Title Search [BP BO-S1] The Efficacy of Neoadjuvant Radiotherapy after Chemotherapy And the Optimal Interval from Radiotherapy to Surgery for Resectable And Borderline Resectable Pancreatic Cancer Won-Gun YUN (Seoul National University Hospital, Korea) [BP BO-S2] Stage-matched Prognosis Comparison between YpTNM And PTNM Stage in Pancreatic Cancer Hyeong Seok KIM (Samsung Medical Center, Korea) [BP BO-S3] Impact of Internal Stent for Pancreatic Anastomosis on Long-term Pancreatic Function after Pancreatoduodenectomy Jinju KIM (Seoul National University Bundang Hospital, Korea) [BP BO-S4] Preoperative Fistula Risk Score (p-FRS) before Pancreatoduodenectomy Using Computed Tomography Body Composition Sung Hyun KIM (Severance Hospital, Korea) [BP BO-S5] Conditional Relative Survival Rate of Gallbladder Cancer in Korea: a Population-based Study Mee Joo KANG (National Cancer Center, Korea) [BP BO-S6] Conversion And Salvage Surgery for Advanced / Recurrent Biliary Tract Cancer Tomoaki YOH (Kyoto University, Japan) [BP BO-S7] Impact of Adjuvant Therapy on Resected Invasive Intraductal Papillary Mucinous Neoplasm of the Pancreas : an Korean Multicenter Cohort Study Munseok CHOI (Yongin Severance Hospital, Korea) [BP BO-S8] Complement-Secreting Cancer-Associated Fibroblast Remodels the Immunosuppressive Microenvironment to Promote Pancreatic Ductal Adenocarcinoma Progression Xiaodong TIAN (Peking University First Hospital, China)