Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is top normal . Mediastinal and hilar contours are normal . Lungs are clear . Pulmonary vasculature is normal . No pleural effusion or pneumothorax is seen . No acute osseous abnormalities are visualized . Clips in right upper quadrant indicate prior cholecystectomy . Left neck clips indicate prior parathyroid surgery .
    OUTPUT:
    
No acute cardiopulmonary abnormality .