Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated with flattening of the diaphragms , suggesting chronic obstructive pulmonary disease . There is slight blunting of the bilateral costophrenic angles , which may be due to pleural thickening although very trace pleural effusions are not excluded . Bibasilar atelectasis is seen , without definite focal consolidation . Relative lucency at the upper lungs likely relates to pulmonary emphysema . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
COPD and findings suggesting pulmonary emphysema . Slight blunting of the bilateral costophrenic angles may be due to pleural thickening , although trace effusions are not excluded . Bibasilar opacities most likely represent atelectasis ; however , an early infectious process is not excluded in the appropriate clinical setting .