Abstract
To avoid the risk of iatrogenic dissemination during procedures, we have developed a combined laparoscopic and endoscopic surgery with a nonexposure technique for resection of gastric tumors. The study aim was to evaluate the feasibility and safety of non-exposed endoscopic wall-inversion surgery (NEWS) for gastric submucosal tumors (SMTs). Between August 2013 and February 2018, NEWS was performed for 42 patients with gastric SMTs ≤ 3cm in diameter at our institution. We retrospectively investigated the patients' backgrounds, operative and perioperative outcomes, tumor pathological characteristics, and follow-up data. All tumors were resected with negative margins by NEWS. The median operation time was 198min, and the median estimated blood loss was 5.0mL. Adverse events occurred in one patient with pneumonia. All patients were alive without recurrence within the median follow-up period of 29.2months. The average body weight loss rate was 0.3 ± 4.0%. No food residue was observed at endoscopic follow-up. On the basis of slight body weight loss and the absence of food residue observed in the postoperative endoscopy, NEWS appeared to be safe and feasible for gastric SMTs and to preserve function of the remnant stomach.
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