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Case Report
Copyright: ©Author(s) 2026.
World J Gastrointest Endosc. Sep 16, 2026; 18(9): 124149
Published online Sep 16, 2026. doi: 10.4253/wjge.124149
Figure 1
Figure 1 Endoscopy images during endoscopic submucosal dissection. A: After spraying indigo rouge, the stain on the lesion is obvious and the edge of the lesion is clear; B: Intraoperative marking showed that the lesion extended from the posterior wall and lesser curvature of the lower gastric body to the gastric angulus and gastric antrum; C and D: Under the traction and assistance of titanium clips, the submucosal lesion was completely removed by endoscopic submucosal dissection; E: Spraying tissue adhesive onto the surface of the resection defect to prevent postoperative bleeding; F: Complete resection of the lesion, about 60 mm × 100 mm in size.
Figure 2
Figure 2 Findings of histopathology examination of the endoscopically resected specimen. A and B: There were no lesions at the lateral and basal incisal margins of the lesion. High-grade intraepithelial neoplasia presented a multifocal and scattered distribution, some of which showed adenocarcinoma in situ-like changes without invading the stroma and muscularis mucosa. The surrounding mucosa presented low-grade intraepithelial neoplasia, showing intestinal metaplasia and atrophy.
Figure 3
Figure 3 Endoscopy images of the reexamination 4 months after endoscopic submucosal dissection. A-C: An endoscopic submucosal dissection scar in the gastric body and gastric angulus was observed by the gastroscopy four months after the operation, indicating a well-recovered resection defect without postoperative bleeding (arrows).


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