Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior exam there has been some interval improvement in the right - sided lung disease but there is still some persistent alveolar infiltrate in scattered areas of the right lower lobe and right and left lateral lung . It is unclear how much of this is chronic disease or how much of it is persistent infection were
    OUTPUT:
    
Slight improvement in the interstitial markings bilaterally