Table 1.

Clinical characteristic data of patients

Characteristic	Case (%)
Age (years)
≤51	10 (50.0)
>51	10 (50.0)
Gender
Male	11 (55.0)
Female	9 (45.0)
Clinical stage
III	11 (55.0)
IV	9 (45.0)
T stage
T1	0 (0)
T2	4 (20.0)
T3	10 (50.0)
T4	6 (30.0)
N stage
N0	1 (5.0)
N1	2 (10.0)
N2	14 (70.0)
N3	3 (15.0)