RESUMO
Objective To investigate the expression of tumor-associated carbohydrate antigen sTn in breast neoplasm,and analyzed the association between the expression of sTn and size of tumor,age,menopause,axillary lymph node metastasis,clinical stage,pathologic grade and the level of estrogen receptor in breast carcinoma.Methods The monoclonal antibody TKH-2 was used to detect the immunohistochemical expression of sTn in 46 cases of breast carcinoma,4 breast adenoma and 2 gynecomastia.The level of estrogen receptor was detected by S-P method in 46 breast carcinoma.Results Immunohistochemical expression of sTn was not detected in breast adenoma and gynecomastia.The expression of sTn was found in 28 of 46 breast carcinoma(60.9%).The expression of sTn was significantly associated with axillary lymph node metastasis(P0.05).In 46 breast carcinoma,the positive quantity of estrogen receptor was 25(54.3%).Conclusion STn immunostaining appears to be a poor prognostic factor in patients with breast carcinoma.It is more useful in detecting the expression of sTn together with the level of estrogen receptor in breast carcinoma to investigate the prognosis of the patients.