Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are fully expanded and clear . No pleural abnormalities . Heart size is normal . Cardiomediastinal and hilar silhouettes are normal . Median sternotomy wires and mediastinal clips are noted . MILD COMPRESSION OF A LOWER THORACIC VERTEBRAL BODY IS UNCHANGED .
    OUTPUT:
    
No acute cardiopulmonary abnormality .