title: Fetiform Teratoma in the Ovary of a 7-Year-Old Girl: A Case Report.
abstract: BACKGROUND
  Fetiform teratoma, a highly differentiated mature cystic teratoma resembling a fetus, is rare and typically found in the ovaries of women of reproductive age. In this report we describe, to our knowledge, the youngest case of ovarian fetiform teratoma.
  
  
  METHODS
  A 7-year-old girl presented with acute abdominal pain. Radiological examinations revealed a 5.2-cm ovarian complex cystic mass with fetal-like components in favor of fetus in fetu and teratoma. After surgical removal, the mass resembled a fetus consisting of a head, two eye slits, two small upper limb projections, and hair. Pathology indicated mature cystic teratoma supporting the diagnosis of fetiform teratoma.
  
  
  CONCLUSIONS
  Although not commonly found in children, fetiform teratoma must be considered in the diagnosis of a child who presents with an adnexal mass resembling a fetus.
authors: Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.
authors: Hanna R
authors: HR
authors: Goldberg
authors: Section of Gynecology, Hospital for Sick Children, Toronto, Ontario, Canada; Department of Obstetrics and Gynecology, University of Toronto, Ontario, Canada.
authors: Lisa
authors: L
authors: Allen
authors: Section of Gynecology, Hospital for Sick Children, Toronto, Ontario, Canada; Department of Obstetrics and Gynecology, University of Toronto, Ontario, Canada. Electronic address: kivess@rogers.com.
authors: Sari
authors: S
authors: Kives
mesh_terms: D015746:Abdominal Pain / Q000209:etiology; D000291:Adnexal Diseases / Q000150:complications / Q000196:embryology; D002648:Child; D005260:Female; D006801:Humans; D010048:Ovarian Cysts / Q000150:complications / Q000196:embryology; D010051:Ovarian Neoplasms / Q000150:complications / Q000196:embryology*; D013724:Teratoma / Q000150:complications / Q000196:embryology*
keywords: Dermoid cyst; Fetiform teratoma; Fetus in fetu; Mature teratoma