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Impact of omission of completion axillary lymph node dissection (cALND) or axillary radiotherapy (ax RT) in breast cancer patients with micrometastases (pN1mi) or isolated tumor cells (pN0[i+]) in the sentinel lymph node (SN): Results from the MIRROR stud

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发布日期:2009-09-29 17:02 文章来源:丁香园
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关键词: MIRROR cALND   点击次数:

V. C. Tjan-Heijnen, M. J. Pepels, M. de Boer, G. F. Borm, J. A. van Dijck, C. H. van Deurzen, E. M. Adang, M. B. Menke-Pluymers, P. J. van Diest, P. Bult

Methods: Patients operated for breast cancer in all Dutch hospitals in the years 1998-2005, having favorable primary tumor characteristics, and having undergone an SN biopsy without macrometastases as final N-stage were included. For this present research question, patients were categorized by their SN-stage. Median follow-up was 4.7 years. The Kaplan-Meier method was used to estimate 5-year axillary recurrence (AR) rates, and Cox regression was used to estimate the hazard ratios (HR). In the analyses, the effect of AST was taken into account.

Results: In total, 835 patients with pN0(i-)(sn), 799 patients with pN0(i+)(sn), and 958 patients with pN1mi(sn) were included. AR rates, and HRs on AR are displayed below.

Conclusions: Omission of cALND or ax RT in patients with pN1mi(sn) resulted in a significantly higher 5-year AR rate, even after correction for AST, and other patient and tumor characteristics. This indicates that patients with pN1mi(sn) should undergo cALND or ax RT to prevent AR. Support: The Netherlands Organization for Health Research and Development (ZonMw) and the Dutch Breast Cancer Trialists' Group (BOOG).

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