Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated , but clear . Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . No pleural effusion or pneumothorax is seen . Severe costochondral calcification seen .
    OUTPUT:
    
Hyperinflated lungs , but no acute cardiopulmonary abnormality .