Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild pulmonary edema . There is no confluent consolidation . No large effusion or pneumothorax on this portable film . Cardiac silhouette is mildly enlarged , similar compared to prior . Median sternotomy wires are again noted .
    OUTPUT:
    
Mild pulmonary edema . No focal consolidation .