Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right pleural effusion has decreased since prior . No pneumothorax . No subcutaneous emphysema . Right basilar atelectasis is improved . Small left pleural effusion , similar or more prominent . Mild left basilar atelectasis , more prominent . Shallow inspiration . Normal heart size , pulmonary vascularity .
    OUTPUT:
    
Interval improvement of right pleural effusion , no pneumothorax .