Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated . Upper lobe predominant emphysema is noted . There is no focal consolidation concerning for pneumonia . No pleural effusion or pneumothorax is detected . The cardiac silhouette is normal in size . The mediastinal and hilar contours are within normal limits . Moderate calcification of the aortic knob is noted . There is kyphotic curvature of the thoracic spine .
    OUTPUT:
    
Emphysema . No focal consolidation concerning for pneumonia .