Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a nasogastric tube , which terminates just below the gastroesophageal junction , but the distal side hole port remains within the distal esophagus . There is no subdiaphragmatic free air . Numerous upper abdominal surgical clips are again noted . The appearance of the chest is otherwise unchanged compared to the prior study from 17 : 10 earlier today .
    OUTPUT:
    
The distal side hole port of a newly placed nasogastric tube is within the lower esophagus , and should be advanced approximately 5 cm to ensure gastric placement .