Anomalous origin of the circumflex or left anterior descending artery from the pulmonary artery (ACxAPA and ALADAPA, respectively) are rare congenital coronary anomalies with clinical presentation varying from an asymptomatic murmur to sudden cardiac arrest. A systematic review was performed, and 46 cases of ACxAPA and 51 cases of ALADAPA were identified in 87 articles. Data were collected and analyzed from each case. A better understanding of ACxAPA/ALADAPA can provide information to providers who encounter this lesion as well as provide insight into coronary artery development which may help in the understanding of coronary artery anomalies.
Keywords: anomalous origin of a branch left coronary artery from the pulmonary artery; anomalous origin of the circumflex artery from the pulmonary artery; anomalous origin of the left anterior descending artery from the pulmonary artery; coronary artery anomalies.