Table 2.
Comparison of clinicopathological data between patients with and those without lymph node metastasis.
| Patients with lymph node metastasis | Patients without lymph node metastasis | Statistical analysis | |
|---|---|---|---|
| Number of patients | 25 | 205 | |
| Age (years), range | 16–74 (median, 50.0) | 15–84 (median, 54.0) | No significant difference was found (Mann–Whitney U test, P = 0.105) |
| Tumor size (mm), range | 10–90 (median, 30.0) | 5.5–100 (median, 20.0) | Significant difference was found (Mann–Whitney U test, P = 0.009) |
| Sex (male : female) |
13 : 12 | 125 : 78 (2 not reported) | No significant difference was found (χ 2 test, P = 0.390) |
A significant difference was found for the tumor size between patients with and those without lymph node metastasis (Mann–Whitney U test, P = 0.009). This fact means that the size of tumor lesions was significantly larger in patients with lymph node metastasis than in those without lymph node metastasis.