Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is extensive chronic interstitial abnormality . There is no new focal airspace consolidation . The hilar and cardiomediastinal contours are normal . There is no pneumothorax . There is no pleural effusion . Pulmonary vascularity is normal .
    OUTPUT:
    
Unchanged chronic interstitial lung disease . No new focal airspace consolidation .