Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained demonstrating clear well expanded lungs without focal consolidation , effusion , or pneumothorax . There is slight flattening of the diaphragms which is suggestive of underlying COPD . Cardiomediastinal silhouette is normal . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
No acute intrathoracic process .