Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate enlargement of the cardiac silhouette is relatively unchanged . Mediastinal and hilar contours are similar . Pulmonary vasculature is not engorged . Minimal atelectasis is seen in the lung bases without focal consolidation . No pleural effusion or pneumothorax is demonstrated . Ossification of the anterior longitudinal ligament is re - demonstrated .
    OUTPUT:
    
Minimal bibasilar atelectasis but no radiographic evidence for pneumonia or pulmonary edema .