title: Imaging features of benign adenomyoepithelioma of the breast.
abstract: OBJECTIVE
  The purpose of our study was to evaluate the imaging features of benign adenomyoepithelioma of the breast with a focus on sonographic (US) appearances.
  
  
  METHODS
  Ten benign adenomyoepitheliomas in 9 patients were included in this study. Mammographic and US findings were analyzed retrospectively by 2 radiologists according to the Breast Imaging-Reporting and Data System (BI-RADS) lexicon. The BI-RADS final assessment category was also recorded.
  
  
  RESULTS
  Of the 8 lesions for which mammography was available, 4 lesions presented with abnormal findings. Two lesions presented with an indistinct, irregular, isodense mass and a circumscribed, oval, isodense mass. The other 2 lesions presented with areas of focal asymmetry and asymmetry, respectively. On US, all of 10 lesions presented as a mass. The masses measured 0.5-1.2 cm (mean, 0.8 cm), were irregular (n = 8) or oval (n = 2) with microlobulated (n = 5), indistinct (n = 3), or angular (n = 2) margins. They were all hypoechoic, had non parallel orientation in 6 cases, and increased peripheral vascularity in 7 cases. The BI-RADS final assessment category was 4B in 6, and 4A in 4.
  
  
  CONCLUSIONS
  Mammographic findings of benign adenomyoepithelioma were nonspecific. An irregular, non parallel orientation, microlobulated or indistinct margin, hypoechogenicity, and increased peripheral vascularity were the most frequent US features.
authors: Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, Busan, Korea. pymrad@yahoo.co.kr
authors: Young Mi
authors: YM
authors: Park
authors: Ji Sung
authors: JS
authors: Park
authors: Hyun Seok
authors: HS
authors: Jung
authors: Hye Kyoung
authors: HK
authors: Yoon
authors: Wei Tse
authors: WT
authors: Yang
mesh_terms: D055331:Adenomyoepithelioma / Q000000981:diagnostic imaging* / Q000473:pathology; D000328:Adult; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D006801:Humans; D008327:Mammography; D008875:Middle Aged; D012189:Retrospective Studies; D018615:Ultrasonography, Doppler, Color; D016217:Ultrasonography, Mammary