<prompt> Which of the following features on X-ray chest can differential an Atrial septal Defect ASD from a Ventricular Septal Defect VSD?Enlarged Left AtriumPulmonary PlethoraEnlarged pulmonary AeryEnlarged Aoa  <response>: Left atrial enlargement is not seen in an ASD. In ASD cardiomegaly is due to enlargement of the right atrium and right ventricle. In VSD cardiac silhouette is of left ventricular type. Ref: Essential pediatrics by O.P.Ghai 6th ednpage 401, 403. 