Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interstitial opacities in the right lower lung unchanged since ___ and in right mid lung which are new is concerning for interstitial pneumonia . Mild atelectasis is present in the left lung base . Heart size , mediastinal and hilar contours are normal .
    OUTPUT:
    
Interstitial pneumonia in right mid and lower lung .