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Erschienen in: Breast Cancer Research and Treatment 3/2009

01.04.2009 | Review

The clinical significance of sentinel lymph node micrometastasis in breast cancer

verfasst von: Neill Patani, Kefah Mokbel

Erschienen in: Breast Cancer Research and Treatment | Ausgabe 3/2009

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Abstract

Introduction The advent of sentinel lymph node biopsy (SLNB) and improvements in histopathological and molecular analysis have increased the rate at which micrometastases (MM) are identified. However, their significance has been the subject of much debate. In this article we review the literature concerning axillary lymph node (ALN) MM, with particular reference to SLNB. The controversies regarding histopathological assessment, clinical relevance and management implications are discussed. Methods Literature review facilitated by Medline and PubMed databases. Results Published studies have reported divergent results regarding the significance and implications of ALN MM in general and sentinel lymph node (SLN) MM in particular. Some studies demonstrate no associations, whilst others have found these to be indicators of poor prognosis, associated with non-SLN involvement, in addition to local and distant failure. Absolute consensus regarding the optimal analytical technique for SLNs has yet to be reached, particularly concerning immunohistochemical (IHC) techniques targeting cytokeratins and the utility of contemporary molecular analysis. Conclusion SLN MM are likely to represent an incremental detriment to prognosis and increased risk of non-SLN involvement, despite only modest up-staging within current classification systems. In the absence of level-1 guidance concerning the management of women with SLN MM, each case requires discussion with regard to other tumour and patient related factors in the context of the multidisciplinary team. Randomized studies are required to evaluate the prognostic significance and optimal management of each category of tumour burden within the SLN. The identification of MM remains highly dependent on the analytical technique employed and there exists potential for stage migration and impact on management decisions.
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Metadaten
Titel
The clinical significance of sentinel lymph node micrometastasis in breast cancer
verfasst von
Neill Patani
Kefah Mokbel
Publikationsdatum
01.04.2009
Verlag
Springer US
Erschienen in
Breast Cancer Research and Treatment / Ausgabe 3/2009
Print ISSN: 0167-6806
Elektronische ISSN: 1573-7217
DOI
https://doi.org/10.1007/s10549-008-0021-6

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