Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volume is low . Bibasilar opacities are increased compared to prior , concerning for worsening pneumonia . There is no pulmonary edema . Cardiomediastinal silhouette is normal size .
    OUTPUT:
    
Bibasilar opacities are increased compared to ___ , concerning for worsening pneumonia .