Figure 1.

The cap-assisted endoscopic mucosal resection method of superficial non-ampullary duodenal epithelial tumor. This is the “suck and shake” technique. Type 0-IIc lesion, 10 mm × 5 mm, mucosal carcinoma, cut-end negative. A: Indigo carmine spraying view. Depressed-type lesion was located in the second portion of the duodenum; B: Injecting the glycerol into submucosal layer; C: Sucking the lesion; D: Shaking the lesion to prevent muscle layer involvement; E: Ulcer findings just after lesion removal. The lesion was resected en bloc, and there was no bleeding or perforation in the ulcer just after the procedure; F: Closing the ulcer floor completely by clip to prevent delayed bleeding and perforation.