Table 1.

Comparison of tumor markers pre- and post-neoadjuvant therapy

		Pre-Neoadjuvant	Post-Neoadjuvant
Patient 1	CEA ng/ml	4.95	4.22
	CA-199 u/ml	57.88	30.38
Patient 2	CEA ng/ml	3.36	3.17
	CA-199 u/ml	9.53	8.7
Patient 3	CEA ng/ml	46	3.17
	CA-199 u/ml	1076	8.7
Patient 4	CEA ng/ml	345	5.22
	CA-199 u/ml	6.46	4.38

CEA and CA-199 were measured in each patient at the time of initial treatment (pre-neoadjuvant) and two or three days before surgery (post-neoadjuvant). CEA, carcinoembryonic antigen; CA-199, carbohydrate antigen-199