Dieulafoy lezyonu, nadir görülen, hayati tehdit eden ve siklikla tekrarlayan kanamalara neden olan mide mukozasinin yüzeyel vasküler lezyonudur. Genis çapli pulsatil bir arterin, submukozal bir defektten protrude olmasi sonrasinda olusan ciddi kanamalarla karakterizedir. Tani ve tedavisinde endoskopi güvenilir ve etkili bir yöntemdir. Bu yazida; ikisi akut, biri kronik gastrointestinal kanama ile basvuran, Dieulafoy lezyonu tanisi konulan ve endoskopik olarak (skleroterapi ve heater prob ile termokoagülasyon) tedavi edilen üç olgu sunularak, literatür gözden geçirilmistir.
Dieulafoy?s lesion, vascular abnormality of the gastric mucosa, is a rare but potentially life-threatening cause of recurrent and massive gastrointestinal bleeding. Dieulafoy?s lesion is characterized by protrusion of a large pulsatile arterial vessel through a submucosal erosion, causing serious gastrointestinal bleeding. Endoscopy is a safe and effective method in the diagnosis and treatment. We review the literature and present three cases of Dieulafoy?s lesion treated with endoscopic methods (sclerotherapy and heater probe thermocoagulation); two were admitted with acute and one with chronic gastrointestinal bleeding