Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unchanged . Atherosclerotic calcifications are noted within the aortic arch . The pulmonary vasculature is not engorged . Patchy opacities are noted within the lung bases which could reflect areas of atelectasis , but infection is not excluded in the correct clinical setting . No pleural effusion or pneumothorax is present . Ossification of the anterior longitudinal ligament is re - demonstrated within the thoracic spine .
    OUTPUT:
    
Patchy opacities within the lung bases may reflect areas of atelectasis , but infection is not excluded in the correct clinical setting . No pulmonary edema .