A case of metaplastic and proliferating Brenner tumor

Abstract

Background : We report cytological findings for metaplastic and proliferating Brenner tumor.
Case : A case of borderline malignancy tumor examined using imprint smear cytology was found to be metaplastic and proliferating Brenner-like. Cytology showed a mucinous background and apparently transitional cells. Partial clusters resembled squamous or gland-like cells. Cell atypia was mild.
Conclusion : Metaplastic and proliferating Brenner tumors proliferate strongly. Cytological findings indicated a nearly benign Brenner tumor, however, making diagnosis difficult as to benign or malignant if we do not know about metaplastic and proliferating Brenner tumors.