Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . The lungs are hyperinflated . Increased interstitial opacities identified at the bases . Elsewhere , the lungs are clear , there is no effusion . The cardiomediastinal silhouette is within normal limits . Probable small hiatal hernia is identified . Hypertrophic change is identified in the spine without acute osseous abnormality .
    OUTPUT:
    
Hyperinflation . Bibasilar opacities which could be chronic , due to scarring although superimposed infection or potentially aspiration is also possible .