Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small to moderate right pleural effusion is minimally decreased . Otherwise there is no appreciable change . Chronic atelectasis and scarring in the right upper lobe and perihilar opacities radiating from the hilum are unchanged . The left lung is relatively clear . Heart size is unchanged . There is no pneumothorax .
    OUTPUT:
    
Minimal decrease in right pleural effusion . No pneumothorax .