Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There relatively low lung volumes . Mild elevation the right hemidiaphragm is noted . Mild bibasilar opacities have decreased since the prior study and are likely related to atelectasis / scarring . No new focal consolidation is seen . There is no pleural effusion or pneumothorax . Cardiac and mediastinal silhouettes are stable . Multiple old right - sided rib fractures are again noted .
    OUTPUT:
    
Mild bibasilar opacities have decreased since the prior study and are likely related to atelectasis / scarring . No new focal consolidation .