Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Linear opacities are re- demonstrated within the mid lung fields bilaterally , with slight interval improvement in previously noted patchy opacities in the left upper and lower lung fields . More focal opacity is noted within the right upper lobe , which appears more conspicuous than on the previous radiograph . No new focal consolidation , pleural effusion or pneumothorax is present . Pulmonary vasculature is normal . Moderate multilevel degenerative changes are again seen .
    OUTPUT:
    
1 . More conspicuous focal opacity within the right upper lobe which has been present since ___ . As suggested on the prior chest radiograph , CT is recommended for further assessment . 2 . Interval improvement in previously noted patchy opacities in the left upper and lower lung fields .