title: Diagnosis and management of an immature teratoma during ovarian stimulation: a case report.
abstract: BACKGROUND
  The discovery of a mature teratoma (dermoid cyst) of the ovary during ovarian stimulation is not a rare event. Conversely, we could not find any reported cases of immature teratoma in such a situation. Clinical and ultrasound arguments for this immature form are scarcely or poorly evaluated.
  
  
  METHODS
  We describe the case of a 31-year-old Caucasian woman with primary infertility, who developed an immature teratoma during an in vitro fertilization ovarian stimulation cycle.
  
  
  CONCLUSIONS
  Ultrasound signs of an atypical cyst during ovarian stimulation allowed us to adopt a careful medical attitude and to adapt the required surgical oncological treatment.
authors: Obstetrics, Gynecology and Reproductive Medicine Department, Bichat Claude Bernard University Hospital, 46, rue Henri-Huchard, 75018 Paris, France. chadi.yazbeck@bch.aphp.fr.
authors: Nathalie
authors: N
authors: Douay-Hauser
authors: Martin
authors: M
authors: Koskas
authors: Francine
authors: F
authors: Walker
authors: Dominique
authors: D
authors: Luton
authors: Chadi
authors: C
authors: Yazbeck