title: [Evaluation of the results after using of the BI-RADS categories in 1,777 clinical mammograms].
abstract: OBJECTIVE
  The purpose of our study was to evaluate the results after using the BI-RADS categories in clinical mammography, especially in the BI-RADS 0 and BI-RADS 3 categories.
  
  
  METHODS
  During 1 year clinical mammograms were performed in 1,777 patients. The assessment reported by radiologists was based on the American College of Radiology using BI-RADS categories. In BI-RADS 0 and BI-RADS 3 categories additional examinations, histopathological results, und follow-up results were reported.
  
  
  RESULTS
  Of 1,777 mammograms, 135 (4.1%) were classified into the BI-RADS 0 category. In 60 of 67 (90%) findings categorized as BI-RADS 0, MR mammography was performed and the results of the mammograms were ultimately classified into the BI-RADS 2 category. In 18 of 135 (13.3%) patients with BI-RADS 0 no further examinations were done. In 113 of 1,777 (3.4%) mammograms were classified into the BI-RADS 3 category. In 11 of 113 (9.7%) patients with BI-RADS 3 histopathology was done. A follow-up mammogram after 6 months was done only in 24 of 102 (23%) patients. In 21 of 102 (18.5%) patients with BI-RADS 3 follow-up mammograms were not performed.
  
  
  CONCLUSIONS
  Not all patients with mammographic lesions in the BI-RADS 0 category avail themselves of further diagnostic work-up. Therefore in BI-RADS 0 category lesions, additional work-up should be performed directly after mammography during the same consultation. In some cases of BI-RADS 0 category, MR mammography is able to resolve the problem. Therefore the indication for MR mammography should be more commonly used.
authors.affiliation: Institut für Diagnostische und Interventionelle Radiologie und Neuroradiologie, Universitätsklinikum, Essen. elke.hauth@uni-essen.de
authors.forename: E A
authors.initials: EA
authors.lastname: Hauth
authors.forename: K
authors.initials: K
authors.lastname: Khan
authors.forename: B
authors.initials: B
authors.lastname: Wolfgarten
authors.forename: A
authors.initials: A
authors.lastname: Betzler
authors.forename: R
authors.initials: R
authors.lastname: Kimmig
authors.forename: M
authors.initials: M
authors.lastname: Forsting
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001943:Breast Neoplasms / Q000145:classification / Q000000981:diagnostic imaging* / Q000453:epidemiology*; D005260:Female; D005858:Germany / Q000453:epidemiology; D006801:Humans; D008327:Mammography / Q000706:statistics & numerical data*; D008875:Middle Aged; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index