neoplasms with obstructive jaundice (hilar cholangiocarcinoma, distal bile duct cancer, and periampullary carcinoma), including PTBD (Percutaneous Transhepatic Biliary Drainage), ENBD (Endoscopic Nasobiliary Drainage) and EBS (Endoscopic Biliary Stenting).
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Complication rate after drainage
Timeframe: From PBD to completion of radical surgery, an average of 1 month
Complication rate after radical surgery
Timeframe: 1 month post operatively
Success rate of PBD
Timeframe: Day 1