title: Ectopic breast fibroadenoma of the vulva.
abstract: BACKGROUND
  Ectopic breast (extramammary) fibroadenomas of the vulva are rare, cosmetically disfiguring, and very difficult to distinguish from other labial masses on physical examination. Extramammary tissue is susceptible to similar benign and malignant changes seen in the breast. Some patients with ectopic breast lesions may harbor an underlying urinary tract anomaly.
  
  
  METHODS
  We report a case of a young woman who presented with an unknown progressively enlarging mass in the vulva. The mass was excised completely in a cosmetic manner and histology demonstrated an ectopic breast fibroadenoma.
  
  
  CONCLUSIONS
  Clinicians should include extramammary lesions in their preoperative differential diagnosis of vulvar masses since some may become neoplastic. Treatment is complete excision and renal imaging should be considered after a confirmed histopathologic diagnosis.
authors.affiliation: From the Department of Obstetrics and Gynecology and the Department of Pathology, INOVA Fairfax Hospital, Falls Church, Virginia; and Faculty of Medicine, George Washington University School of Medicine and Health Sciences, Washington, DC.
authors.forename: Elliott W
authors.initials: EW
authors.lastname: Lucas
authors.forename: Philip
authors.initials: P
authors.lastname: Branton
authors.forename: Fred E
authors.initials: FE
authors.lastname: Mecklenburg
authors.forename: Gaby N
authors.initials: GN
authors.lastname: Moawad
mesh_terms: D000328:Adult; D001940:Breast; D002828:Choristoma / Q000473:pathology* / Q000601:surgery; D005260:Female; D018226:Fibroadenoma / Q000473:pathology* / Q000601:surgery; D006801:Humans; D014846:Vulvar Neoplasms / Q000473:pathology* / Q000601:surgery