Abstract
Two hundred and eighteen patients aged 31 to 92 years (mean age 57+1.3 years), who had been treated for breast cancer (BC), were examined. They were divided into 2 groups: 1) 99 patients who had undergone organ-sparing surgery (OSS) and 2) 119 patients after radical mastectomy (RME). The degree of primary tumor differentiation, metastases to regional lymph nodes, and the immunohistochemical pattern of a tumor (ER, PR, and HER-2/neu) were assessed as prognostic factors. The local recurrence rate was found to be 13 and 9% in Groups 1 and 2, respectively. The relapse-free period averaged 53+8 and 56+10 months in Groups 1 and 2, respectively. The degree of tumor differentiation, metastases to regional lymph nodes, the receptor status (ER, PR) of a primary tumor in both groups, and the expression of HER-2/neu after RME do not affect the occurrence of recurrent BC at the 0.05 significance level. In the post-OSS patients, the HER-2/neu-positive primary tumor showed a statistically significant correlation with the rate of recurrent BC at the 0.05 significance level.
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