| Staining pattern |  | Staining pattern in diffuse type |  | ||
---|---|---|---|---|---|---|
Lymph node metastasis | Focal | Diffuse | P | High | Low | P |
Extent of metastasis | Â | Â | Â | Â | Â | Â |
   N1 | 3 | 17 | 0.021 | 5 | 12 | 0.025 |
   ≥ N2 | 9 | 9 |  | 8 | 1 |  |
Number of metastatic nodes | 12.4 ± 10.4 | 5.1 ± 5.4 | 0.0071 | 7.8 ± 6.4 | 2.5 ± 1.8 | 0.0078 |