Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate to severe cardiomegaly is re - demonstrated . Lung volumes are low . Mediastinal and hilar contours are similar with tortuosity of the thoracic aorta again noted . Small hiatal hernia is present . Pulmonary vasculature is not engorged . Patchy opacities in the lung bases likely reflect areas of atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . There are mild multilevel degenerative changes seen in the thoracic spine .
    OUTPUT:
    
Bibasilar patchy opacities , likely mild atelectasis .