The Clinical Value of the Combined Detection of Enhanced CT, MRI, CEA, and CA199 in the Diagnosis of Rectal Cancer

Table 4

Comparison of serum CEA and CA199 levels between the two groups ( ± s).

Group	n	CEA (ng/mL)	CA199 (U/mL)
Malignant group	156	5.63 ± 1.02	39.58 ± 3.47
Benign group	52	1.85 ± 0.64	12.33 ± 1.52
X^2		21.462	43.078
value		<0.001	<0.001