title: Does the insertion of a gel-based marker at stereotactic breast biopsy allow subsequent wire localizations to be carried out under ultrasound guidance?
abstract: OBJECTIVE
  To investigate whether the insertion of a gel-based marker at the time of stereotactic breast biopsy allows subsequent preoperative localization to be performed under ultrasound guidance.
  
  
  METHODS
  One hundred consecutive women who underwent either a 10 G stereotactic vacuum-assisted breast biopsy or 14 G stereotactic core biopsy with marker placement, followed by wire localization and surgical excision were identified. All had mammographic abnormalities not initially visible with ultrasound. The method of preoperative localization was recorded and its success judged with reference to the wire position on the post-procedure films relative to the mammographic abnormality and the marker. Histopathology data were reviewed to ensure the lesion had been adequately excised.
  
  
  RESULTS
  Eighty-three women (83%) had a successful ultrasound-guided wire localization. Successful ultrasound-guided localization was more likely after stereotactic vacuum biopsy (86%) compared to stereotactic core biopsy (68%), although this did not quite reach statistical significance (p=0.06).
  
  
  CONCLUSIONS
  The routine placement of a gel-based marker after stereotactic breast biopsy facilitates preoperative ultrasound-guided localization.
authors.affiliation: Nottingham Breast Institute, Nottingham City Hospital, Hucknall Road, Nottingham, UK.
authors.forename: M A
authors.initials: MA
authors.lastname: McMahon
authors.forename: J J
authors.initials: JJ
authors.lastname: James
authors.forename: E J
authors.initials: EJ
authors.lastname: Cornford
authors.forename: L J
authors.initials: LJ
authors.lastname: Hamilton
authors.forename: H C
authors.initials: HC
authors.lastname: Burrell
mesh_terms: D001706:Biopsy / Q000379:methods*; D001940:Breast / Q000473:pathology*; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D005782:Gels; D006801:Humans; D011300:Preoperative Care; D013238:Stereotaxic Techniques; D016217:Ultrasonography, Mammary / Q000379:methods*
chemical_list: D005782:Gels