Progressive aneurysmal dilation of coronary arterial fistula after transcatheter closure: successfully treated by a second occlusion device.

We report on a 6-year-old boy with a huge right coronary artery to the right ventricle fistula, who had previously been treated by device closure at the right ventricular exit point. However, 3 years later, the right coronary artery aneurysm showed progressively dilation and compressed the right ventricle. To prevent further complications related to the aneurysm, the proximal part of the aneurysm was successfully occluded by a vascular plug.