title: A case of lymphoma occurring in an ovarian teratoma.
abstract: BACKGROUND
  We describe the discovery, by pathology, of a totally unexpected diagnosis involving an ovarian teratoma.
  
  
  METHODS
  A middle-aged woman underwent routine total abdominal hysterectomy and bilateral salpingoophrectomy for ultrasonically diagnosed uterine fibroids and a coexistent benign right ovarian cyst. The operative findings were of fibroid uterus and right ovarian teratoma. However, pathology revealed a malignant lymphoma occurring in, and arising from, the teratoma.
  
  
  CONCLUSIONS
  The routine removal of a presumed ovarian teratoma may yield unexpected results. Ovarian teratomas are indeed cellular chimeras.
authors.affiliation: Department of Obstetrics and Gynecology, Lagan Valley Hospital, Lisburn, Northern Ireland. alastairmckelvey@doctors.net.uk
authors.forename: Alastair
authors.initials: A
authors.lastname: McKelvey
authors.forename: Daniel
authors.initials: D
authors.lastname: McKenna
authors.forename: Damian
authors.initials: D
authors.lastname: McManus
authors.forename: Mona
authors.initials: M
authors.lastname: Joyce
mesh_terms: D005260:Female; D006801:Humans; D008223:Lymphoma / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000473:pathology* / Q000601:surgery; D013724:Teratoma / Q000473:pathology* / Q000601:surgery