[CA 15-3 in the diagnosis and monitoring of carcinoma of the breast and its correlations with CEA].

: The effectiveness of marker CA 15-3 is assessed for the purposes of early diagnosis of breast cancer and its monitoring and data are compared with that of CEA. The results obtained in a series of 71 breast tumours show that CA 15-3 presents high positivity for T2 (66.2%) and possesses greater diagnostic sensitivity and accuracy than CEA.