Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated and grossly clear . Cardiomediastinal and hilar silhouettes are normal . Pleural surfaces are normal .
    OUTPUT:
    
Hyperinflated lungs which may represent underlying obstructive airways disease . Clinical correlation is recommended to assess for possible asthma or COPD . No evidence of interstitial lung disease or cardiomegaly .