Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appears unchanged . There is no pleural effusion or pneumothorax . Parenchymal abnormalities appear unchanged and reflect emphysema with mild accompanying interstitial disease . Subpleural scarring and a small hyperdense nodules at the right lung apex appear unchanged . Scarring and bullous changes are also stable at the base of the left chest . The chest is hyperinflated . There has been no significant change .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .