| A rare congenital vascular malformation of the major vessels with characteristics of a persistent left superior vena cava that drains through the left coronary sinus to the left atrium. Patients are usually asymptomatic and this is discovered incidentally, however hypoxia, cyanosis, murmurs, palpitations, cardiac structural anomalies (e.g. atrial septal defect, bicuspid aortic valve, cor triatriatum) and risk of paradoxical embolization may be associated. |
