Journal of Neurogastroenterology and Motility : eISSN 2093-0887 / pISSN 2093-0879

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Fig. 1. Hill grade on endoscopy. Grade I: presence of a prominent fold of tissue closely approximated to the shaft of the endoscope. Grade II: the fold of tissue is less prominent and there are occasional periods of opening and rapid closing around the endoscope with respiration. Grade III: the fold is barely present, and the endoscope is not tightly gripped by the tissues. Grade IV: there is no fold, and the lumen of the esophagus is open, often allowing the squamous epithelium to be viewed from below. A hiatal hernia is always present.
J Neurogastroenterol Motil 2021;27:191~197
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