Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube is in standard positioning , terminating approximately 4 cm from the carina . An enteric tube tip terminates in the distal esophagus , with side port in the mid esophagus and should be advanced by at least 15 cm for appropriate positioning . Remainder of the examination is unchanged . No pneumothorax is identified . Retained barium is again demonstrated within the colon .
    OUTPUT:
    
1 . Endotracheal tube in standard position . 2 . Suboptimal positioning of the enteric tube with tip in the distal esophagus and side port in the mid esophagus . This tube should be advanced by at least 15 cm for appropriate positioning .