Coronary artery fistula is an uncommon but hemodynamically significant anomaly of the coronary arteries,
occurring as an incidental finding in 0.1% to 0.2% of coronary angiograms. Although half of the patients
with a coronary artery fistula remain asymptomatic, the other half develops CHF, infective endocarditis,
myocardial ischemia, or rupture of an aneurysm. This report is illustrative of the right coronary artery fistula
to the right pulmonary artery in a 57-year-old male. The definitive diagnosis was made during transesophageal
echocardiography and confirmed at operation
