Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart is upper limits of normal in size . Mid and lower lung predominant peribronchovascular and peripheral lung opacities appear relatively similar to the recent study and have been more fully characterized on CT .
    OUTPUT:
    
Persistent peribronchovascular and peripheral mid and lower lung opacities . Although findings are unchanged since the most recent study , there has been slight improvement when compared to earlier study of ___ .