Traction-preclosure-assisted vs conventional endoscopic full-thickness resection for gastric subepithelial tumors: Safety, efficacy in a retrospective cohort (with video)

Figure 1 Conventional endoscopic full-thickness resection technology. A: Subepithelial tumor located on the greater curvature of the lower stomach; B and C: Tumor exposure achieved with a transparent cap to delineate the interface between the lesion and surrounding tissue, followed by resection, leaving a large gastric wall defect; D and E: Defect closed using purse-string suture with clips and an endoloop ligation device; F: Resected specimen showing en bloc removal. 1: Indicates the tumor.