Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart does not appear enlarged . The aorta is unfolded , contributing to prominence of the mediastinal silhouette . The hila are also slightly prominent , with a tapered appearance . An IABP is present -- the tip overlies the expected location of the descending aorta . However , the radiopaque tip probably lies approximately 2 .5 cm below the inferior edge of the aortic arch itself . There is upper zone redistribution , without overt CHF . No focal consolidation . Minimal bibasilar atelectasis . No gross effusion . No pneumothorax detected .
    OUTPUT:
    
The IABP tip overlies the descending aorta , approximately 2 .5 cm below the expected site of the inferior edge of the aortic arch . Clinical correlation regarding potential advancement is requested . Addendum : At this time , a subsequent chest x-ray is available and shows that the balloon pump has been removed .