Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lines and Tubes : Intra-aortic balloon pump terminates 2 cm from the apex of the aortic arch . Swan - Ganz catheter is unchanged in location . EKG leads overlie the chest wall . Lungs : Persistent opacification of the right hemi thorax sparing a portion of the right upper and mid zones . Left lung is clear . Pleura : There is a persistent large right - sided pleural effusion with mediastinal shift to the left side . No pneumothorax . Mediastinum : Mediastinum appears shifted to the left side secondary to the large right pleural effusion . Bony thorax : Unchanged compared to the prior radiograph .
    OUTPUT:
    
Intra-aortic balloon pump terminates 2 cm from the apex of the aortic arch . Persistent large right pleural effusion and , likely underlying atelectasis . Mediastinum remains shifted to the left side .