Anomalous Origin of the Right Coronary Artery From the Left Coronary Cusp Presenting as a Non-ST-Elevation Myocardial Infarction (NSTEMI).

Coronary artery anomalies are relatively uncommon in the general population with a roughly 1% incidence. Though oftentimes asymptomatic, these anomalies can be detrimental, resulting in myocardial infarction and even sudden cardiac death. Here, we present a case in which a 65-year-old male presented to the emergency room with substernal chest pain that radiated into his left arm.