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The relationship between the present categorization, the number of metastatic nodes and the number of involved stations
| Number of involved pN2 station |
P-value | Number of metastatic nodes |
P-value | |||
|---|---|---|---|---|---|---|
| Single station pN2 | Multiple stations pN2 | <4 | ≥4 | |||
| pN2a-1 | 22 | 10 | <0.01 | 19 | 13 | <0.01 |
| pN2a-2 | 3 | 11 | 1 | 13 | ||
