Anomalous Right Coronary Artery Arising from the Pulmonary Artery with Associated Enlargement of the Left Coronary Artery: A Case Report.

An anomalous right coronary artery arising from the pulmonary artery (ARCAPA) is among the least common form of congenital coronary anomalies, accounted for the incidence of only 0.002% in the general population. Most ARCAPA patients have no symptoms but may develop myocardial ischemia. Surgical correction of the anomaly is recommended to prevent subsequent fatal outcomes. Here, we reported a case of a 2-year-old female child initially hospitalized for diarrhea, but later diagnosed with an ARCAPA through echocardiogram and computed tomography. Surgical reimplantation of the right coronary artery from the pulmonary artery to the ascending aorta was performed. The patient recovered well from the surgery with no postoperative complications. In the follow-up assessments, normal coronary function and myocardial effusion were demonstrated.