Dr. Masataka Kikuyama is a Director of Gastroenterology in Tokyo Metropolitan Cancer and Infectious Disease Komagome Hospital. He received his M.D. degree in 1985 and Ph.D. degree in 1996 from Hamamatsu University School of Medicine. Dr. Kikuyama focuses on early diagnosis of pancreatic cancer and endoscopic procedures in pancreatobiliary diseases, especially in post-surgery state. Dr. Kikuyama and his co-workers have studied the strategy for diagnosing pancreatic cancer at the early stage and reported the usefulness of endoscopic ultrasonography and repeated pancreatic juice cystology using nasopancreatic tube for that, moreover have studied endoscopic methods to treat pancreatic-biliary disorders in post surgery state and reported ERCP-related and EUS-guided treatments for those disorders.