title: Pregnancy in a patient with a displaced levonorgestrel-releasing intrauterine system: a case report.
abstract: We report the case of a 39-year-old woman who became pregnant despite a levonorgestrel-releasing intrauterine system (LNG-IUS), which was inserted 40 months before the pregnancy was detected. When a Caesarean section was performed, the LNG-IUS was found within the omentum majus. It has been reported, that displaced LNG-IUS can cause amenorrhea and high plasma levels of LNG in affected women, probably due to the higher resorptive capacity of the peritoneum, recommending a removal of the displaced LNG-IUS. Our case report demonstrates that a dislocated LNG-IUS does not necessary has the ability to suppress ovulation and therefore pregnancy. Therefore, every gynaecologist should be aware of a pregnancy despite a dislocated LNG-IUS.
authors.affiliation: Department of Gynecology and Obstetrics, Ludwig-Maximilians-University Munich, Campus Grosshadern, Marchioninistrasse 15, 81377, Munich, Germany. Helen.Budiman@med.uni-muenchen.de
authors.forename: Helen
authors.initials: H
authors.lastname: Budiman
authors.forename: Carolin
authors.initials: C
authors.lastname: Kümper
authors.forename: Ioannis
authors.initials: I
authors.lastname: Mylonas
authors.forename: Christian J
authors.initials: CJ
authors.lastname: Thaler
authors.forename: Klaus
authors.initials: K
authors.lastname: Friese
authors.forename: Ernst R
authors.initials: ER
authors.lastname: Weissenbacher
mesh_terms: D000328:Adult; D002585:Cesarean Section; D003271:Contraceptive Agents, Female; D005260:Female; D005548:Foreign-Body Migration; D006801:Humans; D033162:Incidental Findings; D007231:Infant, Newborn; D007436:Intrauterine Devices, Medicated; D016912:Levonorgestrel; D009852:Omentum; D011247:Pregnancy; D011256:Pregnancy Outcome; D049168:Pregnancy, Unplanned
chemical_list: D003271:Contraceptive Agents, Female; D016912:Levonorgestrel