Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right IJ central line in place , probably similar in position , though the right heart border is now completely obscured . Compared to the prior film , there has been significant increased opacification of the right lung . The right lung apex is now opacified and there is increased opacification at the right lung base . Previously seen opacity in the right lung is now denser . If a small residual pneumothorax is present , it is difficult to discern on the current film . The right basal pleural drain is again noted , best seen on the edge - enhanced image . The right mainstem bronchus is truncated immediately beyond the carina . Possible slight rightward shift of the trachea and mediastinum , but no gross rightward shift of the mediastinum is suggested . On the left , there is mild upper zone redistribution and atelectasis at the left lung base , similar to the prior study . On the left , no new infiltrate or consolidation and no gross effusion . No overt CHF .
    OUTPUT:
    
Increased opacification of the right lung , which has progressed over multiple films . Since the most recent prior film , the right apex and right base are now almost completely opacified and the central opacity is denser . Possible interval mild rightward shift of the mediastinum . The etiology is uncertain , but this could reflect accumulating pleural fluid versus progressive lung collapse . If clinically indicated , CT could help to more completely characterize the findings in the right lung . On the left , mild upper zone redistribution and basilar atelectasis again noted , similar to the prior film , but the left lung remains otherwise grossly clear .