Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . Lower lung volume is seen on the frontal exam with secondary crowding of the bronchovascular markings . The lungs are clear of focal consolidation or effusion . The cardiomediastinal silhouette is unchanged . Hypertrophic changes are noted in the spine . Left vagal nerve stimulator device is again seen .
    OUTPUT:
    
No acute cardiopulmonary process .