Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Intra-aortic balloon pump tip projects no more than 12 mm below the apex of the aortic arch and its slightly higher location relative to ___ may be secondary to patient positioning . Normal cardiomediastinal and hilar contours . Normal pleural surfaces . Fully expanded , clear lungs .
    OUTPUT:
    
Intra-aortic balloon pump tip projects no more than 12 mm below the apex of the aortic arch .