Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable chest radiograph was provided . Compared to the most recent prior study , the lung volumes are low . Again seen is interstitial prominence , likely representing pulmonary edema superimposed on background of emphysema . There are no pleural effusions or pneumothorax . The heart remains enlarged . No focal consolidations are identified . Calcification in the left axilla is stable .
    OUTPUT:
    
Low lung volumes with pulmonary edema superimposed on emphysema with no pneumonia .