Table 4 Reasons of additional surgery after ESD
Variables | Total |
|---|---|
Number of tumors | 51 |
Piecemeal resection | 5(9.8%) |
Positive margin | 13(25.5%) |
Vertical | 11(21.6%) |
Circumferential | 2(3.9%) |
T1 cancer (≥1000 μm) | 34(66.7%) |
Poor differentiation | 2(3.9%) |
Lymphovascular infiltration | 5(9.8%) |