Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to immediate prior study , there has been improvement of global nodular opacities now mostly present in the bilateral lower lung regions . There is no pleural effusion or pneumothorax . Cardiomediastinal silhouette and hilar contours are stable .
    OUTPUT:
    
Interval improvement of global nodular opacities which may represent improving aspiration , atypical infection or edema .