Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lower half of the chest has not been included on this radiograph . Again visualized is a large right pleural effusion with underlying right lower and middle lobe atelectasis . Swan - Ganz catheter is in appropriate position . Intra aortic balloon pump remains less than 1 cm from the apex of the aortic arch and should be slightly retracted . Small left pleural effusion persists . No interval change in bony thorax .
    OUTPUT:
    
No significant interval change compared to ___ .