Anomalous Origin of the Right Coronary Artery from the Left Anterior Descending Coronary Artery in a Patient with Ascending Aortic Aneurysm

The incidence of coronary artery anomalies has been reported between 0.6 to 1.3% in angiographic series and 0.3% in autopsy series. An isolated single coronary artery (SCA) is even a rarer congenital anomaly occurring in approximately 0.02% of the population. The ectopic origin of the right coronary artery (RCA) from the left anterior descending (LAD) artery is relatively rare and more benign than other types of anomalous origin of the RCAs. We report a case of an adult male patient with SCA anomaly in which the RCA takes off from the mid LAD. To the best of our knowledge, SCA anomaly coinciding with ascending aortic aneurysm which was treated with Bentall operation has never been described before.