摘要
Congenital coronary sinus(CS)fistula is a rare form of cardiac abnormality.The fistula forms an abnormal communication between the cardiac chambers and the coronary arteries.The most common form of fistula arises from the right coronary arteries while the left ventricular and CS fistula is rare.Coronary slow-flow phenomenon(CSFP)is defined as a delayed opacification of distal vessels without any epicardial disease.[1]
