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Concentrations of CA 15-3 antigen were measured at diagnosis in the sera of 90 node-negative breast cancer women. CA 15-3 values correlated with the higher histological grade (p<0.02), the low contents of estrogen (p<0.01) and progesterone (p<0.00l) receptors. No association was found between CA 15-3 and tumor size. In univariative analysis of patients who completed 24 months follow-up (median...
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