Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the prior study the lung volumes are much lower and new bibasilar opacities probably represent atelectasis ; superimposed consolidation can not be excluded . Small pleural effusions are possible .
    OUTPUT:
    
Low lung volumes and bibasilar atelectasis , left more than right . Superimposed consolidation would be difficult to exclude .