“…Coronary artery aneurysm (CAA), defined as a localized dilatation of the coronary artery with a diameter ≥ 1.5 times that of an adjacent coronary segment, has been observed in 0.2 to 4.9% of patients undergoing coronary angiography [1–9]. CAA most often involves the right coronary artery followed in frequency by the left anterior descending [10–14]. Most CAA are atherosclerotic in origin, although other etiologies include congenital aneurysms, Kawasaki syndrome, infectious arteritis, and coronary trauma, including that related to percutaneous coronary intervention [1].…”