Table 3

Comparison of clinicopathological findings between patients with and without lymph node metastasis.

Patients with lymph node metastasis

Patients without lymph node metastasis

Statistical analysis


Number of patients

12

161

Age (years)

17 to 67 (mean: 43.5)

15 to 84 (mean: 53.4)

Significant difference was found

(Mann-Whitney U test: p = 0.01)

Maximum diameter of the tumor (mm)

5.5 to 65 (mean: 29.8)

10 to 100 (mean: 23.5)

No significant difference was found

(Mann-Whitney U test: p = 0.10)

Gender (male to female)

6:6

96:63 (2 not reported)

No significant difference was found

(Chi-square test: p = 0.55)


A significant difference was found for the ages of patients with and without lymph node metastasis (Mann-Whitney U test: p = 0.01), and patients with lymph node metastasis were significantly younger than those without lymph node metastasis. In contrast, no significant differences were found for maximum diameter of the tumor or gender in patients with and without lymph node metastasis (Mann-Whitney U test: p = 0.10 or Chi-square test: p = 0.55, respectively).

Okubo et al. BMC Cancer 2011 11:187   doi:10.1186/1471-2407-11-187

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