Prenatal diagnosis of left‐sided aortic arch, right descending aorta and right‐sided ductus arteriosus associated with anomalous origin of left pulmonary artery from ascending aorta

Abstract

Left‐sided aortic arch (LAA), right descending aorta (rDAo), and right‐sided ductus arteriosus (RDA) constitute a rare aortic arch anomaly. Moreover, anomalous origin of the pulmonary artery from the ascending aorta, especially that of the left pulmonary artery, is also a rare anomaly of the pulmonary artery branches. Because of the presence of the ductus arteriosus, prenatal ultrasound is an optimal diagnostic tool for the LAA with rDAo. Four‐dimensional color Doppler can clearly demonstrate the spatial relationship between the LAA, rDAo, and RDA and the anomalous origin of the left pulmonary artery from the ascending aorta.