Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are hyperinflated with biapical hyperlucency , flattening of the diaphragm , add widening of the retrosternal clear space . Heart size is top normal . The aorta is tortuous and unfolded . There are no pleural effusions or pneumothorax . Moderate S - shaped scoliosis is present .
    OUTPUT:
    
Chronic obstructive airways disease .