Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is mildly enlarged . Mediastinal and hilar contours are normal . Lungs are clear . Pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is present . No acute osseous abnormalities demonstrated .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Mild enlargement of the cardiac silhouette .