Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated , with flattening of the diaphragms , consistent with chronic obstructive pulmonary disease . There are bibasilar opacities which may be due to atelectasis and scarring , however , underlying infectious process or aspiration not excluded in the appropriate clinical setting . No large pleural effusion is seen although trace pleural effusions would be difficult to exclude . There is no evidence of pneumothorax . The cardiac silhouette is top - normal . The aorta is slightly tortuous .
    OUTPUT:
    
1 . COPD . 2 . Bibasilar opacities may reflect atelectasis and / or scarring , however , underlying infection or aspiration not excluded in the appropriate clinical setting .