[Changes in carcinoembryonic antigen in patients with breast cancer].

Serum carcinoembryonic antigen (CEA) level was evaluated by radioimmunoassay technique (Kit-Sorin) in 13 patients (12 female and 1 male) with breast carcinoma. Serial determinations were carried out before and after surgery and during chemotherapy. Data indicate that CEA levels are correlated with the size and the staging of the neoplasm as well as with the efficacy of the therapeutic approach.