Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal with tortuosity of the thoracic aorta . The hilar contours are unchanged . The lungs are mildly hyperexpanded . Again appreciated are diffuse increased interstitial lung markings suggestive of chronic interstitial abnormality . There is no focal consolidation worrisome for pneumonia . There is no pleural effusion or pneumothorax . The osseous structures are grossly unremarkable .
    OUTPUT:
    
No significant change compared to prior study with redemonstration of mild hyperinflation and global increased interstitial markings most compatible with emphysema .