title: Stereotactic, automated, large-core needle biopsy of nonpalpable breast lesions: false-negative and histologic underestimation rates after long-term follow-up.
abstract: OBJECTIVE
  To determine the rate and causes of false-negative findings and histologic underestimates at stereotactic biopsy of nonpalpable breast lesions.
  
  
  METHODS
  Stereotactic, 14-gauge, automated, large-core needle biopsy (LCNB) was performed in 483 consecutive nonpalpable breast lesions. Excision was advised for the 143 carcinomas, 25 atypical ductal hyperplasia (ADH) lesions, and five radial scars. Mammographic follow-up was advised for the benign lesions without a repeat biopsy.
  
  
  RESULTS
  Of the 310 benign lesions, 259 underwent mammographic follow-up at 6-85 months (median, 55 months) without repeat biopsy, 48 underwent repeat biopsy and three were lost to follow-up. On the basis of the histologic diagnosis of carcinoma at surgical biopsy, diagnosis with LCNB was not correct (i.e., disease was underestimated at histologic examination) in 14 (58%) of 24 ADH lesions and two (40%) of five radial scars. Two (1.2%) of 161 lesions with a final diagnosis of carcinoma were benign at LCNB but malignant at repeat biopsy (i.e., false-negative findings at LCNB). Repeat biopsy was prompted by mammographic progression at 6 and 18 months after LCNB.
  
  
  CONCLUSIONS
  The false-negative rate with LCNB was 1.2% in this study and 4.0% in the literature. The presence of carcinoma in ADH and radial scar lesions was often underestimated.
authors: Department of Radiology, Palo Alto Medical Clinic, CA 94301, USA.
authors: R J
authors: RJ
authors: Jackman
authors: K W
authors: KW
authors: Nowels
authors: J
authors: J
authors: Rodriguez-Soto
authors: F A
authors: FA
authors: Marzoni
authors: S I
authors: SI
authors: Finkelstein
authors: M J
authors: MJ
authors: Shepard
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001707:Biopsy, Needle / Q000379:methods*; D001940:Breast / Q000473:pathology; D001943:Breast Neoplasms / Q000473:pathology* / Q000601:surgery; D002114:Calcinosis / Q000473:pathology; D002278:Carcinoma in Situ / Q000473:pathology; D018270:Carcinoma, Ductal, Breast / Q000473:pathology; D018275:Carcinoma, Lobular / Q000473:pathology; D002921:Cicatrix / Q000473:pathology; D018450:Disease Progression; D005188:False Negative Reactions; D005260:Female; D005348:Fibrocystic Breast Disease / Q000473:pathology; D005500:Follow-Up Studies; D006801:Humans; D006965:Hyperplasia; D008137:Longitudinal Studies; D008327:Mammography; D008408:Mastectomy; D015412:Mastectomy, Segmental; D008875:Middle Aged; D012189:Retrospective Studies; D013238:Stereotaxic Techniques