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The prognostic relevance of such micrometastases and isolated tumour cells, and their impact on stage migration and decision making with respect to axillary dissection and adjuvant systemic therapy, are discussed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Examination of SLNs by serial section with haematoxylin and eosin and\/or immuno histochemical staining significantly increases the detection rate of micrometastases, even in patients with very small (T1) tumours. However, the prognostic relevance of isolated tumour cells and small micrometastases is uncertain. Moreover, deciding which patients might benefit from axillary dissection is complicated by the fact that adjuvant radiotherapy and systemic chemotherapy alone may eradicate most micrometastases.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Ongoing randomized trials comparing the results of SLN biopsy alone with those of axillary dissection should answer the question of whether isolated tumour cells and small micrometastases are clinically relevant. This should also indicate which patients with SLN micrometastasis are likely to benefit from axillary dissection. In this sense, SLN biopsy must be considered still to be at an investigative stage; outwith clinical trials complete axillary dissection should be performed on all patients with SLN micrometastasis.<\/jats:p><\/jats:sec>","DOI":"10.1046\/j.1365-2168.2002.02294.x","type":"journal-article","created":{"date-parts":[[2003,3,11]],"date-time":"2003-03-11T07:27:10Z","timestamp":1047367630000},"page":"1505-1515","source":"Crossref","is-referenced-by-count":43,"title":["Therapeutic relevance of breast cancer micrometastases in sentinel lymph nodes"],"prefix":"10.1093","volume":"89","author":[{"given":"M","family":"Noguchi","sequence":"first","affiliation":[{"name":"Surgical Centre, Kanazawa University Hospital, Takara-machi, 13-1, Kanazawa, 920-8640, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2002,12,2]]},"reference":[{"key":"2021070905592258000_bib1","doi-asserted-by":"crossref","first-page":"712","DOI":"10.1002\/1097-0142(19840201)53:3+<712::AID-CNCR2820531320>3.0.CO;2-I","article-title":"Pathological findings from the National Surgical Adjuvant Project for Breast Cancer (Protocol no. 4): discriminants for tenth year treatment failure","volume":"53","author":"Fisher","year":"1984","journal-title":"Cancer"},{"key":"2021070905592258000_bib2","doi-asserted-by":"crossref","first-page":"97","DOI":"10.1007\/BF01806522","article-title":"Adjuvant therapy in node-negative breast cancer. 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