Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The NG tube is in the mid esophagus , too high , recommend advancement . The ET tube , left subclavian line , and mildly elevated right hemidiaphragm are unchanged . There continues to be pulmonary vascular redistribution , but overall the parenchymal opacities are improved .
    OUTPUT:
    
NG tube in mid esophagus .