Table 2.

Relationship between preoperative serum CEA (s‐cea) level and tumor tissue CEA (t‐cea)

	Tumor tissue T‐CEA expression			χ 2	P
	T‐CEA+ (n = 151)	T‐CEA++ (n = 202)	T‐CEA+++ (n = 164)
Serum S‐CEA
≤10 ng/mL (n = 206)	59	86	61	1.146	0.564
>10 ng/mL (n = 311)	92	116	103