Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . The chest is hyperinflated . There is no pleural effusion or pneumothorax . Irregular bronchovascular architecture in the upper lungs suggests emphysema but there is no focal opacification . No free air is seen .
    OUTPUT:
    
Findings suggesting obstructive pulmonary disease . No evidence of acute cardiopulmonary process or free air .