Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . The mediastinal and hilar contours are unremarkable . Scarring within the lung apices is unchanged . The lungs are otherwise clear and the pulmonary vascularity is normal . The lungs are hyperinflated compatible with underlying chronic obstructive pulmonary disease . No pleural effusion or pneumothorax is present . No acute osseous abnormalities are seen .
    OUTPUT:
    
No acute cardiopulmonary abnormality .