Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided IJ catheter terminates at the upper atrium . A new nasogastric tube with extends to the level of the diaphragm , and appears to be either within a patulous esophagus or small hiatal hernia . The lung volumes are low . The hilar mediastinal contours remain unchanged . A normal bowel gas pattern is demonstrated .
    OUTPUT:
    
NG tube terminating near the gastroesophageal junction , possibly within a patulous esophagus or small hiatal hernia .