Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is moderate enlargement of the cardiac silhouette , increased compared to the prior study , accentuated by the projection . Aside from scarring in the lingular the lungs are grossly clear . . There is no large pleural effusion . No pneumothorax .
    OUTPUT:
    
Moderate enlargement of the cardiac silhouette . .