Right Coronary Artery Aneurysm Communication with the Right Atrium Following Non–ST-Elevation Myocardial Infarction Treated With Coil Embolization

A 78-year-old man with a known right coronary artery aneurysm (CAA) for 24 years presented with persistent chest discomfort to our institution. It was previously noted that his right CAA measured 3.9 × 3.6 cm, was composed of a subtotally thrombosed lumen, and had no fistula formation into adjacent cardiac chambers on both transthoracic echocardiography (TTE) and cardiac MRI (Figure 1 and online-only Data Supplement Movie I, respectively). The cardiac MRI indicated aortic stenosis and an ejection fraction of 55% with no regional wall motion abnormalities. Late gadolinium enhancing demonstrated no evidence of myocardial scar or fibrosis, and normal ventricular function, as well (Figure 2 and online-only Data Supplement Movie II, respectively). The patient’s presentation to our …