Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is diffuse lower lobe predominant opacities bilaterally , concerning for multi focal pneumonia . Superimposed pulmonary edema is mild . Background increased interstitial markings are suggestive of underlying emphysema . No pneumothorax or large pleural effusions . Cardiac silhouette is top normal size .
    OUTPUT:
    
Diffuse lower lobe predominant opacities in bilateral lungs are concerning for multifocal pneumonia . Mild pulmonary edema .