Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear with no evidence of consolidation , effusion , or pneumothorax . Cardiomediastinal silhouette is normal . No displaced rib fractures are seen . Mild degenerative changes in the thoracic spine are present .
    OUTPUT:
    
No acute cardiopulmonary process . If clinical concern for rib injury is high , a dedicated rib series is recommended .