Coronary artery aneurysmal fistula: a late complication of stent deployment

An unusual case of a coronary artery fistula with the right atrium is described. Four months following the placement of a stent in a high grade, complex lesion of the proximal right coronary artery, restenosis, and contrast spill with rapid clearance into the right atrial space was evident on coronary angiogram. The calculated shunt fraction was trivial and hemodynamically insignificant.