Effectiveness of Bare Metal Stent Implantation for the Treatment of Coronary Artery Aneurysm: A Multimodality Imaging Evaluation.

Coronary artery aneurysm (CAA) after sirolimus-eluting stent (SES) implantation is one of the most troublesome problems associated with first-generation drug-eluting stents. However, the natural course and standard therapy of CAA has been unknown. A 49-year-old man underwent SES implantation for the left anterior descending artery. Follow-up coronary angiography (CAG) revealed CAA in the SES. We performed bare metal stent (BMS) implantation for treatment of CAA. Ten months after the BMS implantation, the size of the CAA had diminished, and a very thin layer of endothelium on the BMS was observed by optical coherence tomography. CAG assessment revealed that the blood stream of the CAA had been obstructed. We herein report a case of CAA after SES implantation with eight years of follow-up and the findings of a multimodality imaging evaluation.