Endoscopic submucosal dissection for the treatment of neoplastic lesions in the gastrointestinal tract

Figure 2 Endoscopic submucosal dissection of gastric submucosal tumor. A, B: Submucosal tumor in the stomach; C: Endosonographic view of the tumor, which is not connected to the muscle layer of the gastric wall; D: An incision was made in the mucosa and submucosa after indigo carmine solution injection into the submucosal layer around the lesion; E-G: Submucosal dissection of the tumor, exposing the tumor in the submucosa and carefully cutting after injecting the solution; H: Resected tumor (GIST, 25 mm, MI 2/50 HPF). GIST: Gastrointestinal stromal tumor; MI: Mitotic index; HPF: High power field.