 Computed tomography angiography showing giant coronary aneurysm involving the left anterior descending (LAD), the circumflex (CX) artery, and the right coronary artery. The patient is a 53-year-old woman with no cardiovascular risk factors or positive anamnesis for Kawasaki disease who presented to the emergency department for angina. Electrocardiography showed diffuse repolarization abnormality but no ST-segment elevation. Troponin levels were elevated and a diagnosis of acute coronary syndrome, non-ST-elevation myocardial infarction was established. 