title: Accuracy of stereotactic core-needle breast biopsy in atypical ductal hyperplasia.
abstract: BACKGROUND
  The histologic diagnosis of atypical ductal hyperplasia (ADH) has been reported as having a high rate of malignancy, either ductal carcinoma in situ (DCIS) or invasive ductal carcinoma (IDC). We reviewed our surgical group's experience with stereotactic core-needle biopsies (SCNB), specifically looking at the follow-up of ADH.
  
  
  METHODS
  From November 1994 through July 1997 our group performed 539 SCNB. Twenty-one patients (4%) were diagnosed as ADH. Eighteen patients had subsequent wire-localized excisional biopsies. Three patients were followed up mammographically. One patient refused follow-up.
  
  
  RESULTS
  Of the 18 patients who underwent excisional biopsies, 2 patients were found to have DCIS and 1 patient had lobular carcinoma in-situ. There were no cases of IDC.
  
  
  CONCLUSIONS
  Our results show a much lower incidence of malignancy in cases of ADH found on SCNB than has been previously reported. While the standard of care is still to follow up ADH found on SCNB with excisional biopsy, more data may justify following up certain subsets of patients.
authors.affiliation: Spokane Surgical Group, Washington, USA.
authors.forename: P H
authors.initials: PH
authors.lastname: Lin
authors.forename: J C
authors.initials: JC
authors.lastname: Clyde
authors.forename: D M
authors.initials: DM
authors.lastname: Bates
authors.forename: J M
authors.initials: JM
authors.lastname: Garcia
authors.forename: G H
authors.initials: GH
authors.lastname: Matsumoto
authors.forename: G W
authors.initials: GW
authors.lastname: Girvin
mesh_terms: D001707:Biopsy, Needle / Q000295:instrumentation / Q000379:methods* / Q000706:statistics & numerical data; D001940:Breast / Q000473:pathology*; D001941:Breast Diseases / Q000473:pathology; D001943:Breast Neoplasms / Q000473:pathology; D002114:Calcinosis / Q000473:pathology; D018270:Carcinoma, Ductal, Breast / Q000473:pathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006965:Hyperplasia / Q000473:pathology; D012680:Sensitivity and Specificity; D013238:Stereotaxic Techniques / Q000295:instrumentation / Q000706:statistics & numerical data