Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . The heart size remains moderately enlarged but unchanged . The aorta is tortuous and diffusely calcified . There is mild chronic interstitial abnormality , similar compared to the prior exam . Emphysematous changes are most pronounced within the right lung apex . Minimal blunting of the costophrenic sulci posteriorly on the lateral view likely reflects chronic pleural thickening . No overt pulmonary edema is present . Streaky bibasilar opacities likely reflect atelectasis . There is scarring within the lung apices . No focal consolidation or pneumothorax is identified . There are no acute osseous abnormalities . Multilevel degenerative changes are seen within the thoracic spine .
    OUTPUT:
    
Mild chronic interstitial abnormality suggestive of an underlying chronic interstitial lung disease and emphysema . No new focal consolidation identified .