A case of giant coronary artery aneurysm after placement of a heparin-coated stent.

The formation of coronary aneurysms and pseudoaneurysms are a rare but previously described complication after percutaneous coronary intervention (PCI). We present a unique case of the development of a giant coronary aneurysm after placement of a heparin-coated stent. A 79-year-old female who had PCI to the left anterior descending coronary artery (LAD) using a heparin-coated stent three years previously underwent cardiac catheterization. Coronary angiography revealed a giant aneurysm measuring 19 x 18 mm immediately distal to the previously implanted stent in the LAD. The patient refused any further intervention and was treated with aggressive medical management. Eighteen months have now passed, and the patient has been stable without further cardiac events or complaints.