Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aorta is diffusely calcified . Mediastinal and hilar contours are normal . Lungs are hyperinflated . Linear opacities in the lung bases either reflect scarring or atelectasis . No large pleural effusion or pneumothorax is identified though the costophrenic angles are not completely encompassed on the field of view . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality .