Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild enlargement of the cardiac silhouette which is unchanged . Mediastinal and hilar contours are stable . The pulmonary vascularity is not engorged . Chronic interstitial abnormalities are again seen diffusely , more pronounced at the lung bases with fibrotic changes . No focal consolidation , pleural effusion or pneumothorax is identified . There is diffuse calcification of the aorta .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Chronic interstitial lung disease , which on the prior CT of the chest from ___ suggested usual interstitial pneumonia .