Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is enlarged and relatively unchanged from most recent same - day study . With change in positioning from previous study the right lower lobe opacity appears to have improved with with an unchanged left lower lobe opacity raising the concern that all these findings are related to improving pulmonary edema , although superimposed pneumonia can not be completely excluded given the current clinical picture . The intra aortic balloon pump is unchanged from most recent study in the distal thoracic aorta . The Swan - Ganz catheter tip is unchanged and well positioned . The ETT is seen and terminates in the mid trachea . Nasogastric tube is unchanged in position .
    OUTPUT:
    
1 . Interval improvement of right lower lobe opacity and stable left lower lobe opacity raising concern for findings related to improving pulmonary edema though superimposed pneumonia can not be completely excluded . 2 . Intra-aortic balloon pump terminates in the lower thoracic aorta with well - positioned Swan - Ganz catheter . Stable mild pulmonary edema .