Anomalous origin of single coronary artery from pulmonary artery: serendipitous diagnosis and successful surgical treatment.

Anomalous origin of a single coronary artery from the pulmonary artery is a rare and potentially fatal congenital heart malformation. Although the actual incidence is not known, it is rarer than anomalous left coronary artery from pulmonary artery. In the absence of other important congenital cardiac anomalies, patients with anomalous origin of a single coronary artery from the pulmonary artery typically experience myocardial ischemia in association with the physiological decrease in the pulmonary vascular resistance that typically occurs over the first few months of life.