Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is mildly enlarged . Mediastinal and hilar contours are unremarkable . Crowding of the bronchovascular structures is present without overt pulmonary edema . Patchy bibasilar airspace opacities may reflect areas of atelectasis , but infection can not be completely excluded . No pleural effusion or pneumothorax is present . Several clips are noted the region . No acute osseous is detected .
    OUTPUT:
    
Low lung volumes . Patchy bibasilar airspace opacities may reflect atelectasis but infection can not be completely excluded in correct setting .