Fetal Diagnosis of Dextroposition, Left Pulmonary Artery Sling, Partial Anomalous Left Pulmonary Artery, and Aortic Coarctation

Abstract

Left pulmonary artery (LPA) sling is a rare congenital anomaly accounting for less than 1% of congenital cardiac defects.1 Left pulmonary artery sling is often associated with high respiratory morbidity and mortality due to accompanying tracheal stenosis.1-3 The complex vasculature of the upper chest makes identification of a vascular anomaly challenging on transthoracic echocardiography due to air-filled trachea and lungs, but these structures may be defined by fetal echocardiography, when the trachea and lungs are fluid filled.