Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior radiograph , lungs are persistently hyperinflated without focal consolidation . No pneumothorax or pleural effusions . The cardiomediastinal silhouettes are normal . Diffuse demineralization .
    OUTPUT:
    
No acute cardiopulmonary process . Persistently hyperinflated lungs compatible with emphysema .