Abstract:Abstract: Objective?To evaluate the feasibility and safety of endoscopic ultrasonography-guided biliary drainage (EUS-BD) for malignant biliary obstruction in patients with surgically altered anatomy.?Methods?From January 2017 to March 2019, 14 malignant biliary obstruction patients with surgically altered anatomy underwent EUS-BD, and the treatment effect and short-term complications after surgery were evaluated.?Results?Of the 14 patients, 13 were successfully underwent EUS-BD, and the technical success rate was 92.86%. Of the 13 successful patients, 9 patients underwent EUS-guided antegrade biliary stenting, 1 underwent hepaticogastrostomy, 1 underwent hepaticoesophagostomy and 2 underwent hepaticojejunostomy. Postoperative complications included 1 patient with gastrointestinal perforation, 1 patient with biliary peritonitis, 1 patient with Mallory-Weiss syndrome with bleeding. All of them were improved after conservative treatment. No stent displacement occurred postoperatively. Compared with postoperative level of bilirubin, the level of bilirubin of patients decreased significantly after surgery and patients were discharged uneventfully.?Conclusion?It is safe and feasible to perform EUS-BD in experienced endoscopic centers for malignant biliary obstruction patients with surgically altered anatomy.