Table 4. Lymph node metastasis rate and metastatic lymph node rate.
| Categories | T1 (number of patients) | T2 (number of patients) | T3 (number of patients) | T4 (number of patients) |
|---|---|---|---|---|
| Distant metastasis | 0 | 2 | 32 | 37 |
| Peritoneum | 0 | 1 | 24 | 32 |
| Liver | 0 | 0 | 3 | 9 |
| Other | 0 | 1 | 5 | 3 |
| Differentiation | T1 | T2*4 | T3 | T4*2 |
| High | 24 | 4 | 3 | 3 |
| Moderately | 20 | 21 | 509 | 21 |
| Poorly or none | 56 | 38 | 209 | 112 |
| Lymph node metastasis rate | 18/100*2,3,4 | 25/63*1,4 | 206/271*1 | 109/136*1,2 |
| Metastatic lymph node ratio | 54/2,493 (2.2)*3,4 | 98/1,529 (6.6)*3,4 | 1,874/7,021 (26.7)*1,2 | 1,156/3,069 (37.7)*1,2 |
| B-categories | T2*3,4 | T3*1,4 | T4*1,3 | |
| 1 | 1 | 10 | 6 | |
| 2 | 25 | 53 | 11 | |
| 3 | 35 | 181 | 94 | |
| 4 | 3 | 21 | 15 | |
| Pathological type | ||||
| 1 | 85 | 63 | 223 | 110 |
| 2 | 3 | 0 | 24 | 10 |
| 3 | 12 | 0 | 24 | 16 |
0, differences were not statistically significant; *, the difference was statistically significant. 1,2,3,4, the difference between the groups has statistical significance by Chi-square test.