Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal and hilar contours are unremarkable . Pulmonary vascularity is not engorged . There is no focal consolidation . Chronic interstitial abnormality is noted predominantly in both lung bases and along the periphery . No pleural effusion or pneumothorax is identified . Old displaced fracture involving the left proximal clavicle is again noted . ___ fiducial markers are seen within the liver dome .
    OUTPUT:
    
Chronic interstitial abnormality within the lung bases . Otherwise no acute cardiopulmonary abnormality .