title: [Secondary appearance of a carcinoma in an excluded native bladder: Report of three cases].
abstract: BACKGROUND
  The management of congenital urological malformations is sometimes complex and may require urinary diversion. Cystectomy is usually performed, but sometimes the bladder is left in place due to the presence of a pelvic cloaca and the morbidity related to this type of surgery.
  
  
  METHODS
  The authors report three cases of patients treated by urinary diversion for a congenital malformation without primary resection of the bladder
  
  
  RESULTS
  In the absence of any infectious complications, bladder carcinoma on an excluded native bladder was diagnosed at the age of 3 years, 4 years and 38 years, respectively. Histological examination showed transitional cell carcinoma in two cases and gastrointestinal-type adenocarcinoma of the bladder in 1 case.
  
  
  CONCLUSIONS
  The risk of secondary development of carcinoma in an excluded bladder during management of (congenital urological malformations is not negligible. Primary cystectomy therefore appears to be preferable. In the presence of a pelvic cloaca making this surgical resection unreasonable, it appears important to exclude the formation of a pyocyst by annual abdominal ultrasound. The authors also recommend cystoscopy and urine cytology with lavage to detect degeneration of the bladder mucosa.
authors.affiliation: Service d'Urologie, Hôpital Charles Nicolle, Rouen, France.
authors.forename: Latifa
authors.initials: L
authors.lastname: Rouache
authors.forename: Mohamed
authors.initials: M
authors.lastname: Cherif
authors.forename: Yves
authors.initials: Y
authors.lastname: Tanneau
authors.forename: Françoise
authors.initials: F
authors.lastname: Gobet
authors.forename: Christian
authors.initials: C
authors.lastname: Pfister
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis* / Q000601:surgery; D000328:Adult; D002295:Carcinoma, Transitional Cell / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D001743:Urinary Bladder / Q000002:abnormalities*; D001749:Urinary Bladder Neoplasms / Q000175:diagnosis* / Q000601:surgery; D014547:Urinary Diversion