Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior chest radiograph from ___ , there has been overall interval improvement of the pre-existing parenchymal opacities , with areas of residual opacity noted at the perihilar regions bilaterally . No definite new focal consolidation identified . The cardiomediastinal and hilar contours are stable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Overall interval improvement of the pre-existing parenchymal opacities , with areas of residual opacity noted at the perihilar regions bilaterally . No definite new focal consolidation identified .