Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Extremely low lung volumes are noted . Linear bibasilar opacities are most likely due to atelectasis . There is no pulmonary edema or large effusion . The cardiomediastinal silhouette is within normal limits . Tracheostomy tube is in place .
    OUTPUT:
    
Low lung volumes with atelectasis . No obvious consolidation to suggest pneumonia .