Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There are small bilateral pleural effusions which appear mildly increased compared to the prior study . Bibasilar opacities may be due to combination of pleural effusions and atelectasis , although underlying consolidation is not entirely excluded , although it is felt less likely . The cardiac and mediastinal silhouettes are grossly stable given differences in bibasilar opacities . No overt pulmonary edema .
    OUTPUT:
    
Bilateral pleural effusions which appear increased compared to ___ .