Significance of serum carcinoembryonic antigen in metastatic breast cancer patients: A prospective study

Table 4 Serum carcinoembryonic antigen and response to treatment in bone, liver, and lung metastases

Serum CEA (ng/mL)	Bone metastases	No bone metastases	P value
Median pre-treatment serum CEA	11.7 (2.9-48.4)	6.8 (2-32.3)	0.788
Median post-treatment serum CEA	9 (2-20)	2 (1-9)	0.063
	Liver metastases	No liver metastases
Median pre-treatment serum CEA	11.7 (4.4-62.7)	6.8 (1.9-22.7)	0.244
Median post-treatment serum CEA	8 (1.2-19.75)	3 (1.25-11.5)	0.352
	Lung metastases	No lung metastases
Median pre-treatment serum CEA	7.8 (1.9-31.3)	9.78 (5.15-66.64)	0.353
Median post-treatment serum CEA	3.5 (1-13.75)	5 (1.5-10)	0.93

CEA: Carcinoembryonic antigen.