Chest radiograph, angiogram, intraoperative, and pathologic images from a neonate with pulmonary artery sling and tracheal stenosis

(A) A chest radiograph shows a hyperexpanded right lung with flattening of the hemidiaphragm (arrowhead) and leftward shift of the cardiomediastinal silhouette (arrow).
(B) A pulmonary angiogram shows aberrant origin of the LPA (arrowhead) from the RPA (arrow).
(C) Intraoperative photograph demonstrates the LPA (arrow) coursing behind the trachea (*).
(D) Pathologic specimen shows the trachea has a focal narrowing above the bifurcation (arrow), likely due to complete tracheal rings at that location.