Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable AP semi-upright view of the chest was obtained . Endotracheal tube projects approximately 5 cm above the carina . NG tube is not visualized . Lung volumes are low . Heart is top normal in size , and cardiomediastinal contours are unremarkable . Lungs are clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Appropriately positioned endotracheal tube . 2 . Low lung volumes .