Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate hyperinflation with blunting of the diaphragms and increase of the retrosternal clear space , consistent with chronic lung disease . Otherwise , the lungs are clear . The cardiac and mediastinal contours are normal . No pleural abnormality is seen .
    OUTPUT:
    
No acute cardiopulmonary process .