title: [Retrovesical hydatid cyst: diagnosis and treatment in 8 cases].
abstract: BACKGROUND
  Hydatid cyst represents a real public health problem in Tunisia. Retrovesical hydatid cyst is rare (6% to 7%). It is considered to be an "aberrant" or "ectopic" site defined by the development of the parasite in the subvesical and retrovesical fat.
  
  
  METHODS
  From 1988 to 2001, 8 patients with retrovesical hydatid cyst were hospitalised and operated in our Urology department at Sahloul Hospital in Sousse, Tunisia. The mean age of our patients was 41 years (range: 8 to 75 years). Signs of bladder irritation were the most frequent presenting complaint. Only one case was diagnosed on computed tomography performed for assessment of lumbar contusion. Total resection of the cyst and pericystic tissues was performed in 5 patients, with partial resection in the other cases.
  
  
  RESULTS
  The postoperative course was uneventful and only one patient developed suppuration of the residual cavity, which responded favourably to antibiotics and ultrasound-guided drainage.
  
  
  CONCLUSIONS
  The retrovesical site of hydatid cyst is rare and treatment is essentially surgical.
authors.affiliation: Service de Chirurgie Urologique, Hôpital Sahloul, Sousse, Tunisie. karimkhouadja@yahoo.fr
authors.forename: Mohamed Karim
authors.initials: MK
authors.lastname: Khouaja
authors.forename: Nabil
authors.initials: N
authors.lastname: Ben Sorba
authors.forename: Nidhal
authors.initials: N
authors.lastname: Haddad
authors.forename: Ali Tahar
authors.initials: AT
authors.lastname: Mosbah
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D004443:Echinococcosis / Q000175:diagnosis / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D001743:Urinary Bladder