Table 3. Serum tumor markers measurement of different nodal status.

Node status	AFP (ng/mL)	CEA (ng/mL)	NSE (ng/mL)	β-MG (ng/mL)	CA15-3 (U/mL)	CA 19-9 (U/mL)
N0	4.34±3.30	2.13±5.12	13.21±7.93	1.20±0.62	8.33±4.21	15.23±10.39
N1–2	5.06±4.15	7.68±10.39	12.33±3.31	1.44±1.08	8.30±4.65	18.78±10.58
P value	0.293	<0.001	0.586	0.070	0.971	0.055

AFP, alpha fetoprotein; CEA, carcinoembryonic antigen; NSE, neuron-specific enolase; β-MG, β2-microglobulin; CA15-3, arbohydrate antigen 15-3; CA19-9, arbohydrate antigen 19-9.