Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged , unchanged . Mediastinal and hilar contours are similar . Pulmonary vasculature is not engorged . Mild interstitial abnormality is seen within the lung bases , similar to prior , likely reflective of a chronic interstitial lung disease as seen on the prior chest CT . No focal consolidation , pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Mild chronic interstitial lung disease .