Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of the cardiac silhouette is re - demonstrated . Mediastinal and hilar contours are unchanged . Pulmonary vasculature is not engorged . Lung volumes are low with mild bibasilar atelectasis . No focal consolidation , pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Low lung volumes . Otherwise no acute cardiopulmonary abnormality .