Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided demonstrate mild interstitial edema . No evidence of pneumonia . No large effusion or pneumothorax . The heart size is normal . Mediastinal contour is unremarkable . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Mild interstitial pulmonary edema .