Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is continued mild elevation of the left hemidiaphragm , with adjacent compressive atelectasis . Right lung is hyperexpanded and clear . There is biapical hyperlucency and attenuation of peripheral vascular structures . Heart size is top normal . The aorta is tortuous and unfolded . There are no pleural effusions or pneumothorax . Apparent left shoulder asymmetry is positional , resolving on subsequent shoulder radiographs .
    OUTPUT:
    
1 . Continued left diaphragmatic elevation / atelectasis . 2 . Chronic obstructive airways disease .