Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable chest radiograph demonstrates interval decrease in right - sided pleural effusion , now small . Residual linear opacification within the right lower lung likely represents atelectasis . Similar findings are noted on the left . Stable right upper lung mass better evaluated on recent CT chest . Otherwise , cardiomediastinal and hilar contours are unchanged .
    OUTPUT:
    
Interval decrease in right - sided pleural effusion , now small in size . Small left pleural effusion . Bibasilar atelectasis . Stable right upper lung mass . No pneumothorax .