Gel Immersion Endoscopic Mucosal Resection (EMR) for Superficial Nonampullary Duodenal Epithelial Tumors May Reduce Procedure Time Compared with Underwater EMR (with Video)

Figure 3

(a) SNADETs in the superior duodenal angle. (b) Air and bile cause poor visibility in underwater. (c) The viscoelasticity of the gel allows it to stay in the lumen and easily remove air bubbles and intestinal fluids without mixing, resulting in a good field of view. (d) The SNADETs resected en bloc resection without any adverse events.

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