Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left chest wall the single lead AICD is present . The patient is status post prior median sternotomy . Minimal left basilar atelectasis . No focal consolidation , pleural effusion or pneumothorax is identified . The size of the cardiac silhouette is markedly enlarged but unchanged .
    OUTPUT:
    
No evidence of pulmonary edema . Markedly enlarged cardiac silhouette , unchanged .