[137 local recurrences after breast carcinoma--a retrospective study]

A retrospective study was performed to follow up the course of the disease in 137 female premenopausal and postmenopausal patients in whom local recurrence of carcinoma of the breast had occurred. Particular attention was given to the dependence of the recurrence-free interval on the tumorobiological parameters of the primary tumour. In 23% of the cases the local recurrence was an expression of generalisation of the tumour with simultaneous occurrence of distant metastases. The average recurrence-free interval was four years, but more than half of the recurrences were seen during the first two postoperative years. For the following parameters we found a statistically significant correlation with the recurrence-free interval: size of the primary tumour (p = 0.0003), the nodal status (p = 0.0006) and in this connection also the number of the metastatically involved lymphatic node level (p = 0.00001). There was also a significant correlation between the duration of the recurrence-free interval and the immunohistochemical oestrogen and progesterone receptor status (p = 0.0005) and the growth fraction (p = 0.0106) determined with the monoclonal antibody Ki67. However, although there was no correlation between recurrence-free survival and the kind of surgical primary therapy that had been employed, adjuvant therapy did exercise a decisive influence: there was significant later incidence of local recurrences (p = 0.00001) subsequent to adjuvant radiotherapy.