Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previous areas of heterogeneous opacification and mild interstitial abnormality scattered through the lungs in ___ have cleared . A micronodular quality of the abnormality was visible on earlier chest radiographs and the chest CT done on ___ . Hyperinflation indicates severe airtrapping , a chronic finding . Cardiomediastinal and hilar contours and pleural surfaces are normal .
    OUTPUT:
    
PA and lateral chest compared to ___ through ___ .