title: Ovarian cysts and cyclic hormone replacement therapy: is there an association?
abstract: OBJECTIVE
  To evaluate whether there may be an association between postmenopausal ovarian cysts and hormone replacement therapy.
  
  
  METHODS
  The study comprised 564 consecutive, asymptomatic, postmenopausal women who were referred for routine, transvaginal ultrasound examinations between January 1 and December 31, 1995. Various demographic and ultrasonographic parameters were recorded on a prospectively-created, computerized data base.
  
  
  RESULTS
  There was no difference in the prevalence of ovarian cysts with or without hormone replacement therapy (10.5% vs. 12.5%, respectively). However, in the subgroup of early postmenopausal women (40-55 years), the use of hormone replacement therapy was associated with a significantly reduced prevalence of ovarian cysts (10.4% vs. 28.6%; p < 0.05).
  
  
  CONCLUSIONS
  Hormone replacement therapy is associated with a reduced prevalence of ovarian cysts in early postmenopause.
authors.affiliation: Department of Obstetrics and Gynecology, Rabin Medical Center (Golda Campus), Petah-Tiqva, Israel.
authors.forename: I
authors.initials: I
authors.lastname: Bar-Hava
authors.forename: R
authors.initials: R
authors.lastname: Orvieto
authors.forename: D
authors.initials: D
authors.lastname: Vardimon
authors.forename: Y
authors.initials: Y
authors.lastname: Manor
authors.forename: A
authors.initials: A
authors.lastname: Weissman
authors.forename: R
authors.initials: R
authors.lastname: Nelinger
authors.forename: Z
authors.initials: Z
authors.lastname: Ben-Rafael
mesh_terms: D000704:Analysis of Variance; D003430:Cross-Sectional Studies; D015914:Estrogen Replacement Therapy; D005260:Female; D006801:Humans; D007557:Israel / Q000453:epidemiology; D008875:Middle Aged; D015999:Multivariate Analysis; D009367:Neoplasm Staging; D010048:Ovarian Cysts / Q000000981:diagnostic imaging / Q000453:epidemiology* / Q000209:etiology; D010051:Ovarian Neoplasms / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D010298:Parity; D017698:Postmenopause; D015995:Prevalence; D011446:Prospective Studies; D014463:Ultrasonography