Safety and efficacy of over-the-scope clip-assisted full thickness resection of duodenal subepithelial tumors: A case report

Figure 1 Pathology of duodenal mass. A: Well differentiated neuroendocrine tumor, hematoxylin and eosin (HE) stain, 25 ×; B: The tumor cells are immunoreactive for synaptophysin (immunohistochemical stain, 25 ×); C: Well differentiated neuroendocrine tumor with negative deep margin (R0, HE stain, 25 ×); D: Well differentiated neuroendocrine tumor (HE, 100 ×).

Figure 2 Endoscopic view of duodenal lesion. A: Duodenal nodule prior to intervention; B: Pseudopolyp lesion after deployment of over the scope clip; C: Arterial spurting of blood from the lesion during resection; D: Post-resection defect; E: En bloc resected specimen; F: Follow up upper endoscopy revealing over the scope (OVESCO^®) clip, scar and granulation tissue.