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Endoscopic submucosal dissection with sentinel node navigation. (A) Marking for endoscopic submucosal dissection is performed around the tumor; (B) indocyanine green is injected into the submucosal layer around the tumor for sentinel node navigation; (C) sentinel node harvest is performed by laparoscopic pick-up biopsy; (D) endoscopic submucosal dissection is performed.
