Dieulafoy's lesion of the jejunum.

Dieulafoy's lesion is a rare vascular anomaly but a potentially life-threatening disease. This lesion can also be found in the small intestine, which can be diagnosed only by angiography. However, the angiography may be normal when the bleeding is inactive. We report a case of jejunal Dieulafoy's lesion with a repeated attack of massive gastrointestinal bleeding with a normal initial angiography. The pathological examination found an unusual picture as a dilated submucosal vessel protruded like a submucosal tumor.