LAO caudal view of the LAD after PTCA and LAD stent placement. Patent LAD after stent (black arrow) with continued visualization of LAD to pulmonary artery fistula (red arrow).Red arrow, left anterior descending artery to pulmonary artery fistula; black arrow, patent left anterior descending artery after drug-eluting stent; LAD, left anterior descending artery; LAO, left anterior oblique; PTCA, percutaneous transluminal coronary angioplasty