Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax . Bibasilar atelectasis is present . The pulmonary vasculature is within normal limits .
    OUTPUT:
    
Bibasilar atelectasis . Infection can not be excluded in the correct clinical setting .