Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a right - sided chest tube . There has been minimal decrease in the size of the right pleural effusion with persistent pleural fluid seen . There is persistent right middle and right lower lobe atelectasis . Lung volumes remain low on the right . No left - sided pleural effusion seen . No pneumothorax seen . The cardiomediastinal contour is unchanged compared to the prior study .
    OUTPUT:
    
Persistent right pleural effusion following chest tube placement .