Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are fully expanded and clear . There is no diaphragmatic flattening or enlargement of the retro sternal clear space a suggest COPD . Apparent enlargement of the AP diameter is likely related to thoracic kyphosis . No pleural abnormalities . Heart size is normal . Cardiomediastinal and hilar silhouettes are normal .
    OUTPUT:
    
No significant cardiopulmonary abnormalities .