Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear with no evidence of consolidation , effusion , or pneumothorax . The lungs remain hyperinflated with flattening of the diaphragms , suggestive of underlying COPD . The cardiomediastinal silhouette is normal . The aorta appears mildly tortuous but stable .
    OUTPUT:
    
No acute cardiopulmonary process .