title: Diagnostic accuracy and prognostic value of core biopsy in the management of breast cancer: a series of 542 patients.
abstract: OBJECTIVE
  Core biopsy is considered to be a highly accurate method for gaining preoperative diagnosis of breast cancer. The purpose of this study is to compare the results of core biopsy with those of the surgical excision specimen.
  
  
  METHODS
  A total of 567 core biopsies with subsequent surgical excision were performed.
  
  
  RESULTS
  In 488 patients, invasive breast cancer was diagnosed in the preoperative biopsy and in 486 patients (99.6%) the surgical specimen showed identical results. In 160 of the 502 patients (32%) with invasive breast cancer, DCIS was found in the surgical specimen but was not diagnosed in the biopsy. Estrogen and progesterone receptor demonstrated a high rate of agreement, Her2/neu analysis showed a complete concordance in 54% of patients.
  
  
  CONCLUSIONS
  Core biopsies allow diagnosis of invasive breast cancer with high accuracy. Levels of agreement have to be improved for the detection of DCIS and Her2/neu status.
authors.affiliation: Department of Gynecology, Charité, Universitätsmedizin Berlin. christiane.richter-ehrenstein@charite.de
authors.forename: Christiane
authors.initials: C
authors.lastname: Richter-Ehrenstein
authors.forename: Sylvia
authors.initials: S
authors.lastname: Müller
authors.forename: Aurelia
authors.initials: A
authors.lastname: Noske
authors.forename: Achim
authors.initials: A
authors.lastname: Schneider
mesh_terms: D014408:Biomarkers, Tumor / Q000032:analysis; D001706:Biopsy / Q000379:methods*; D001940:Breast / Q000473:pathology*; D001943:Breast Neoplasms / Q000737:chemistry / Q000473:pathology* / Q000601:surgery; D018270:Carcinoma, Ductal, Breast / Q000737:chemistry / Q000473:pathology* / Q000601:surgery; D002285:Carcinoma, Intraductal, Noninfiltrating / Q000737:chemistry / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D009367:Neoplasm Staging; D011237:Predictive Value of Tests; D011379:Prognosis; D018719:Erb-b2 Receptor Tyrosine Kinases / Q000032:analysis; D011960:Receptors, Estrogen / Q000032:analysis; D011980:Receptors, Progesterone / Q000032:analysis; D015203:Reproducibility of Results
chemical_list: D014408:Biomarkers, Tumor; D018719:Erb-b2 Receptor Tyrosine Kinases; D011960:Receptors, Estrogen; D011980:Receptors, Progesterone