Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Heart size is normal . The aorta remains tortuous and demonstrates mild atherosclerotic calcifications diffusely . The lungs are hyperinflated with mild emphysematous changes again noted towards the apices . Increased interstitial markings along the periphery and lung bases is relatively similar compared to the previous exam , compatible with chronic changes . No new focal consolidation , pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality including no evidence of pneumonia . Chronic interstitial changes at the lung bases . Emphysema .