[Two cases of aorto-coronary bypass grafting for two different types of single coronary artery].

Single coronary artery is a rare congenital anomaly and its prognosis is good. This entity can be diagnosed only by coronary angiography in lift. Atherosclerotic obstruction of a single coronary artery causes a high incidence of sudden death, so this anomaly does not take a good course. We present two cases of CABG which have two different types of single coronary artery with some significant stenoses of the coronary arteries.