Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal with moderate unfolding of the thoracic aorta . Surgical clip projecting over the right hilus is unchanged , as are post-surgical changes in right lung . Cardiomediastinal silhouette and hilar contours are otherwise normal . Lungs are clear . Pleural surfaces are clear without effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Specifically no cardiomegaly .