Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are unremarkable . Streaky patchy opacities in both lower lobes may reflect atelectasis . Infection however is not excluded . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Bibasilar streaky airspace opacities which may reflect atelectasis or infection .