Abstract
Background
Complete closure of gastric wall defects is critical following endoscopic full-thickness resection (EFTR). The aim of this study was to evaluate the efficacy, safety, and clinical outcome of a new endoscopic method: closing while dissecting.
Methods
Twenty-seven patients who underwent EFTR were retrospectively analyzed between January 2020 and March 2021. Gastric defects resulting from EFTR were closed using the “interrupted-close during dissection” technique with endoclips. Tumor characteristics, en bloc resection rates, and postoperative adverse events were evaluated.
Results
All submucosal tumors were successfully resected and complete resection was histologically confirmed. The mean maximal tumor diameter was 1.3 cm (ranging from 0.8 to 3.0 cm). The majority of these tumors were gastrointestinal stromal tumors (n = 20), Leiomyoma (n = 3), schwannomas (n = 2), others included fibroma (n = 1) and neurogenic tumor (n = 1). There were no cases of hemorrhage, peritonitis, or delayed perforation. Four patients complained of slight abdominal pain, but no hyperpyrexia or serious elevated white blood cell count was detected in the first 24 h after treatment. All wounds were healed on follow-up endoscopy 3 months after the procedure. The mean follow-up duration was 8.5 months (ranging from 3 to 17) and no tumor recurrences were observed.
Conclusions
The feasibility and safety of this interrupted-close during dissection approach allows for clinical applications in EFTR of gastric submucosal tumors.



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Haibo Sun, Tingting Cao, Fan Zhang, Ke Tao and Hong Xu have no conflicts of interest or financial ties to disclose.
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Sun, H., Cao, T., Zhang, F. et al. Gastric defect closure after endoscopic full-thickness resection: the closing while dissecting technique. Surg Endosc 37, 234–240 (2023). https://doi.org/10.1007/s00464-022-09457-7
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DOI: https://doi.org/10.1007/s00464-022-09457-7