Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild to moderate enlargement of the cardiac silhouette is present . The aorta is mildly unfolded . The mediastinal and hilar contours otherwise are unremarkable . No pulmonary edema is seen . Minimal streaky bibasilar airspace opacities likely reflect atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . No acute osseous abnormalities are visualized .
    OUTPUT:
    
Mild bibasilar atelectasis .