Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable frontal chest radiograph demonstrates low lung volumes . Minimal bibasilar opacities likely from atelectasis . The pulmonary vasculature is normal . There is no effusion or pneumothorax . The heart size is normal . The mediastinal contours are noted for a tortuous aorta with a somewhat dilated appearance of the ascending aorta , which is stable when compared with ___ .
    OUTPUT:
    
1 . No acute chest pathology , with minimal bibasilar atelectasis . 2 . Stable appearance of a tortuous ascending aorta , which was previously mildly dilated at 3 .7 cm in ___ .