Gastroduodenal artery aneurysms are rare. Common causes include blunt trauma, pancreatitis, infection, autoimmune disorders, vascular intervention and surgery. We report 2 patients with gastroduodenal artery aneurysms, the first being an idiopathic true aneurysm and the next, a pseudoaneurysm resulting from pancreatitis. Diagnoses were made by computed tomography scans with successful embolization of both patients. Treatment of gastroduodenal artery aneurysms includes surgery, endovascular techniques or observation. Embolization is a feasible option for gastroduodenal artery aneurysms and pseudoaneurysms.