Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Redemonstrated is elevation of the right hemidiaphragm with adjacent pleural thickening and several surgical clips , which appear unchanged from the prior examination . Lung volumes are low , and bibasilar atelectasis is noted . The upper lungs are grossly clear without lobar consolidation , pleural effusion , or pneumothorax . The cardiomediastinal silhouette is unchanged in appearance . Right shoulder arthroplasty is incompletely imaged on today 's examination .
    OUTPUT:
    
Low lung volumes and bibasilar atelectasis . No acute cardiopulmonary process .