title: Reversal by medical treatment of endometrial hyperplasia caused by estrogen replacement therapy.
abstract: OBJECTIVE
  Endometrial hyperplasia, an entity considered a precursor to endometrial carcinoma, frequently develops in women receiving unopposed estrogens. Progestins used concomitantly with estrogens can largely prevent endometrial hyperplasia and carcinoma. However, the ability of progestins to reverse endometrial hyperplasia induced by estrogens is less well recognized. The purpose of this study was to assess the medical reversal rate of endometrial hyperplasia that develops in women receiving unopposed estrogen replacement therapy (ERT).
  
  
  METHODS
  Review of recent literature (1990-2000).
  
  
  RESULTS
  Based on four large series, more than 90% of endometrial hyperplasia caused by ERT can be reversed by medical treatment. Discontinuation of estrogen and oral administration of 10 mg/day of medroxyprogesterone acetate continuously for 6 weeks or cyclically for 3 months (2 weeks of each month) are the two regimens most widely used. Other progestins also have been shown to be effective.
  
  
  CONCLUSIONS
  Progestins are highly successful in reversing endometrial hyperplasia caused by ERT.
authors.affiliation: Department of Gynecology, Hospital Saenz-Pena, Rosario, Argentina. pfigueroa@arnet.com.ar
authors.forename: P R
authors.initials: PR
authors.lastname: Figueroa-Casas
authors.forename: B
authors.initials: B
authors.lastname: Ettinger
authors.forename: E
authors.initials: E
authors.lastname: Delgado
authors.forename: A
authors.initials: A
authors.lastname: Javkin
authors.forename: C
authors.initials: C
authors.lastname: Vieder
mesh_terms: D002986:Clinical Trials as Topic; D004334:Drug Administration Schedule; D004714:Endometrial Hyperplasia / Q000139:chemically induced* / Q000188:drug therapy*; D015914:Estrogen Replacement Therapy / Q000009:adverse effects*; D005260:Female; D006801:Humans; D017258:Medroxyprogesterone Acetate / Q000008:administration & dosage / Q000627:therapeutic use*; D045167:Progesterone Congeners / Q000008:administration & dosage / Q000627:therapeutic use*
chemical_list: D045167:Progesterone Congeners; D017258:Medroxyprogesterone Acetate