title: [Placental site trophoblastic tumor with atypical choriocarcinoma. Case Report].
abstract: BACKGROUND
  The placental site trophoblastic tumor is the second rarest tumor of trophoblastic disease, with less than 300 cases reported. Clinical presentation it's a diagnostic challenge, it has an unpredictable malignant potential, and it can develop choriocarcinoma and even have simultaneous presentation.
  
  
  METHODS
  We present the case of a 34 year old woman with chronic transvaginal bleeding since her last cesarean (five months ago), with histologic diagnosis of placental site trophoblastic tumor and inmuno- histoquimic report of choriocarcinoma, this early diagnosis improves her survival prognostic.
  
  
  CONCLUSIONS
  placental site trophoblastic tumor and their evolution to choriocarcinoma have a low rate but it's possible. That it's the reason why complete diagnosis with biopsy, histologic and inmunohistoquimic report is mandatory to improve therapeutic.
authors.forename: M P
authors.initials: MP
authors.lastname: Álvarez-Goris
authors.forename: P
authors.initials: P
authors.lastname: De la Torre y Fernández
authors.forename: J M
authors.initials: JM
authors.lastname: Huerta-Hentschel
authors.forename: R
authors.initials: R
authors.lastname: Sónchez-Zamora
mesh_terms: D000328:Adult; D002822:Choriocarcinoma / Q000175:diagnosis / Q000601:surgery; D005260:Female; D006801:Humans; D009378:Neoplasms, Multiple Primary / Q000175:diagnosis / Q000601:surgery; D011247:Pregnancy; D018245:Trophoblastic Tumor, Placental Site / Q000175:diagnosis / Q000601:surgery; D014594:Uterine Neoplasms / Q000175:diagnosis / Q000601:surgery