Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate enlargement of the cardiac silhouette . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
1 . Moderate enlargement of the cardiac silhouette . 2 . No evidence of interstitial lung disease .