Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Again seen is mild hyperexpansion of the lung consistent with obstructive lung disease . The lungs are overall clear and there is no evidence of pneumonia . There is stable mild tortuosity of the aorta . Cardiac , mediastinal and hilar contours are stable . No pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary process .