Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The cardiac , mediastinal and hilar contours are unchanged , with the heart size within normal limits . The aortic knob is calcified . There is no pulmonary edema . Crowding of the bronchovascular structures is noted with streaky bibasilar opacities most likely reflective of atelectasis . Infection however is not completely excluded . There is no large pleural effusion or pneumothorax . Multiple right axillary clips are again demonstrated .
    OUTPUT:
    
Streaky bibasilar airspace opacities in this setting of low lung volumes could reflect atelectasis but infection can not be completely excluded .