Coronary artery aneurysms: the chest pain "zebra".

Coronary artery aneurysms (CAAs) are defined as entire wall dilatation to 1.5 times the size of the adjacent normal vessel. They can present as chest pain with electrocardiogram (ECG) changes, mass effects or rupture with tamponade. This case describes the presentation of a patient with a ST elevation myocardial infarction and concurrent end stage renal failure, and the options for treatment in this rare condition.