Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior study , lung volumes remain severely decreased causing bronchovascular crowding . Bibasilar atelectasis is mild . There is no focal consolidation , pleural effusion , or pneumothorax . The cardiomediastinal silhouette is unchanged since the prior study . A calcified aortic arch is also stable in appearance .
    OUTPUT:
    
Low lung volumes cause bronchovascular crowding . No focal consolidation concerning for pneumonia .