Full Name: Masahiko Kinoshita. Positions and Institutions: 2025　Lecturer, Osaka Metropolitan University Graduate School of Medicine 2022　Assistant Professor, Osaka Metropolitan University Graduate School of Medicine Academic Degree: 2016　Doctor of Philosophy, Osaka Metropolitan University Graduate School of Medicine Research Works: Masahiko Kinoshita is a hepatobiliary and pancreatic surgeon with expertise in liver surgery, fluorescence-guided navigation, and minimally invasive techniques including robotic and laparoscopic liver resection. His research focuses on cholangiocarcinoma, especially on pathological and molecular subclassifications, tumor immune microenvironment, and biomarker-based therapeutic strategies. He has authored numerous clinical and translational studies exploring the prognostic impact of tumor-infiltrating immune cells and molecular signatures in intrahepatic cholangiocarcinoma. Specialty Board Certifications: 2024　Fellow of American College of Surgerons 2022　Board Certified Hepato-Biliary-Pancreatic Surgeon, Japanese Society of Hepato-Biliary-Pancreatic Surgery. 2019　Endoscopic Surgical Skill Qualified Surgeon, Japan Society for Endoscopic Surgeon. 2019　Board Certified Hepatologist, Japan Society of Hepatology. 2018 Board Certified Surgeon in Gastroenterology, The Japanese Society of Gastroenterological Surgery. 2015　Board certified surgeon, Japan Surgical Society.