Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . There are low lung volumes . There is small left and trace right bilateral pleural effusions . The cardiac and mediastinal silhouettes are stable . There is mild pulmonary edema . No pneumothorax is seen .
    OUTPUT:
    
Small left and trace right bilateral pleural effusions and mild pulmonary edema consistent with volume overload .