Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear of focal consolidation , pleural effusion or pneumothorax . There is no pulmonary edema . The heart is normal in size . Mediastinal and hilar contours are within normal limits . The patient is status post median sternotomy , and mediastinal surgical clips are noted .
    OUTPUT:
    
No acute cardiopulmonary process . No hiatal hernia appreciated .