Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval improvement in lung volumes with resultant apparent decrease in size of the cardiomediastinal silhouette . Additionally there is improvement in bibasilar atelectasis . No pneumothorax or effusion is present . Trach and left hemodialysis catheter are in stable position .
    OUTPUT:
    
Interval improvement in lung volumes , with decreased bibasilar atelectasis .