Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tip of the newly placed OG tube is seen definitively only to the level of the diaphragm . The endotracheal tube is 3 .3 cm above the carina . No other significant changes since the radiograph from 4 hr earlier .
    OUTPUT:
    
The tip of the newly placed OG tube is not seen below the diaphragm . A repeat chest x-ray using the carina as the superior border , with abdominal technique , is recommended to definitively identify the OG tube tip .