A rare adult case of left main coronary artery atresia.

We report a 65-year-old woman with congenital left main coronary artery atresia detected by coronary angiography and 320-slice multidetector computed tomography. The patient was hospitalized with congestive heart failure and treated by medical therapy conservatively. Surgical revascularization of the left coronary artery was not performed since stress myocardial perfusion scintigraphy revealed no clear evidence of myocardial ischemia. Recently, there are many patients with congenital coronary artery anomalies detected by multidetector computed tomography. However, the adult case of left main coronary artery atresia is extremely rare. In this case, 320-slice multidetector computed tomography played a pivotal role in the diagnosis of the extremely rare coronary artery anomaly.