Right coronary artery originating from distal left circumflex: an unusual feature of single coronary artery.

This report describes a patient with a single coronary artery system, in whom the right coronary artery originated from the distal left circumflex. A significant stenosis was present just at the take-off of the aberrant right coronary artery. No other associated cardiac anomaly could be demonstrated; the patient was referred for elective bypass surgery.