title: [Sonographically guided core needle biopsy of the breast: technique, accuracy and indications].
abstract: OBJECTIVE
  The purpose of this retrospective analysis was to assess the diagnostic accuracy and complication rate of sonographically guided core needle biopsy in palpable breast masses, mammographically detected nonpalpable lesions, and sonographically detected clinically and mammographically occult lesions.
  
  
  METHODS
  Sonographically guided core needle biopsy was performed in 590 lesions in 572 patients, by using an automated biopsy gun with a 14-gauge large core needle and a coaxial system. Core needle biopsy results were compared with surgical biopsy in 265 cases. 325 lesions with benign histologic diagnoses were followed up for at least 18 months.
  
  
  RESULTS
  234 carcinomas and 356 benign abnormalities were found in the 572 patients. Core needle biopsy reached a sensitivity of 98.7% at a specificity of 99.7%. Underestimation rates for lesions initially diagnosed as DCIS and for lesions initially diagnosed as ADH were 3/10 and 6/14, respectively. Of three false-negative results, two were immediately recognized, and one was identified at follow-up. Serious bleeding occurred in one patient (0.2% complication rate).
  
  
  CONCLUSIONS
  This report confirms that sonographically guided large core needle biopsy is a safe, reliable and cost-effective method for the assessment of both palpable and nonpalpable, mammographically and sonographically detected breast abnormalities.
authors.affiliation: Klinische Abteilung für Radiodiagnostik I, Univ.-Klinik für Radiodiagnostik, Anichstrasse 35, 6020 Innsbruck/Osterreich.
authors.forename: W
authors.initials: W
authors.lastname: Buchberger
authors.forename: A
authors.initials: A
authors.lastname: Niehoff
authors.forename: P
authors.initials: P
authors.lastname: Obrist
authors.forename: G
authors.initials: G
authors.lastname: Rettl
authors.forename: M
authors.initials: M
authors.lastname: Dünser
mesh_terms: D000465:Algorithms; D001707:Biopsy, Needle / Q000009:adverse effects / Q000379:methods*; D001940:Breast / Q000473:pathology*; D001943:Breast Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D003937:Diagnosis, Differential; D005188:False Negative Reactions; D005260:Female; D006801:Humans; D008327:Mammography; D016217:Ultrasonography, Mammary
vernacular_title: Ultraschallgezielte Stanzbiopsie der Mamma: Technik, Ergebnisse, Indikationen.