title: Anatomopathological lesions of bladder endometriosis are heterogeneous.
abstract: OBJECTIVE
  To present the anatomopathological characteristics of deep bladder endometriosis.
  
  
  METHODS
  Descriptive anatomapathological study.
  
  
  METHODS
  A university hospital department of gynecological surgery.
  
  
  METHODS
  Eleven consecutive patients complaining of pelvic pain and painful urinary functional symptoms.
  
  
  METHODS
  Laparoscopic partial cystectomy.
  
  
  METHODS
  Macroscopic and microscopic characteristics of deep bladder endometriosis lesions.
  
  
  RESULTS
  Deep bladder endometriosis lesions were extremely heterogeneous, not only in any one patient but also from one patient to another. Bladder muscularis propria presented three aspects: [1] hyperplasia of the fibromuscular tissue (4/11); [2] simple dissociation of the smooth muscle fiber bundles with no veritable "disorganization" (4/11); [3] simple thickening of the interstitial collagen network, or sclerosis (3/11). A histological adenomyotic nodule aspect was only observed in one patient (9%).
  
  
  CONCLUSIONS
  Bladder endometriosis is an enigmatic disease. No hypothesis can be proposed as a single explanation for its pathogenesis.
authors.affiliation: Assistance Publique, Hôpitaux de Paris (AP-HP), Service de Chirurgie Gynécologique, Clinique Universitaire Baudelocque, Paris, France. charles.chapron@cch.ap-hop-paris.fr
authors.forename: Charles
authors.initials: C
authors.lastname: Chapron
authors.forename: Eric
authors.initials: E
authors.lastname: Boucher
authors.forename: Arnaud
authors.initials: A
authors.lastname: Fauconnier
authors.forename: Marco
authors.initials: M
authors.lastname: Vieira
authors.forename: Jean-Bernard
authors.initials: JB
authors.lastname: Dubuisson
authors.forename: Marie-Cécile
authors.initials: MC
authors.lastname: Vacher-Lavenu
mesh_terms: D004715:Endometriosis / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D006965:Hyperplasia; D001745:Urinary Bladder Diseases / Q000473:pathology* / Q000601:surgery