Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single frontal radiograph demonstrates an endotracheal tube appropriately positioned approximately 4 cm above the carina . Lung volumes are low and there is minimal pulmonary vascular engorgement . A nasogastric tube terminates within the stomach . The lungs are clear . There is no pneumothorax or pleural effusion . Cardiomediastinal contours are normal .
    OUTPUT:
    
1 . Appropriately positioned endotracheal tube . 2 . Pulmonary vascular congestion .