Table 1.

Clinical Features

Patient Clinical Characteristics, Age=64.95 (n=74)
Gender	Male	56(75.6%)
	Female	18(24.3%)
Age	≤60	20(27.0%)
	>60	54(73.0%)
Smoking status	Yes	43(58.1%)
	No	31(41.9%)
Pathology grade	Stage I/II	53(71.6%)
	Stage III	21(28.4%)
T classification	T1/T2	55(74.3%)
	T3/T4	19(25.7%)
Lymph node	N0	64(86.5%)
	N1/N2	10(13.5%)
Metastasis	M0	74(100%)