The primary administration of chemotherapy leads to a reduction in size of tumors, increasing the possibility of breast-conserving surgery in both locally advanced, inoperable and primary operable mamma carcinomas. This, however, increases the rate of local relapse and the rate of mastectomy over the course of the disease, even although the EUSOMA guidelines are not exceeded. Whether the pre-surgical administration of chemotherapy with pathological complete remission actually increases the disease-free rate and overall survival remains to be determined. Further clinical studies are required to establish the reliability of sentinel lymph-node biopsy; currently, axillary lymphadenectomy is still the standard therapy. The response of the tumor to therapy, in correlation with predictive factors and the molecular-genetic profile, could make more individualized treatment regimes possible in the future.
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