胃动脉瘤又称Dieulafoy病变,是引起消化道尤其是上消化道大出血的原因之一。目前尚无确切的定义,病变是突露于胃肠道腔内活动出血或黏附血块的动脉,动脉周围无溃疡形成这一特征已成为多数学者共识。胃动脉瘤可以发生在胃肠道的任何部位,以近端胃最多见。1898年,Dieulafoy最早报道了3例因胃动脉破裂致上消化道大出血而死亡的患者,认为病灶是胃黏膜浅表性溃疡引起胃动脉破裂,出血中断了病变的进一 Gastric aneurysm, also known as Dieulafoy lesions, is one of the causes of gastrointestinal bleeding, especially upper gastrointestinal bleeding. At present there is no definitive definition of the lesion as being a prominent artery in the gastrointestinal tract that is actively bleeding or sticking to a blood clot. It has become the consensus of most scholars that there is no ulceration around the artery. Gastric aneurysms can occur in any part of the gastrointestinal tract to the proximal stomach, the most common. In 1898, Dieulafoy first reported in 3 patients died of upper gastrointestinal bleeding due to ruptured gastric artery, that lesions are gastric mucosal superficial ulcers cause gastric artery rupture, bleeding interrupted the progression of the disease