Sentinel lymph node biopsy with metastasis: can axillary dissection be avoided in some patients with breast cancer?
| Autor: | Reynolds C; Departments of Laboratory Medicine and Pathology, and Surgery, Mayo Clinic, Rochester, MN 55905, USA. reynolds.carol@mayo.edu, Mick R, Donohue JH, Grant CS, Farley DR, Callans LS, Orel SG, Keeney GL, Lawton TJ, Czerniecki BJ |
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| Jazyk: | angličtina |
| Zdroj: | Journal of clinical oncology : official journal of the American Society of Clinical Oncology [J Clin Oncol] 1999 Jun; Vol. 17 (6), pp. 1720-6. |
| DOI: | 10.1200/JCO.1999.17.6.1720 |
| Abstrakt: | Purpose: Recent studies have suggested that the sentinel lymph node (SLN) biopsy is an accurate alternative staging procedure for women with breast cancer. The goal of this study was to identify a subset of breast cancer patients in whom metastatic disease was confined only to the SLN. Materials and Methods: From two institutions, we recruited 222 women with breast cancer for SLN biopsy. A SLN biopsy was performed in each patient, followed by an axillary dissection in 182 patients. Histologic and immunohistochemical cytokeratin stains were used on all SLNs. Results: The SLN was identified in 220 (97. 8%) of the 225 biopsies. Evidence of metastatic breast cancer in the SLN was found in 60 (27.0%) of the 222 patients. Of these patients, 32 (53.3%) had evidence of tumor in the SLN only. By multivariate analysis, two factors were found to be significantly associated with a higher likelihood of tumor involvement in the non-SLNs: primary tumor size larger than 2.0 cm (P =.0004) and macrometastasis (> 2.0 mm) in the SLN (P =.002). Additional analysis revealed that none (0%; 95% confidence interval, 0% to 18.5%) of the 18 patients with primary tumors < or = 2.0 cm and micrometastasis to the SLN had remaining axillary lymph node involvement. Conclusion: The primary tumor size and metastasis size in the SLN are independent factors in predicting the incidence of tumor in the non-SLNs. Therefore, the SLN biopsy alone may be adequate for staging and/or therapy decision making in patients with primary breast tumors < or = 2.0 cm and micrometastasis in the SLN. |
| Databáze: | MEDLINE |
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