Table 1.

Baseline data of the 19 patients

	Values
Age (years)	56.3 ± 10.7 (27–76)
Gender (male/female)	10/9
Smoking history	2
Tumor history	2
Tumor marker
Neuron-specific enolase (ng/L)	12.1 ± 2.0 (8.8–15.9)
Carcinoembryonic antigen (ug/ml)	1.7 ± 0.8 (0.3–3.6)
Squamous cell carcinoma antigen (ug/L)	1.1 ± 0.5 (0.5–2.3)
sCyfra21–1 (ng/ml)	1.9 ± 0.7 (1.0–3.4)