Relationship among LMR, the depth of tumor infiltration, tumor size, and the degree of tumor cell differentiation.
| Items | n | No. of cases with lymph nodes metastasis | LMR (%) | P | χ2 |
|---|---|---|---|---|---|
| Depth of tumor infiltration | 0.001 | 16.695 | |||
| T1 | 8 | 1 | 12.5 | ||
| T2 | 26 | 9 | 34.6 | ||
| T3 | 87 | 56 | 64.4 | ||
| T4 | 8 | 7 | 87.5 | ||
| Size of tumor (cm) | 0.007 | 9.995 | |||
| ≤ 3 | 29 | 9 | 31.0 | ||
| 3-5 | 68 | 38 | 55.9 | ||
| ≥ 5 | 32 | 26 | 81.3 | ||
| Degree of tumor cell differentiation | 0.005 | 10.545 | |||
| G1 | 32 | 11 | 34.4 | ||
| G2 | 60 | 35 | 58.3 | ||
| G3 | 37 | 27 | 73.0 |