Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . The mediastinal contours are unchanged with slight tortuosity of the thoracic aorta again noted . The pulmonary vasculature is normal . Chain sutures in the right at apex compatible prior wedge resection are noted . There are mild emphysematous changes noted . Streaky bibasilar opacities likely reflect atelectasis . No focal consolidation is noted . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild bibasilar atelectasis . Mild emphysema .