title: Ovarian hyperstimulation syndrome caused by pituitary gonadotroph adenoma secreting follicle-stimulating hormone.
abstract: BACKGROUND
  We report a highly exceptional case in which a gonadotroph adenoma was diagnosed in a patient with normal follicle-stimulating hormone (FSH) levels.
  
  
  METHODS
  A 30-year-old woman with a gonadotroph adenoma presented with hyperstimulation syndrome and normal FSH levels. After treatment of her adenoma she had regular menstrual cycles and subsequently conceived.
  
  
  CONCLUSIONS
  Ovarian hyperstimulation caused by a gonadotroph adenoma in a premenopausal woman with normal FSH levels is extremely rare. However, we propose that gonadotroph adenomas be considered in the differential diagnosis of patients who have this constellation of abnormalities.
authors.affiliation: Department of Obstetrics and Gynecology, MacDonald Women's Hospital, Case Western Reserve University, Cleveland, Ohio, USA. mghayuri@yahoo.com
authors.forename: Mohammadreza
authors.initials: M
authors.lastname: Ghayuri
authors.forename: James H
authors.initials: JH
authors.lastname: Liu
mesh_terms: D000236:Adenoma / Q000097:blood / Q000150:complications / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D005298:Fertility; D005640:Follicle Stimulating Hormone / Q000097:blood / Q000378:metabolism*; D006065:Gonadotropins, Pituitary / Q000097:blood / Q000378:metabolism*; D006801:Humans; D008279:Magnetic Resonance Imaging; D016471:Ovarian Hyperstimulation Syndrome / Q000097:blood / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000209:etiology; D010911:Pituitary Neoplasms / Q000097:blood / Q000150:complications / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D011247:Pregnancy; D014463:Ultrasonography
chemical_list: D006065:Gonadotropins, Pituitary; D005640:Follicle Stimulating Hormone