RESUMO
OBJECTIVE: To compare early (resection quality, complication rate, surgery time) and long-term (recurrence rate) outcomes of endoscopic submucosal dissection versus endoscopic mucosal resection. MATERIAL AND METHODS: A systematic review and meta-analysis was performed in accordance with the PRISMA guidelines. Data were analyzed using the Rewiew Manager 5.3 software. RESULTS: The study included 8 manuscripts including 6 retrospective trials, 1 case-control and only 1 prospective study. These studies comprised the results of endoscopic resection of 1989 colonic tumors (EMR - 748, ESD - 1241). ESD is associated with higher incidence of en-bloc resection (OR 0.13; 95% CI 0.03 0.49; p=0.003) and R0 resection (OR 0.23; 95% CI 0.05 1.02; p=0.05) compared to EMR. Local recurrence rate is 13 times higher after EMR compared to ESD (OR 13.94; 95% CI 6.3 30.8; p=0.00001). However, ESD is followed by 4 times higher risk of colon wall perforation (OR 0.25; 95% CI 0.08 0.81; p=0.02). CONCLUSION: ESD is more advisable regarding resection quality compared to EMR. However, higher incidence of perforations, surgery time and technical features of ESD do not allow us to unambiguously interpret the results of our meta-analysis and determine the optimal surgical approach.
