Abstract Background: Dieulafoy lesions are an uncommon but potentially life-threatening cause of non-variceal upper gastrointestinal bleeding, caused by rupture of a large-caliber submucosal artery through a minute mucosal defect; diagnosis is difficult because bleeding is intermittent and the surrounding mucosa appears nearly normal. Hemorrhage from a gastric Dieulafoy lesion during recovery from hypertriglyceridemic acute pancreatitis (HTG-AP) has rarely been reported.
