Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . The lungs are clear without consolidation , effusion or pneumothorax . The cardiomediastinal silhouette is stable . Old healed left lateral rib fractures are again noted . No acute displaced fractures identified . Compression deformities of the mid thoracic and upper lumbar vertebral bodies are unchanged .
    OUTPUT:
    
No definite acute cardiopulmonary process . No visualized displaced fracture identified . If desired dedicated rib series can be performed .