Title Search [BP Best OP 1] Risk factors of post-hepatectomy liver failure for perihilar cholangiocarcinoma: Proposal of risk score and significance of future liver-remnant volume-to-body weight ratio Jong Woo LEE (Asan medical center, Korea) [BP Best OP 2] GLRLM features in CT texture analysis are prognostic factors: Evaluation of pancreatic cancer heterogeneity, retrospective cohort study Hyung Sun KIM (Pancreatobiliary Cancer Clinic, Gangnam Severance Hospital, Yonsei University, Korea) [BP Best OP 3] Bioengineered bile duct with cholangiocytes derived from human stem cells Elina Maria BUISSON (Hanyang University, Korea) [BP Best OP 4] Effects of High-Dose Pancreatic Enzyme Replacement Therapy on Body Weight, Nutritional Status, and Quality of Life after Pancreaticoduodenectomy Hongbeom KIM (Seoul National University College of Medicine, Korea) [BP Best OP 5] A inverted mattress technique of pancreaticojejunostomy for laparoscopic pancreatoduodenectomy Hyung Jun KWON (Kyungpook National University Chilgok Hospital, Kyungpook National University School of Medicine, Korea)