Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy . The heart is normal in size . The cardiomediastinal and hilar contours are within normal limits . There is mild pulmonary vascular congestion and mild interstitial edema . No pneumothorax is identified .
    OUTPUT:
    
Mild pulmonary vascular congestion and mild pulmonary edema .