Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tip of the intra-aortic balloon pump lies 2 .6 cm below the top of the aortic arch . A right transjugular Swan - Ganz catheter tip is unchanged , projecting over the right pulmonary artery . The size of the cardiac silhouette is enlarged but unchanged . No focal consolidation , pleural effusion or pneumothorax identified .
    OUTPUT:
    
The intra-aortic balloon pump lies 2 .6 cm from the top of the aortic arch . No other significant interval change since the prior examination .