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One thousand seventy-eight patients diagnosed with primary breast cancer were examined for racial differences in histopathologic and clinical parameters. There were no observed differences in tumor histopathologic type or tumor endocrine status between races. There were no differences with respect to time to breast tumor recurrence observed between black and white patients. However, differences were observed in factors that contributed to tumor stage at diagnosis and to tumor grade. Survival differences observed in univariant analysis of blacks vs. whites were explainable by the presence of more severe skin involvement, tumor grade, and tumor size at diagnosis in the black patients.