Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . The aorta remains tortuous . Mediastinal and hilar contours are otherwise unremarkable , and the pulmonary vasculature is not engorged . Lungs are hyperinflated with attenuation of the pulmonary vascular markings towards the apices , compatible with emphysema . No No focal consolidation , pleural effusion or pneumothorax is present . Streaky linear opacities within the lung bases likely reflect atelectasis . There is no pleural effusion or pneumothorax . Scarring within the lung apices is re - demonstrated . There are mild degenerative changes in the thoracic spine .
    OUTPUT:
    
No radiographic evidence for pneumonia . Emphysema .