Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated . Known left upper lobe pulmonary nodule is not clearly delineated . There is subtle opacity at the lung base medially which also seen posteriorly on the lateral view . Elsewhere , no focal consolidation identified . Cardiomediastinal silhouette is within normal limits . Known left hilar adenopathy better seen by prior CT .
    OUTPUT:
    
Hyperinflation with subtle bibasilar opacities seen medially . These could represent infection in the proper clinical setting . Known left upper lobe pulmonary nodule and left hilar adenopathy better seen on prior PET - CT .