A 75-year-old man presented with typical angina 13 years after coronary artery bypass grafting. Angiography demonstrated a patent internal mammary graft to the left anterior descending artery and vein graft to the obtuse marginal branch of the left circumflex artery. The large-caliber right coronary graft had a large false aneurysm in its midportion, at the site of a severe stenosis. The aneurysm …