title: Vacuum-assisted stereotactic breast biopsy: histologic underestimation of malignant lesions.
abstract: OBJECTIVE
  The histopathologic correlation between stereotactic core needle biopsy and subsequent surgical excision of mammographically detected nonpalpable breast abnormalities is improved with a larger-core (11-gauge) device.
  
  
  METHODS
  Retrospective medical record and histopathologic review.
  
  
  METHODS
  University-based academic practice setting.
  
  
  METHODS
  Two hundred one patients who underwent surgical excision of mammographic abnormalities that had undergone biopsy with an 11-gauge vacuum-assisted stereotactic core biopsy device.
  
  
  METHODS
  Correlation between stereotactic biopsy histologic results and the histologic results of subsequent surgical specimens.
  
  
  RESULTS
  Results of stereotactic biopsy performed on 851 patients revealed atypical hyperplasia in 46 lesions, ductal carcinoma in situ (DCIS) in 89 lesions, and invasive cancer in 73 mammographic abnormalities. Subsequent surgical excision of the 46 atypical lesions revealed 2 cases of DCIS (4.3%) and 4 cases of invasive carcinoma (8.7%). Lesions diagnosed as DCIS on stereotactic biopsy proved to be invasive carcinoma in 10 (11.2%) of 89 patients on subsequent excision. Stereotactic biopsy completely removed 21 (23.6%) of 89 DCIS lesions and 20 (27.4%) of 73 invasive carcinomas.
  
  
  CONCLUSIONS
  In summary, 11-gauge vacuum-assisted core breast biopsy accurately predicts the degree of disease in the majority of malignant lesions; however, understaging still occurs in 11% to 13% of lesions showing atypical hyperplasia or DCIS.
authors.affiliation: Department of Surgery, James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, USA. burak.1@osu.edu
authors.forename: W E
authors.initials: WE
authors.lastname: Burak
authors.forename: K E
authors.initials: KE
authors.lastname: Owens
authors.forename: M B
authors.initials: MB
authors.lastname: Tighe
authors.forename: L
authors.initials: L
authors.lastname: Kemp
authors.forename: S A
authors.initials: SA
authors.lastname: Dinges
authors.forename: C L
authors.initials: CL
authors.lastname: Hitchcock
authors.forename: J
authors.initials: J
authors.lastname: Olsen
mesh_terms: D001706:Biopsy / Q000295:instrumentation / Q000379:methods; D001940:Breast / Q000473:pathology*; D001943:Breast Neoplasms / Q000473:pathology*; D002278:Carcinoma in Situ / Q000473:pathology; D018270:Carcinoma, Ductal, Breast / Q000473:pathology; D005260:Female; D006801:Humans; D006965:Hyperplasia / Q000473:pathology; D008499:Medical Records; D012189:Retrospective Studies; D013238:Stereotaxic Techniques