title: A case of unusual course of adolescent menorrhagia: decidual cast as a side effect of treatment.
abstract: OBJECTIVE
  To present an unusual side effect of therapy for adolescent menorrhagia, with commentary on management options.
  
  
  METHODS
  Case report.
  
  
  METHODS
  Tertiary gynecologic center.
  
  
  METHODS
  A 13-year-old girl presenting with profuse uterine bleeding.
  
  
  METHODS
  Dysfunctional uterine bleeding was diagnosed, and pharmacologic therapy with a monophasic oral contraceptive (OC) pill was introduced.
  
  
  METHODS
  A large decidual cast occurred during treatment.
  
  
  RESULTS
  After finishing therapy with OC followed by three cycles of cyclic progestogen, the patient experienced regular menses.
  
  
  CONCLUSIONS
  A large decidual cast may occur during treatment of adolescent menorrhagia with OCs; patients should be informed about this possibility, to reduce stress connected with the appearance of this side effect.
authors.affiliation: Department of Human Anatomy, Medical University of Lublin, Lublin, Poland. anna.torres@am.lublin.pl
authors.forename: Anna
authors.initials: A
authors.lastname: Torres
authors.forename: Ewa
authors.initials: E
authors.lastname: Baszak-Radomańska
authors.forename: Kamil
authors.initials: K
authors.lastname: Torres
authors.forename: Tomasz
authors.initials: T
authors.lastname: Paszkowski
authors.forename: Grzegorz J
authors.initials: GJ
authors.lastname: Staśkiewicz
authors.forename: Ewa
authors.initials: E
authors.lastname: Wozniakowska
mesh_terms: D000293:Adolescent; D002828:Choristoma / Q000139:chemically induced* / Q000473:pathology; D003278:Contraceptives, Oral, Hormonal / Q000009:adverse effects / Q000627:therapeutic use; D003656:Decidua; D005260:Female; D006801:Humans; D008595:Menorrhagia / Q000188:drug therapy*; D011372:Progestins / Q000008:administration & dosage / Q000009:adverse effects*; D014591:Uterine Diseases / Q000139:chemically induced* / Q000473:pathology
chemical_list: D003278:Contraceptives, Oral, Hormonal; D011372:Progestins