Efficacy of thoracoscopic anatomical segmentectomy for small pulmonary nodules

Table 2 Comparison of serum tumor markers in patients with malignant lesions (mean ± SD)

Group	No. of malignant cases	CA125 (U/mL)	CA19-9 (U/mL)	SCC (ng/mL)	NSE (ng/mL)
Reference	37	23.25 ± 3.51	13.52 ± 2.25	1.31 ± 0.22	12.32 ± 2.63
Observation	35	21.85 ± 3.25	12.74 ± 2.36	1.27 ± 0.24	11.56 ± 2.31
t	-	1.753	1.436	0.738	1.305
P value	-	0.084	0.156	0.463	0.192

CA: Carbohydrate antigen; SCC: Squamous cell carcinoma antigen; NSE: Neuron-specific enolase.