Characteristic | Number | Percent |
---|---|---|
Method of ER | ||
EMR | 1 | 1.6 |
ESD | 62 | 98.4 |
Type of resection | ||
En bloc | 62 | 98.4 |
Unknown | 1 | 1.6 |
Pathological tumor depth | ||
SM1 | 13 | 20.6 |
SM2 | 50 | 79.4 |
Tumor differentiation grade | ||
Unknown | 20 | 31.7 |
G1 | 3 | 4.8 |
G2 | 34 | 54.0 |
G3 | 6 | 9.5 |
G4 | 0 | 0.0 |
Lymphatic invasion | ||
Positive | 20 | 31.7 |
Negative | 38 | 60.3 |
Unknown | 5 | 7.9 |
Venous invasion | ||
Positive | 14 | 22.2 |
Negative | 45 | 71.4 |
Unknown | 4 | 6.3 |
Horizontal margin | ||
Positive | 6 | 9.5 |
Negative or uncertain | 57 | 90.5 |
Vertical margin | ||
Positive | 1 | 1.6 |
Negative or uncertain | 62 | 98.4 |