Title Search [KOREA-JAPAN 1] ADV score is a quantifiable prognostic prediction model for surgical resection of hepatocellular carcinoma: A Korea-Japan collaborative validation study with 10,606 patients Shin HWANG (University of Ulsan, Korea) [KOREA-JAPAN 2] Clinical outcomes and prognostic analysis of conversion surgery for initially unresectable biliary tract cancer : Japan – Korea collaboration study Yasuhiro YABUSHITA (Yokohama City University, Japan) [KOREA-JAPAN 3] Role of adjuvant treatment in ampulla of vater cancer Joon Seong PARK (Yonsei University, Korea) [KOREA-JAPAN 4] Surgical outcomes of portal vein reconstruction with jejunal vein resection in patients with pancreatic head cancer Yuichi NAGAKAWA (Tokyo Medical University, Japan) [KOREA-JAPAN 5] The clinicopathologic features and the validity of the new T1 pancreatic cancer defined by the 8th edition AJCC cancer staging system Wooil KWON (Seoul National University, Korea) [KOREA-JAPAN 6] Validation of difficulty scoring system for laparoscopic distal pancreatectomy Kohei NAKATA (Kyushu University, Japan) [KOREA-JAPAN 7] Splenic preservation versus splenectomy during laparoscopic distal pancreatectomy for benign and low-grade malignant pancreatic tumor: a propensity score matching analysis Yoo-Seok YOON (Seoul National University, Korea)