Coronary artery fistula is a rare congenital anomaly. Most patients with this anomaly are asymptomatic, but some may develop heart failure, myocardial ischemia or arrhythmias. We report a case of a patient who presented with myocardial ischemia secondary to persistent Thebesian veins. Coronary angiography demonstrated a marked capillary blush draining into the left ventricular cavity through multiple microfistulae from the left anterior descending artery, left circumflex artery and right coronary artery. The patient was discharged without chest pain and was medically maintained with a beta-blocker and angiotensin converting enzyme inhibitor.
Keywords: Arteriovenous fistula; Coronary angiography; Coronary vessel anomalies; Myocardial ischemia.