[Double balloon endoscopy].

Double-balloon endoscopy (DBE) was developed as a new technique for visualization and intervention of the entire small intestine. It has been world-widely reported that DBE is very useful for not only diagnosis but also endoscopic therapy. In this paper, the principle of the DBE system and indication for DBE are described introductory. DBE should be performed considering differential diagnosis based on clinical information such as episode of bleeding, detailed case history and CT findings for making diagnosis efficiently.