| ESD-S (n = 8) | ESD-N (n = 8 | P value |
---|---|---|---|
Tumor location (n) | Â | Â | Â |
 Upper/middle/lower | 0/4/4 | 0/3/5 | 1.0 |
 Anterior wall/posterior wall/lesser curvature/greater curvature | 3/1/1/3 | 2/2/2/2 | 0.26 |
 Specimen size, mm (range) | 37.5 (28–53) | 33.5 (25–53) | 0.52 |
Median procedure time, min (range) | Â | Â | Â |
 Total | 18.0 (9–27) | 17.8 (7–31) | 0.75 |
 Mucosal incision | 12.0 (5.5–20) | 13.0 (4.5–17) | 0.79 |
 Submucosal dissection | 6.5 (1.5–10) | 4.8 (2.5–14) | 0.29 |
 Self-completion, n (%) | 8 (100%) | 7 (87.5%) | 0.12 |
 En-bloc resection, n (%) | 8 (100%) | 8 (100%) | 1.0 |
 Complication, n (%) | 0 (0%) | 0 (0%) | 1.0 |
 Perforation, n (%) | 0 (0%) | 0 (0%) | 1.0 |
 Muscularis layer injury, n (%) | 0 (0%) | 0 (0%) | 1.0 |