[Retracted] A Retrospective Study of Effectiveness of Thoracoscopic Lobectomy and Segmentectomy in Patients with Early-Stage Non-Small-Cell Lung Cancer

Table 6

Comparison of serum tumor marker levels between the two groups ().

Groups	Number of cases	CEA (ng/mL)			CA50 (U/mL)			CYFRA21-1 (ng/mL)
		Presurgery	24 h after surgery	72 h after surgery	Presurgery	24 h after surgery	72 h after surgery	Presurgery	24 h after surgery	72 h after surgery
Observation group	47		^a	^a		^a	^a		^a	^a
Control group	47		^a	^a		^a	^a		^a	^a
		0.987	4.688	5.141	0.597	3.890	4.407	1.280	6.620	6.604
		0.326	0.001	0.001	0.552	0.001	0.001	0.204	0.001	0.001

Note: ^a, compared with the group before surgery. CEA: cancer embryonic antigen; CA: carbohydrate antigen; CYFRA: cytokeratin 19 fragment.