Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . The thoracic aorta is diffusely calcified . The mediastinal and hilar contours are normal . Lungs are clear . No pleural effusion or pneumothorax is demonstrated . No acute osseous abnormalities identified .
    OUTPUT:
    
No acute cardiopulmonary abnormality .