Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single supine chest radiograph is provided . Lung volumes are low . An ET tube terminates approximately 3 .9 cm from the carina . NG tube courses below the diaphragm . There is no focal consolidation , pleural effusion , or pneumothorax . Cardiomediastinal silhouette is unremarkable . Osseous structures are intact .
    OUTPUT:
    
Low lung volumes . ET tube and NG tube are appropriately positioned .