Table 3 Univariate analysis of clinicopathological factors predictive of lymph node metastasis
Variable | n | LN metastasis (-) n = 15 | LN metastasis (+) n = 25 | p value | |||
|---|---|---|---|---|---|---|---|
Agea | < 60 | 25 | 9 | (36.0%) | 16 | (64.0%) | 0.724 |
≧ 60 | 15 | 6 | (40.0%) | 9 | (60.0%) | ||
Gendera | Male | 35 | 15 | (42.9%) | 20 | (57.1%) | 0.081 |
Female | 5 | 0 | (0.0%) | 5 | (100.0%) | ||
T classificationb | 1 | 2 | 1 | (50.0%) | 1 | (50.0%) | 0.036* |
2 | 10 | 7 | (70.0%) | 3 | (30.0%) | ||
3 | 22 | 4 | (18.2%) | 18 | (81.8%) | ||
4 | 6 | 3 | (50.0%) | 3 | (50.0%) | ||
Histological gradeb | I | 21 | 7 | (33.3%) | 14 | (66.7%) | 0.551 |
II | 12 | 6 | (50.0%) | 6 | (50.0%) | ||
III | 7 | 2 | (28.6%) | 5 | (71.4%) | ||
Vascular invasiona | Negative | 32 | 13 | (40.6%) | 19 | (59.4%) | 0.350 |
Positive | 8 | 2 | (25.0%) | 6 | (75.0%) | ||
Lymphatic invasiona | Negative | 22 | 11 | (50.0%) | 11 | (50.0%) | 0.069 |
Positive | 18 | 4 | (22.2%) | 14 | (77.8%) | ||
Perineural invasiona | Negative | 30 | 13 | (43.3%) | 17 | (56.7%) | 0.174 |
Positive | 10 | 2 | (20.0%) | 8 | (80.0%) | ||