title: Cesarean scar endometriosis. A report of two cases.
abstract: BACKGROUND
  Extrapelvic endometriosis is a fairly rare phenomenon. The majority of extrapelvic endometriosis involves scar tissue following obstetric/gynecologic procedures. Cesarean section scar endometriosis may be more common than reflected in the literature and has a distinct presentation and treatment.
  
  
  METHODS
  Two patients with histories of cesarean sections presented with a painful, enlarging mass involving the cesarean section scar. The pain was cyclic and strongest just prior to menstruation. Both patients were treated with surgical excision, and both specimens had endometriosis confirmed by histopathology.
  
  
  CONCLUSIONS
  Endometriosis involving a cesarean section scar may be more common than thought. Patients typically present with a history of cesarean section or other obstetric/gynecologic surgery and are found to have a mass involving the scar, with symptoms intensifying prior to each menstrual cycle. Surgical excision is the treatment of choice, providing both diagnostic and therapeutic intervention.
authors.affiliation: Department of Obstetrics and Gynecology, Keesler United States Air Force Medical Center, Keesler Air Force Base, 301 Fisher Street, Room 1A-132, MS 39534, USA.
authors.forename: Lon
authors.initials: L
authors.lastname: Taff
authors.forename: Stephen
authors.initials: S
authors.lastname: Jones
mesh_terms: D000328:Adult; D001707:Biopsy, Needle; D002585:Cesarean Section / Q000009:adverse effects*; D002921:Cicatrix / Q000473:pathology*; D004715:Endometriosis / Q000209:etiology* / Q000473:pathology* / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007150:Immunohistochemistry; D012871:Skin Diseases / Q000209:etiology* / Q000473:pathology* / Q000601:surgery; D016896:Treatment Outcome