Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post sternotomy . The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There is no pleural effusion or pneumothorax . Streaky opacity in the medial right middle lobe suggests minor atelectasis . The bones appear within normal limits .
    OUTPUT:
    
No evidence of acute disease .