Anomalous origin of right coronary artery from pulmonary artery.

A 67-year-old female was incidentally found to have an anomalous right coronary artery (RCA) arising from the pulmonary artery during evaluation of her aortic valve disease. The left main, left anterior descending, and circumflex coronary arteries were mildly dilated. Large collaterals from the left filled the RCA retrogradely. During surgery, a circumferential web was found at the ostia of the RCA. The patient underwent an aortic valve replacement, resection of the web, and translocation of the anomalous RCA into the aorta.