Keiichi Kubota graduated from the School of Medicine, Faculty of Medicine, University of Tokyo in 1981. He entered the Second Department of Surgery at the University of Tokyo in 1985, after training in the surgical departments of The University of Tokyo Hospital, the Tokyo Metropolitan Police Hospital and other institutions. In 1988, he moved to the Department of Transplantation Surgery, Karolinska Institute (Sweden). Since 1996, he has been a Lecturer at the Department of Hepatobiliary and Pancreatic Surgery, University of Tokyo. Since 2000, he served as Professor and Chairman of the Second Department of Surgery at the Dokkyo Medical University, Tochigi, Japan. He is the Medical Instructor for the Japan Surgical Society, the Japanese Society of Gastroenterological Surgery, and the Japanese Society of Gastroenterology. His research topics mainly include hepatectomy, hepatocellular carcinoma, bile duct, biliary tract, and transplantation.