Multicenter retrospective study of preoperative endoscopic biliary drainage status for malignant hilar biliary obstruction - Multicenter retrospective study of preoperative endoscopic biliary drainage status for malignant hilar biliary obstruction

The patients were 163 men and 56 women, with a mean age of 69.7 years. Endoscopic nasobiliary drainage, conventional endoscopic biliary stenting, and endoscopic biliary inside stenting were performed using the preoperative endoscopic biliary drainage (PEBD) method in 160, 31, and 28 patients, respectively. The cumulative dysfunction rates of PEBD were not significantly different among the PEBD methods (p=0.60). The adverse event rates were were not significantly different among the PEBD groups (p = 0.70).