Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Calcified left hilar lymph node and calcified nodule in the left mid lung field are unchanged , compatible with prior granulomatous disease . Aortic knob calcifications are present . The mediastinal and hilar contours are otherwise unremarkable . Pulmonary vasculature is not engorged . Right basilar and left lateral pleural calcifications are present suggestive of prior asbestos exposure . No focal consolidation , pleural effusion or pneumothorax is seen . Patchy opacities in the lung bases likely reflect atelectasis . There are mild degenerative changes in the thoracic spine .
    OUTPUT:
    
Mild atelectasis at the lung bases . No focal consolidation to suggest pneumonia .