Process Optimization of Preoperative Biliary Drainage in Patients With Malignant Obstructive Jaundice

Inclusion Criteria

• •Patients who meet the following four criteria are included into the study:
• •1. Preoperative clinical diagnosis of hilar cholangiocarcinoma, distal bile duct cancer, periampullary cancer without distant metastasis or peripheral vascular invasion, and plan for radical surgery;
• •2. Serum total bilirubin is higher than 51 umol/l;
• •3. Age is older than 18 and younger than 80 years old;
• •4. Sign in informed consent to receive preoperative PTBD, ENBD, EBS or without PBD.