title: Predictors of axillary lymph node metastasis in breast cancer: a systematic review.
abstract: OBJECTIVE
  To review the established and emerging techniques in axillary lymph node prediction and explore their potential impact on clinical practice. To reliably identify patients in whom axillary lymph node surgery, including SLNB, can be safely omitted.
  
  
  METHODS
  Searches of PubMed were made using the search terms "axilla" (or "axillary"), "lymph", "node" and "predictor" (or "prediction"). Articles from abstracts and reports from meetings were included only when they related directly to previously published work.
  
  
  RESULTS
  There are numerous studies in which the predictive utility of biomarkers as determinants of axillary lymph node status have been investigated. Few of these have specifically addressed the attributes of the primary tumour which could offer much potential for the prediction of tumour metastasis to the axillary lymph nodes.
  
  
  CONCLUSIONS
  Currently, no single marker is sufficiently accurate to obviate the need for formal axillary staging using SLNB or axillary clearance.
authors.affiliation: Department of Surgery, Royal Free and University College Medical School, The Medical School Building, 74 Huntley Street, University College London, London WC1E 6AU, UK.
authors.forename: N R
authors.initials: NR
authors.lastname: Patani
authors.forename: M V
authors.initials: MV
authors.lastname: Dwek
authors.forename: M
authors.initials: M
authors.lastname: Douek
mesh_terms: D001365:Axilla; D014408:Biomarkers, Tumor / Q000032:analysis; D001943:Breast Neoplasms / Q000473:pathology*; D005260:Female; D005819:Genetic Markers; D006801:Humans; D008197:Lymph Node Excision; D008207:Lymphatic Metastasis / Q000473:pathology*; D009367:Neoplasm Staging; D011237:Predictive Value of Tests; D011379:Prognosis; D012307:Risk Factors; D021701:Sentinel Lymph Node Biopsy
chemical_list: D014408:Biomarkers, Tumor; D005819:Genetic Markers