Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior radiograph , there is improved aeration of the right lung base , without concerning consolidation or opacity . No new opacities , focal consolidation , or pleural effusion identified . Cardiomediastinal silhouette is normal .
    OUTPUT:
    
Improved aeration of the right lung base , without the previously described opacity . No new focal consolidation identified .