Table 1.

Clinical characteristics of patients (n = 20)

Parameters	Number of cases
Gender
Male	12 (60%)
Female	8 (40%)
Age
≦50	3 (15%)
>50–≦ 70	15 (75%)
>70	2 (10%)
Tumor size (cm)
≦4	11 (55%)
>4–≦ 7	7 (35%)
>7	2 (10%)
Tumor stage
pT1a	11 (55%)
pT1b	6 (30%)
pT2a	1 (5%)
pT2b	1 (5%)
pT3	1 (5%)
TNM stage
I	17 (85%)
II	2 (10%)
III	1 (5%)
IV	0 (0%)