Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperexpanded consistent with COPD . Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
1 . No evidence of mass or rib fracture . 2 . Hyperexpansion consistent with COPD .