Anomalous Left Coronary Artery from the Pulmonary Artery (ALCAPA) diagnosed in adulthood: A case report

We present a rare case of Anomalous Left Coronary Artery from the Pulmonary Artery (ALCAPA) diagnosed in adulthood. ALCAPA is a rare congenital coronary anomaly characterized by the left coronary artery (LCA) arising from the pulmonary artery instead of the aorta. This anomaly leads to diminished oxygen supply to the left ventricular myocardium, resulting in myocardial ischemia and potential life-threatening complications. While ALCAPA is typically diagnosed in infancy or childhood, cases in adulthood are extremely rare. We discuss the clinical presentation, diagnosis, and surgical management of ALCAPA in adulthood, highlighting the typical findings in cardiac imaging and the underlying mechanisms.