title: Epithelioid trophoblastic tumor.
abstract: OBJECTIVE
  To describe a case of epithelioid trophoblastic tumor (ETT) in a postmenopausal woman, which had several peculiar features that differentiate it from previously reported ETTs.
  
  
  METHODS
  ETT of the uterus is a rare form of trophoblastic tumor with only 100 cases distinguished until now. Our case differs from the previously reported ones due to its several exceptional features. Our patient had no history of trophoblastic or gynecological disease; is postmenopausal; had endocervical extension from the beginning; recurrences and metastasis at follow up; and had a high Ki-67 index and a normal beta-human chorionic gonadotropin value.
  
  
  CONCLUSIONS
  Because precise differential diagnosis will alter the therapeutic approach and prognosis, it is necessary for treating physicians to be aware of these unusual presentations.
authors.affiliation: Department of Pathology, Dr. Lutfi Kirdar Kartal Training and Research Hospital, Istanbul, Turkey. Electronic address: sskeser2@hotmail.com.
authors.forename: Sevinc Hallac
authors.initials: SH
authors.lastname: Keser
authors.affiliation: Department of Pathology, Dr. Lutfi Kirdar Kartal Training and Research Hospital, Istanbul, Turkey.
authors.forename: Sermin Coban
authors.initials: SC
authors.lastname: Kokten
authors.affiliation: Department of Pathology, Okmeydani Training and Research Hospital, Istanbul, Turkey.
authors.forename: Caglar
authors.initials: C
authors.lastname: Cakir
authors.affiliation: Department of Pathology, Dr. Lutfi Kirdar Kartal Training and Research Hospital, Istanbul, Turkey.
authors.forename: Sibel
authors.initials: S
authors.lastname: Sensu
authors.affiliation: Department of Obstetrics and Gynecology, Dr. Lutfi Kirdar Kartal Training and Research Hospital, Istanbul, Turkey.
authors.forename: Esra Esim
authors.initials: EE
authors.lastname: Buyukbayrak
authors.affiliation: Department of Pathology, Dr. Lutfi Kirdar Kartal Training and Research Hospital, Istanbul, Turkey.
authors.forename: Nimet
authors.initials: N
authors.lastname: Karadayi
mesh_terms: D001706:Biopsy; D003937:Diagnosis, Differential; D015622:Epithelioid Cells / Q000473:pathology*; D005260:Female; D006801:Humans; D007044:Hysterectomy / Q000379:methods*; D008875:Middle Aged; D014057:Tomography, X-Ray Computed; D014328:Trophoblastic Neoplasms / Q000175:diagnosis* / Q000601:surgery; D014594:Uterine Neoplasms / Q000175:diagnosis* / Q000601:surgery
keywords: gestational; trophoblastic disease; uterine neoplasms