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Objectives Biliary obstruction is a common problem encountered in postsurgical anatomy, which may lead to serious complications if not treated promptly. Endoscopic drainage is a minimally invasive and effective treatment option for such patients. However, the optimal route of endoscopic drainage, either SBE-ERCP (single-balloon enteroscopy with endoscopic retrograde cholangiopancreatography) or EUS-BD (endoscopic ultrasound-guided bile duct drainage), remains controversial. In this study, we aim to evaluate the feasibility and outcomes of endoscopic drainage using these two techniques in postsurgical biliary obstruction over a period of 7 years.