title: Mixed clear cell and endometrioid carcinoma arising in parietal endometriosis.
abstract: OBJECTIVE
  We report a case of a mixed clear cell and endometrioid carcinoma arising in parietal endometriosis.
  
  
  METHODS
  A 46-year-old woman presented a second recurrence of parietal endometriosis. An extensive surgical resection of the tumor was then carried out.
  
  
  RESULTS
  Histological analysis revealed heterogeneous tissues including clear cell and endometrioid carcinoma fields arising from a large benign endometriosis lesion. Despite chemotherapy, the patient died 6 months after the diagnosis.
  
  
  CONCLUSIONS
  Clear cell carcinoma and endometrioid carcinoma have been rarely found in parietal endometriosis. Clinicians should learn to suspect a cancerous transformation of a parietal endometriosis, when rapid recurrence and extensive development are observed.
authors.affiliation: Department of Gynecology and Obstetrics, University Hospital, Rouen, France.
authors.forename: Kais
authors.initials: K
authors.lastname: Razzouk
authors.forename: Horace
authors.initials: H
authors.lastname: Roman
authors.forename: Isabella
authors.initials: I
authors.lastname: Chanavaz-Lacheray
authors.forename: Michel
authors.initials: M
authors.lastname: Scotté
authors.forename: Eric
authors.initials: E
authors.lastname: Verspyck
authors.forename: Loïc
authors.initials: L
authors.lastname: Marpeau
mesh_terms: D018262:Adenocarcinoma, Clear Cell / Q000473:pathology / Q000601:surgery*; D018269:Carcinoma, Endometrioid / Q000473:pathology / Q000601:surgery*; D002585:Cesarean Section / Q000009:adverse effects*; D002921:Cicatrix / Q000150:complications; D004715:Endometriosis / Q000473:pathology / Q000601:surgery*; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D008875:Middle Aged