Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A nasogastric tube in terminates in the stomach . The lung volumes are low . The cardiac , mediastinal and hilar contours appear stable . There has been improvement in left perihilar opacification . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Nasogastric tube terminating in the stomach . Reduced left perihilar opacification .