ANOMALOUS origin of the coronary arteries is a congenital anomaly which is found relatively infrequently.1 Only four cases were noted among 6,800 autopsies at the Massachusetts General Hospital (Bland, White, Garland), while Abbott2 found the condition in 10 of 1,000 patients with congenital heart disease. Soloff3 (1942) reviewed the cases of anomalous origin in the medical literature and added 1 case to the 16 that he found in which the left coronary artery originated from the pulmonary artery. He found two cases in which the right coronary artery originated from the pulmonary artery, and two other cases in which both coronary arteries arose from the pulmonary arteries. Other types of anomalous coronary vessels are very rare, such as both coronary vessels arising from the aorta. the accessory coronary vessels arising from elsewhere, and only one coronary artery supplying branches of both the left and the right ventricles.
KEIZER DPR, ROCHAT RR. ANOMALOUS ORIGIN OF LEFT CORONARY ARTERY. AMA Am J Dis Child. 1952;83(6):769-773. doi:10.1001/archpedi.1952.02040100067006