Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post coronary artery bypass graft surgery . The heart is normal in size . Coronary arteries appear calcified , possibly with stents . The lungs appear clear . There are no pleural effusions or pneumothorax . Small osteophytes are noted along the mid thoracic spine . There has been no significant change .
    OUTPUT:
    
No evidence of acute disease .