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. 2024 Oct 25;56(Suppl 1):E937–E938. doi: 10.1055/a-2436-1482

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The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/).

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 2 — a Endoscopic submucosal dissection exposed the muscularis layer, but the foreign body was not visible. b, c Following careful incision under ultrasound guidance, the foreign body was successfully retrieved.