Dr. Naohisa Yoshida is Assistant Professor at the Kyoto Prefectural University of Medicine and a member of the Department of Molecular Gastroenterology and Hepatology. He received his medical degree from the Kyoto Prefectural University of Medicine, Kyoto, Japan and completed his Residency and Gastroenterology Fellowship at the same university. Dr. Naohisa Yoshida is one of the leading research experts in the role of image enhanced endoscopy including NBI and FICE in colorectal tumors. And he is also an expert of endoscopic therapy including EMR and ESD to colorectal tumors and chemotherapy to advanced colorectal cancer. Additionally, he has an oncologist qualification in Japanese Society of Medical Oncology. He is an Editor of World J Gastroenterology, an Editorial Board Member of World Journal of Gastrointestinal Endoscopy, an Editor of Insight Knowledge, and an Editorial review member of Japanese Gastroenterological Endoscopy Society.