Double coronary arteriovenous fistula.

Coronary arteriovenous fistula is an uncommon, although not rare, congenital cardiac malformation, especially in the adult. Most such reported such cases have involved but a single coronary vessel. This report documents the second case of coronary arteriovenous fistulae involving the right and circumflex coronary vessels draining into the coronary sinus. At the present time the patient is free of definite ischemic symptoms or obvious impairment of hemodynamic function and is being followed-up medically.