Clinical Outcomes of Patients with Small Rectal Neuroendocrine Tumors Treated Using Endoscopic Submucosal Resection with a Ligation Device
2019
BACKGROUND/AIMS: The therapeutic strategies for small rectal neuroendocrine tumors (NETs) have not been standardized. We examined the efficacy and safety of endoscopic submucosal resection with a ligation device (ESMR-L) and the long-term outcomes after endoscopic treatment. METHODS: A total of 181 patients with rectal NETs 5 mm (OR 2.06; 95% CI 1.04-4.08, p = 0.04) was a significant independent predictor of the presence of lymphovascular invasion. Of the 67 patients with non-curative resections, 11 patients underwent additional surgery; lymph node metastasis was confirmed in 2 cases (18.2%). No local or distant metastases were observed during the follow-up period in 77 patients with a curative resection, 9 patients who received additional surgery, and 50 patients with non-curative resections. CONCLUSION: ESMR-L is an easy, safe and effective treatment for rectal NETs <10 mm in diameter, and the prognosis of patients seems to be good, despite a relatively high rate of lymphovascular invasion.
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