Dieulafoy's vascular malformation may cause serious upper gastrointestinal
hemorrhage, The mucosal lesion is usually small, and precise location of th
e lesion may therefore be difficult. We report a case of Dieulafoy's lesion
successfully treated by endoscopic band ligation (EBL) where endoscopic ul
trasonography (EUS), including Doppler examination, was applied for accurat
e diagnosis, guiding EBL and control of treatment.