Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . Relatively low lung volumes are noted . The lungs are clear . Cardiomediastinal silhouette is within normal limits . Hypertrophic changes are noted in the spine . Mild height loss in the upper lumbar spine vertebral bodies better seen on lumbar spine films . No displaced rib fractures identified .
    OUTPUT:
    
No definite acute cardiopulmonary process .