title: Detection of a microgonadotropinoma by magnetic resonance imaging performed because of excellent response to controlled ovarian hyperstimulation despite elevated day 3 FSH.
abstract: OBJECTIVE
  To determine if a better response than anticipated to controlled ovarian stimulation in a woman assumed to have diminished oocyte reserve based on an increased day 3 serum follicle stimulating hormone (FSH) level, could be related to a gonadotropinoma.
  
  
  METHODS
  Magnetic resonance imaging (MRI) with and without gadolinium contrast was used in a woman who made 21 mature oocytes despite a history of day 3 serum FSH as high as 20 mIU/mL.
  
  
  RESULTS
  A pituitary microgonadotropinoma was detected.
  
  
  CONCLUSIONS
  The presence of a better response than anticipated to controlled ovarian hyperstimulation (COH) with exogenous gonadotropins despite an increase in day 3 serum FSH should prompt a search for a possible gonadotropinoma.
authors.forename: J H
authors.initials: JH
authors.lastname: Check
authors.forename: W
authors.initials: W
authors.lastname: Dowland
mesh_terms: D000236:Adenoma / Q000175:diagnosis* / Q000378:metabolism; D000328:Adult; D005260:Female; D005307:Fertilization in Vitro; D005640:Follicle Stimulating Hormone / Q000097:blood / Q000378:metabolism*; D006801:Humans; D008279:Magnetic Resonance Imaging; D009865:Oocytes; D010062:Ovulation Induction / Q000379:methods*; D010911:Pituitary Neoplasms / Q000175:diagnosis* / Q000378:metabolism
chemical_list: D005640:Follicle Stimulating Hormone