Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: 2 views were obtained of the chest . The lungs are hyperexpanded with interstitial abnormality suggesting emphysema . Blunting of the left costophrenic angle reflects unchanged localized pleural and parenchymal scarring with volume loss . Biapical scarring is similarly unchanged . There is no pneumothorax . The heart is normal in size with tortuous aortic contour . Mild height loss of the vertebral bodies in the mid thoracic spine is unchanged .
    OUTPUT:
    
Emphysema without acute intrathoracic process .