[Successful treatment of a saphenous vein graft aneurysm detected 15 years after coronary bypass grafting (CABG)].

A 72-year-old female with a history of hypertension, dyslipidemia, and coronary artery bypass grafting (CABG) 16 years before was admitted because of chest discomfort. Enhanced computed tomography (CT) revealed a mass lesion, with a diameter of 40 mm and an enhanced area in its inner part. Coronary arteriography showed saphenous vein graft dilatation, and the diagnosis of saphenous vein graft aneurysm was made. Because of the risks of aneurysmal rupture, embolization, and myocardial infarction, surgery was performed. Revascularization of the coronary artery distal to the aneurysm and aneurysmectomy were performed with the beating heart under cardiopulmonary bypass to prevent myocardial infarction. The patient's postoperative course was uneventful.