Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has bean minimal improvement of the aeration in the right lower lobe still with a large area of atelectasis . Collapsed right middle lobe is unchanged . The upper lungs are clear . Minimal opacities / atelectasis in the left lower lobe have improved . There is no pneumothorax or enlarging pleural effusions . Right port - a cath , NG tube and right chest tubes are in unchanged position . New catheter projects in the left supraclavicular region , does not cross midline and projects in the expected position of the left subclavian vein .
    OUTPUT:
    
Persistent collapse of the right middle lobe . Minimally improved aeration of the right lower lobe still has a large area of atelectasis