Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is enlarged and relatively unchanged . There is an intra-aortic balloon pump with the tip terminating in the lower thoracic aorta approximately 11 cm distal from the aortic knob . The Swan - ___ catheter appears to be in good position . Nasogastric tube is also seen and in unchanged position . The mild pulmonary edema appears stable when compared with most recent study with Previous right lower lobe opacity and decreased left lower lobe opacity which could represent superimposed pneumonia however the chronicity of changes is abnormal .
    OUTPUT:
    
1 . Interval improvement of left lower lobe opacity and worsening of right lower lobe opacity raising concern for superimposed pneumonia on top of stable mild pulmonary edema . 2 . Intra-aortic balloon pump terminates in the lower thoracic aorta with well - positioned Swan - Ganz catheter . 3 . Stable mild pulmonary edema .