Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mildly enlarged . The hilar contour is stable . The mediastinum is slightly widened with a tortuous aorta . Again seen are reticular interstitial abnormalities more prominent at the lung bases consistent with known pulmonary fibrosis . There is no focal consolidation , effusion or pneumothorax . A surgical clip projects over the anterior mediastinum on lateral views . No acute bony changes identified .
    OUTPUT:
    
Interstitial prominence compatible with history of pulmonary fibrosis . No acute intrathoracic process .