Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate to severe enlargement of the cardiac silhouette is unchanged . The aorta remains tortuous . The mediastinal and hilar contours are similar . Pulmonary vasculature is not engorged . Patchy opacities are again noted in the lung bases . No focal consolidation , pleural effusion or pneumothorax is present . Remote right - sided rib fractures are re - demonstrated .
    OUTPUT:
    
Mild bibasilar patchy opacities , likely atelectasis , but infection is not completely excluded in the correct clinical setting .