Table 1.

Clinicopathological data

Parameter	Patients
Clinical stage
III	7
IV	3
T stage
T1-T2	4
T3-T4	6
N stage
N0	0
N+	10
M stage
M0	10
M+	0
Pathological grade
Low	0
Middle	4
High	6
Sex
Male	10
Female	0
Age
<=55	5
>55	5
Smoking
Yes	10
No	0