A Rare Cause of a Continuous Murmur in a Newborn.

We describe what we believe to be the first reported case of a neonate with right coronary ostial atresia with the right coronary artery originating from the left circumflex coronary artery, in conjunction with a right coronary artery to right ventricle fistula in a patient with otherwise normal cardiac anatomy. This was found following an evaluation for a continuous murmur at 2 weeks of life with elevated troponin and abnormal electrocardiogram. Thus far the child has required no intervention and is asymptomatic at 17 months of age, but he will require long-term follow-up to monitor the size of the fistula and potential for myocardial insufficiency.