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Endoscopic submucosal dissection outcomes
| Result of resection | n (%) |
| Complete resection | 877 (87.7) |
| En bloc resection | 953 (95.3) |
| Free margin of en bloc resection | 901 (90.1) |
| Failure of en bloc resection | 6 (0.6) |
| ESD time (min), mean ± SD | 47.8 ± 38.3 |
| Submucosal invasion of tumor | 74 (7.4) |
| Lymphovascular invasion of tumor | 30 (3.0) |
ESD: Endoscopic submucosal dissection.
