title: Breast fibroadenoma with atypical features: a case report.
abstract: BACKGROUND
  Although the cytologic features of fibroadenoma are well established, some of the smears from these tumors cause serious diagnostic problems.
  
  
  METHODS
  In the cytologic smears from a deeply located breast nodule in a 53-year-old female we found, besides the typical features of fibroadenoma, atypical cells suggesting carcinoma, with intranuclear indentations, nuclear molding, mitotic activity and intracytoplasmic vacuoles. Histologic examination confirmed the diagnosis of fibroadenoma, but marked ductal cell hyperplasia was also revealed.
  
  
  CONCLUSIONS
  Some disturbing atypical changes may occur in fibroadenoma smears.
authors.affiliation: Department of Cancer Pathology, Medical University of Lodź, Poland.
authors.forename: R
authors.initials: R
authors.lastname: Kordek
authors.forename: W
authors.initials: W
authors.lastname: Biernat
authors.forename: R
authors.initials: R
authors.lastname: Kubiak
mesh_terms: D001707:Biopsy, Needle; D001943:Breast Neoplasms / Q000473:pathology*; D005260:Female; D018226:Fibroadenoma / Q000473:pathology*; D006801:Humans; D008875:Middle Aged