Table 9 Relation between tumor location and the sites of lateral lymph node metastasis
Tumor location | The site of lateral lymph node metastasis | χ 2 | P value | |||
|---|---|---|---|---|---|---|
Level II | Level III | Level IV | Level V | |||
| Â | Â | Â | Â | Â | 9.621 | 0.649 |
Upper 1/3 of the lobe (n = 57 cases) | 34 | 38 | 36 | 15 |  |  |
Middle 1/3 of the lobe (n = 20 cases) | 5 | 10 | 18 | 5 |  |  |
Lower 1/3 of the lobe (n = 29 cases) | 8 | 16 | 19 | 5 |  |  |
Isthmus (n = 13 cases) | 3 | 8 | 10 | 2 |  |  |
Whole (n = 11 cases) | 4 | 7 | 10 | 2 |  |  |