Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is moderate to severe pulmonary edema . Emphysematous changes are seen in the upper lobes bilaterally . The heart is top - normal in size . The patient is status post CABG . No pneumothorax or pleural effusion .
    OUTPUT:
    
Moderate to severe pulmonary edema . Acute pulmonary edema is most common in the setting of acute myocardial infarction .