Fig. 1

a Coronary angiography demonstrating a coronary artery fistula between the right coronary artery (RCA) and the pulmonary artery (PA) by white arrows. b Coronary angiography demonstrating a coronary artery fistula between the left anterior descending artery (LAD) and the main pulmonary artery by small white arrows. Moreover, coronary angiography demonstrating a poor development of the distal LAD by bold white arrows. c Shunt between the RCA and PA is blocked by coil embolization (black arrow). d Shunt between the LAD and PA is blocked by coil embolization (black arrow)