Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . There is no pleural effusion or pneumothorax . There is new mild bibasilar atelectasis . There is no focal consolidation concerning for pneumonia . Again demonstrated are circular opacities projecting over both lower lungs , possibly nipple shadows . Attention to these areas on follow up is recommended . There has been slight interval increased callus formation of the right fifth rib fracture and old healed right rib fractures .
    OUTPUT:
    
Minimal bibasilar atelectasis . Otherwise , no new acute cardiopulmonary abnormality .