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We sought to investigate the clinical efficacy and safety of a novel endoscopic closure technique in repairing gastric wall defects after endoscopic full-thickness resection (EFTR) of gastric submucosal tumors (SMTs) originating from the muscularis propria layer. From December 2016 to December 2019, patients with gastric submucosal tumors were enrolled and clinicopathological data were collected. All SMTs were resected by EFTR and gastric wall defects were closed using a novel endoscopic closure technique. The feasibility, efficacy, and safety were evaluated. A total of 21 patients with gastric SMTs were included in this study. Among the included SMTs, 15 tumors were located in the fundus of the stomach, and 6 were located in the upper body of the stomach. The average size of the lesions was 2.3 cm (range: 1.9–2.5 cm). All patients underwent EFTR and the gastric wall defect was closed by endoscopic closure. The average endoscopic closure time was 9 min (range: 7–15 min) and the average hospitalization stay length was five days (range: 4–6 days). One patient developed abdominal pain on the first day after the procedure and their body temperature increased; he received treatments such as anti-infection, antacid, and gastrointestinal decompression and was cured and discharged after 4 days. No instance of delayed bleeding, postoperative gastrointestinal fistula, or abdominal infection occurred. No case was transferred to surgery. The postoperative pathology profile included 18 stromal tumors and 3 leiomyomas. During the follow-up period (6–24 months), no case of residual or recurrence was recorded. The described endoscopic loop ligation technique is feasible, effective, and safe for repairing gastric wall defects after EFTR for gastric submucosal tumors originating from the muscularis propria layer.

scandinavian journal of gastroenterology

The application of endoscopic loop ligation in defect repair following endoscopic full-thickness resection of gastric submucosal tumors originating from the muscularis propria layer