Computed Tomography Angiographic Diagnosis of Dieulafoy’s Lesion – A Rare Nonvariceal Cause of Gastrointestinal Bleeding

Dieulafoy's lesion is a rare but potentially life-threatening cause of gastrointestinal (GI) bleeding, with its rarity possibly attributing to unawareness and underdiagnosis. Due to its subtle presentation and the potential for massive bleeding, Dieulafoy's lesion often poses a diagnostic challenge. This report presents the case of a 68-year-old patient with upper GI bleeding, where computed tomography (CT) angiography confirmed a Dieulafoy's lesion which was successfully treated with endoscopic hemoclip application. The aim of this article is to increase awareness about Dieulafoy's lesion and to stress the importance of CT angiography in cases where Dieulafoy's lesion might be missed during endoscopy.