Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of the cardiac silhouette is again noted , unchanged . The mediastinal and hilar contours are similar . Lungs are clear . Pulmonary vasculature is normal . No pleural effusion or pneumothorax is present . Cholecystectomy clips are demonstrated in the right upper quadrant of the abdomen .
    OUTPUT:
    
No acute cardiopulmonary abnormality .