Endoscopic Mucosal Resection Performed Underwater for Nonampullary Duodenal Epithelial Tumor: Evaluation of Feasibility and Safety

Figure 3

(a) Slightly warm distilled water was injected into the duodenal lumen from the accessory channel, and the tumor was completely submerged. (b) The lesion was slightly bulging from the mucosal surface a few minutes after warm water injection, and the boundary between the tumor and the normal mucosal surface became morphologically clear.

(a)

(b)