title: Use of the levonorgestrel-releasing intrauterine system in women with endometriosis, chronic pelvic pain and dysmenorrhea.
abstract: OBJECTIVE
  This report is a review of the medical literature on the use of the levonorgestrel-releasing intrauterine system (LNG-IUS) in women with endometriosis, adenomyosis, cyclic pelvic pain and dysmenorrhea.
  
  
  METHODS
  A review was carried out using the MEDLINE and EMBASE databases to evaluate the use of LNG-IUS in women with endometriosis and adenomyosis.
  
  
  RESULTS
  Nine studies were identified, only two of which were randomized clinical trials. One compared the insertion of LNG-IUS after surgery with expectant conduct and the other compared the use of the device with a GnRH analogue (GnRH-a). All studies reported an improvement in pelvic pain and dysmenorrhea, and a reduction in menstrual bleeding. One study found an improvement in the staging of the disease at 6 months of use, and the studies that evaluated the use of LNG-IUS in women with adenomyosis reported a reduction in uterine volume. Furthermore, the only study in which women were followed up for 3 years after insertion found improvement in pelvic pain at 12 months of use. However, there was no improvement after that period.
  
  
  CONCLUSIONS
  The use of LNG-IUS is an alternative for the medical treatment of women suffering from endometriosis, adenomyosis, chronic pelvic pain or dysmenorrhea, but experience is limited and long-term studies are necessary to reach definitive conclusions. However, for women who do not wish to become pregnant, this device offers the possibility of at least 5 years of treatment following one single intervention.
authors.affiliation: Human Reproduction Unit, Department of Obstetrics and Gynecology, School of Medicine, Universidade Estadual de Campinas (UNICAMP), 13084-971, Campinas, SP, Brazil. bahamond@caism.unicamp.br
authors.forename: Luis
authors.initials: L
authors.lastname: Bahamondes
authors.forename: Carlos A
authors.initials: CA
authors.lastname: Petta
authors.forename: Arlete
authors.initials: A
authors.lastname: Fernandes
authors.forename: Ilza
authors.initials: I
authors.lastname: Monteiro
mesh_terms: D004412:Dysmenorrhea / Q000188:drug therapy*; D004715:Endometriosis / Q000188:drug therapy*; D005260:Female; D006801:Humans; D007436:Intrauterine Devices, Medicated; D016912:Levonorgestrel / Q000008:administration & dosage*; D017699:Pelvic Pain / Q000188:drug therapy; D011372:Progestins / Q000008:administration & dosage*; D016032:Randomized Controlled Trials as Topic
chemical_list: D011372:Progestins; D016912:Levonorgestrel