Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are unchanged compared to the prior study . The trachea is central . The cardiomediastinal contour is normal . A dual lead pacemaker is unchanged in appearance . There are persistent bilateral pleural effusions . Bibasilar atelectasis is unchanged , can not exclude superimposed infection . No pneumothorax seen . Degenerative changes in the right shoulder .
    OUTPUT:
    
No significant interval change when compared to the prior study .