Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are hazy opacities in the bilateral lung bases , more pronounced since prior radiograph , concerning for infection / aspiration . The cardiomediastinal silhouette and hilar contours are stable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Slightly increased prominence of bibasilar hazy opacities concerning for infection / aspiration .