Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cradiomediastinal and hilar contours are normal . The lungs are clear without consolidation , pleural effusion or pneumothorax . Mild prominence of the interstitial markings , suggests mild edema . Bilateral rib deformities relate to old fractures .
    OUTPUT:
    
Mild pulmonary edema .