title: Endometrial adenocarcinoma with trophoblastic differentiation.
abstract: OBJECTIVE
  To report a case of stage IIIc poorly differentiated endometrial adenocarcinoma with trophoblastic differentiation and to review previously reported cases.
  
  
  METHODS
  The clinical course and histopathology of the case were reviewed, and a literature search for other reported cases was performed.
  
  
  RESULTS
  The tumor contained syncytiotrophoblast-like giant cells that stained positively for the beta subunit of human chorionic gonadotropin (beta-hCG), and the patient's serum beta-hCG level was elevated (95 mIU/ml), but became undetectable after treatment. Beta-hCG was used as a tumor marker during further therapy. At 16 months' survival, she remains without evidence of disease and with a beta-hCG (level < 5 mIU/ml). Nine other cases of trophoblastic differentiation in gynecologic nontrophoblastic tumors have been reported, five in endometrial carcinomas which we review.
  
  
  CONCLUSIONS
  Trophoblastic differentiation in gynecologic nontrophoblastic tumors is rare. Beta-hCG may be useful as a tumor marker in these cases. The clinical behavior of these tumors has been aggressive, with advanced stages at diagnosis, early widespread metastases or recurrences and poor patient outcomes. The patient presented in this report, however, remains without evidence of disease 16 months following diagnosis and may be the longest survivor with this tumor reported to date.
authors.affiliation: Department of Obstetrics and Gynecology, University of Pennsylvania Health System, Philadelphia 19104, USA.
authors.forename: C S
authors.initials: CS
authors.lastname: Bradley
authors.forename: I
authors.initials: I
authors.lastname: Benjamin
authors.forename: J E
authors.initials: JE
authors.lastname: Wheeler
authors.forename: S C
authors.initials: SC
authors.lastname: Rubin
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology*; D000368:Aged; D014408:Biomarkers, Tumor / Q000032:analysis; D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000032:analysis; D016889:Endometrial Neoplasms / Q000473:pathology*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011379:Prognosis; D015996:Survival Rate; D014328:Trophoblastic Neoplasms / Q000473:pathology*
chemical_list: D014408:Biomarkers, Tumor; D018997:Chorionic Gonadotropin, beta Subunit, Human