Title Search [OP 6-1] Comparison of clinical outcomes between minimally invasive (laparoscopic and robotic) and open extended cholecystectomy Hee Ju SOHN (Seoul National University, Korea) [OP 6-2] Postoperative serum hyperamylasemia (POH) predicts additional morbidity after pancreatoduodenectomy. It is not all about pancreatic fistula Alice CATTELANI (Verona University Hospital, Italy) [OP 6-3] The development and clinical efficacy of simulation training of open duct-to-mucosa pancreaticojejunostomy using pancreas and intestine silicone models Jae Seung KANG (Korea University, Korea) [OP 6-4] Could computed tomography predict vascular R0 resection in patients with borderline and locally advanced pancreatic adenocarcinoma after neoadjuvant chemotherapy? Yoo Na LEE (University of Ulsan, Korea) [OP 6-5] Dose severity of acute cholecystitis related to post operative visceral pain? YOUNG IL CHOI (Kosin University, Korea) [OP 6-6] A phase 2 trial of neoadjuvant modified FOLFIRINOX chemotherapy for resectable pancreatic adenocarcinoma Seung Soo HONG (Yonsei University, Korea) [OP 6-7] Venous invasion as an upstaging factor in pancreatic head cancer compared to pancreatic tail cancer? Min Kyu SUNG (University of Ulsan, Korea)