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. 2022 May 13;55(1):97–99. doi: 10.1055/a-1838-4311

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The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License, which permits unrestricted reproduction and distribution, for non-commercial purposes only; and use and reproduction, but not distribution, of adapted material for non-commercial purposes only, provided the original work is properly cited.

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Fig. 3 — Sequential pictures of the underwater endoscopic mucosal resection of the tumor showing: a the tip of the snare (15-mm Rota snare; Medi-Globe GmbH, Achenmühle, Germany) securely placed on the normal mucosa beyond the tumor with a sufficient proximal margin; b the snare being gradually closed, while confirming it was capturing the entire tumor with its surrounding normal mucosa and aspirating the water, with the completely captured tumor then cut with pure cut mode diathermy (ESG-100; Olympus); c no residual lesions around the mucosal defect, meaning endoscopic en bloc resection had been achieved, and the mucosal defect was closed with a reopenable clip (Sureclip Plus; Micro-Tech Co. Ltd., NanJing, China) and endoclips (EZ-clip; Olympus); d the resected specimen.