How representative is a lymph node biopsy from the axilla in a node-negative breast cancer patient?
D001365:Axilla; D001706:Biopsy; D001943:Breast Neoplasms / Q000473:pathology / Q000601:surgery*; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D008197:Lymph Node Excision / Q000592:standards*; D008198:Lymph Nodes / Q000473:pathology*; D008207:Lymphatic Metastasis / Q000175:diagnosis*