Table 4.
Clinical outcomes among patients with gastric cancers who underwent endoscopic submucosal dissection
| Outcomes | Studies, n | Tumor, n | Rate (95%CI)1 |
| Efficacy measures | |||
| R0 resection | 24 | 8520 | 87 (84-90) |
| Endoscopic en bloc resection | 29 | 9652 | 94 (91-96) |
| Curative resection | 10 | 5234 | 83 (80-86) |
| Safety measures | |||
| Immediate perforation2 | 31 | 12076 | 3.1 (2.4-3.9) |
| Immediate major bleeding2 | 6 | 303 | 2.9 (0.24-27) |
| Delayed perforation3 | 6 | 1486 | 0.15 (0.01-3.8) |
| Delayed bleeding3 | 29 | 11925 | 3.8 (3.0-4.7) |
| Recurrence (if R0)4 | 8 | 724 | 0.14 (0.004-4.6) |
| Recurrence (if not R0)4 | 7 | 152 | 8.5 (3.6-19) |
| Recurrence (irrespective of R0 status)4 | 18 | 7681 | 0.77 (0.39-1.5) |
1
The rates are calculated as a percentage of the total number of tumors operated;
2
Immediate refers to adverse outcomes occurring within 24 h of the procedure;
3
Delayed refers to adverse outcome occurring 24 h after the procedure;
4
Average follow-up was about 26, 24 and 37 mo for assessment of recurrence among tumors with R0, without R0, and irrespective of R0 status respectively. R0: Histologically-confirmed en bloc resection.