Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior chest radiograph from ___ , there has been minimal improvement of the right - sided pleural effusion . There is atelectasis at the base of the right lung . There is no pneumothorax . Posttreatment changes of the right middle lobe mass are unchanged . No vascular congestion or acute focal consolidations are noted .
    OUTPUT:
    
Minimal improvement of right - sided pleural effusion with no pneumothorax .