Abstract: Objective Gastroduodenal artery (GDA) aneurysm is a rare entity, We report a case of Spontaneous rupture of GDA aneurysm. Methods By abdomen CTA (Computer Tomography Angiography by Phillips Brilliance iCT) and exploratory laparotomy. Results we make a definite diagnosis. An exploratory laparotomy revealed hemoperitoneum, contain over 2500ml of blood and clot. After blood and clot was removed, revealing ruptured gastroduodenal artery aneurysm with active hemorrhage. The opening was isolated and closed. Conclusion Spontaneous rupture of GDA aneurysm has extremely high mortality,once diagnosed it should be treated immediately and effectively, the surgical treatment has satisfactory result of hemostasis,and remove blood and clot that’s helpful for patient’s postoperative recovery.

Key words: Gastroduodenal artery (GDA) aneurysm, Hemorrhage, Spontaneous

摘要： 目的 报道1例罕见的胃十二指肠动脉瘤自发性破裂出血，提高临床医师对该病的认识。方法 全腹CTA（256层iCT）及剖腹探查。结果 经全腹CTA、术中探查确诊为胃十二指肠动脉瘤破裂出血。结论 胃十二指肠动脉瘤自发性破裂出血死亡率极高，一经确诊应迅速得到确切治疗，手术止血效果好，并可清除腹腔积血以助术后恢复。

关键词: 胃十二指肠动脉瘤, 破裂出血, 自发性