Anomalous origin of the left coronary artery from the right sinus of Valsalva.

We present the clinical, angiographic and surgical findings in a 63-year-old man with anomalous origin of the left main coronary artery from the right sinus of valsalva. The course of the left main artery was abnormal in that it passed between the aorta and the pulmonary artery; in addition, there was obstructive disease involving the left main coronary artery. The association of these two entities in this age group is unusual.