Dieulafoy's ulcer is a submucous vascular malformation usually located in the gastric fundus. This lesion can be the cause of recurrent, massive gastrointestinal bleeding that can cause a high fatality rate if the condition remains unrecognized. Because the lesion is very small it can be easily overlooked at endoscopy. The authors describe a case of Dieulafoy's ulcer, presenting as repetitive episodes of upper gastrointestinal hemorrhage, that was treated successfully by suture ligation of the bleeding lesion. Increased awareness of this condition is necessary for an earlier diagnosis and prevention of fatal massive bleeding.
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