Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Rotated positioning , with low inspiratory volumes . Allowing for this , the cardiomediastinal silhouette is probably unchanged . Again seen is bibasilar atelectasis . , similar to the prior study . No definite pneumonic consolidation . No gross effusion . No CHF . No pneumothorax detected .
    OUTPUT:
    
Bibasilar are atelectasis in the setting of low lung volumes . No definite pneumonic infiltrate .