Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest was obtained . The heart is of top normal size , exaggerated by low lung volumes . Mild interstitial edema is present . No focal pulmonary consolidation , pleural effusion , or pneumothorax . The osseous structures are unremarkable . No radiopaque foreign bodies .
    OUTPUT:
    
Mild interstitial edema .