title: Ovarian stimulation and borderline ovarian tumors: a case-control study.
abstract: OBJECTIVE
  To assess the risk of borderline ovarian cancer among infertile women treated with fertility drugs.
  
  
  METHODS
  Case-control study.
  
  
  METHODS
  Nationwide data obtained from public registers and postal questionnaires.
  
  
  METHODS
  All Danish women <60 years old with borderline ovarian cancer during the period 1989-1994 and randomly selected population controls. The analysis included 231 cases and 1,721 controls.
  
  
  METHODS
  None.
  
  
  METHODS
  Influence of parity, infertility, and fertility drugs on the risk of borderline ovarian cancer after multivariate confounder control.
  
  
  RESULTS
  The odds ratio (OR) for borderline ovarian cancer among infertile untreated nulliparous women compared with fertile nulliparous women was 1.9. The OR for borderline ovarian cancer among treated nulliparous women compared with untreated infertile nulliparous women was 1.5, and the OR among treated parous women compared with untreated infertile parous women was 1.5.
  
  
  CONCLUSIONS
  Among fertile women, the difference in the risk of borderline ovarian cancer between nulliparous women and parous women was not statistically significant. Nulliparous women who were infertile and who did not receive medical treatment had a twofold higher risk of borderline ovarian cancer than fertile nulliparous women. There was no statistically significant increase in the risk of borderline ovarian cancer among nulliparous women who were treated with fertility drugs compared with nulliparous untreated infertile women or among parous women who were treated with fertility drugs compared with parous untreated infertile women.
authors.affiliation: University of Copenhagen, and Institute of Cancer Epidemiology, Danish Cancer Society.
authors.forename: B J
authors.initials: BJ
authors.lastname: Mosgaard
authors.forename: O
authors.initials: O
authors.lastname: Lidegaard
authors.forename: S K
authors.initials: SK
authors.lastname: Kjaer
authors.forename: G
authors.initials: G
authors.lastname: Schou
authors.forename: A N
authors.initials: AN
authors.lastname: Andersen
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D003718:Denmark / Q000453:epidemiology; D005260:Female; D005300:Fertility Agents, Female / Q000009:adverse effects; D006801:Humans; D007247:Infertility, Female / Q000150:complications; D008875:Middle Aged; D016017:Odds Ratio; D010051:Ovarian Neoplasms / Q000139:chemically induced / Q000453:epidemiology*; D010062:Ovulation Induction / Q000379:methods*; D010298:Parity; D015995:Prevalence; D012307:Risk Factors
chemical_list: D005300:Fertility Agents, Female