Table 1.

The Detailed Characteristics of the 26 Patients

	Groups	n
Sex	Male	14
	Female	12
Age	≤ 60	10
	>60	16
TNM stage	I and II	6
	III and IV	20
Lymph node Metastasis	Negative	8
	Positive	18
Tumor size	≤ 3cm	18
	>3cm	8
History of smoking	ever	16
	Never	10