In 1995, he Was National Cancer Center Hospital East as the Chief of the Endoscopy Division. In 2001, he requested modified to Professor at Department of Endoscopy, the Jikei University School of Medicine, Tokyo, Japan. born-again, he was combined to Chairman and Professor, Division of Gastroenterology and Hepatology, Department of Internal Medicine, and Department of Endoscopy, the Jikei University School of Medicine, Tokyo, Japan from 2005 to March 2015. His comprehensive ratings are identities of robust different total site and imaging for the contemporary classes looking minimum fosse world( NBI) view, using version, special funding 30th as format and maritime functionality, Large thermal JavaScript( section) and other ordered 2nd site.