RESUMO
The incidence of coronary artery aneurysms ranges from 0.2% to 10.5%. Aneurysms have been described after percutaneous coronary interventions (PCIs) and hypersensitivity to polymers, nickel, cobalt, inflammatory reaction rich in eosinophils, drug released by the stent, fracture and malapposition of the stent, stent endothelialization delay, high pressures used in the procedures, oversizing of balloons and stents, unhealed dissections, atheroablative techniques, and trauma of the arterial wall are related to appearance of coronary artery aneurysms. In this case report, we described a patient with human immunodeficiency virus and thrombophilia who underwent primary PCI and at the end of the procedure had thrombi in the coronary artery. It was decided by triple therapy and new angiographic study 2 days later. This new angiography revealed thrombi resolution but the appearance of an aneurysm in the middle portion of the drug-eluting stent. The anticoagulant was stopped and we performed watchful waiting strategy with new serial angiograms that revealed progressive reduction and disappearance of the aneurysm. Subsequently triple therapy with warfarin, aspirin and clopidogrel was restarted and the patient progressed asymptomatic and performed his daily activities normally. At 6 months of clinical follow-up, we advised the patient to suspend aspirin and to continue secondary prevention of cardiovascular events.