Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . There is mild to moderate pulmonary edema and prominence of the central pulmonary vasculature . There are trace bilateral pleural effusions . The cardiac silhouette is mildly enlarged . The aorta is calcified and tortuous . No pneumothorax is seen .
    OUTPUT:
    
Trace bilateral pleural effusions , mild to moderate pulmonary edema , and mild enlargement of the cardiac silhouette may be due to CHF .