Giant coronary arteriovenous fistula. A case report and review of the literature.

Coronary artery fistulas are rare congenital anomalies. Although they constitute the most common form of hemodynamically significant coronary malformation, the incidence is around 0.002% in the general population. We report the successful surgical closure of a very large coronary artery fistula, originating from the left coronary artery and draining into the right atrium with left-to-right shunt of more than 50% and a review of the literature.