AbstractGiant congenital intrapericardial aneurysms of the left atrial appendage and body are unusual cardiac anomalies. Only 48 cases have been previously reported in the literature, with the vast majority presenting in otherwise healthy young patients. These can present clinically with persistent arrhythmias and progress to stroke if not diagnosed and treated. Our index case is that of a 34‐year‐old woman discovered to have a giant left atrial aneurysm who developed intermittent palpitations with sinus tachycardia. We present a review of the literature pertaining to their diagnosis, potential morbidity, and surgical management. (J Card Surg 1996; 11: 147
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