Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are mildly hyperinflated , with biapical hyperlucency , increase in anteroposterior diameter , and widening of the retrosternal clear space . Cardiomediastinal and hilar contours are normal . No focal consolidation is present . There are no pleural effusions , pneumothorax , or pneumomediastinum .
    OUTPUT:
    
No acute cardiopulmonary process .