Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The lungs are clear without consolidation , effusion , or pneumothorax . Cardiomediastinal silhouette is within normal limits . Moderate to large hiatal hernia is again noted . Mid to lower thoracic compression deformities are similar compared to ___ .
    OUTPUT:
    
No acute cardiopulmonary process .