Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are hyperinflated , with severe upper lobe predominant emphysema . There is mild interstitial pulmonary edema which is new from ___ . There is no focal consolidation . No pleural effusion or pneumothorax . Heart size is mildly enlarged . No acute osseous abnormalities identified .
    OUTPUT:
    
1 . Interval appearance of mild interstitial pulmonary edema superimposed on a background of emphysema .