Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Lung volumes remain low . Heart size is normal . Aortic knob calcifications are demonstrated . Chronic interstitial abnormality is most pronounced along the periphery and lung bases , not substantially changed in the interval . No new focal consolidation , pleural effusion or pneumothorax is visualized . No overt pulmonary edema is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Relatively similar appearance of the chest with findings compatible with chronic interstitial lung disease . No gross focal consolidation identified .