Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable with diffuse calcification of the thoracic aorta again noted . The pulmonary vascularity is not engorged . Chain sutures are seen within the right lung base . There is minimal streaky opacity in the lung bases likely reflective of atelectasis . No focal consolidation , pleural effusion or pneumothorax is identified . Multilevel degenerative changes are seen within the thoracic spine . On the lateral view , dilated loops of small bowel are partially imaged .
    OUTPUT:
    
Mild bibasilar atelectasis .