Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unchanged with atherosclerotic calcifications seen in the aortic knob . Pulmonary vasculature is not engorged . Patchy opacity within the right lower lobe corresponds to the previously noted focal opacity visualized on prior CT and appears grossly unchanged from the prior radiograph . No new focal consolidation , pleural effusion or pneumothorax is identified . No acute osseous abnormality is visualized .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Chronic focal opacity within the right lower lobe , previously seen on prior CT , and unchanged from the previous radiograph .