[Gradual Enlargement of Saphenous Vein Graft Aneurysm Causing Chest Symptom after Coronary Artery Bypass Grafting;Report of a Case].

A 70-year-old man was admitted to our hospital because of shortness of breath. He had undergone coronary artery bypass grafting at another hospital 18 years before. We had detected his saphenous vein graft to the right coronary artery being aneurysmal 3 years before. The aneurysm had grown from 23 mm to 42 mm during the follow-up. Because of an angina-like symptom and the possibility of rupture, we performed resection of the aneurysm and redo coronary artery bypass grafting to the right coronary artery using another saphenous vein. His symptom has disappeared since then. Saphenous vein graft aneurysm needs close follow-up even when conservative therapy is selected.