title: [Encrusted cystitis. Is it always alkaline?].
abstract: OBJECTIVE
  To report on our series of encrusted cystopathy.
  
  
  METHODS
  The clinical records of 37 patients (25 males, 67%; 12 females, 33%) with a histological diagnosis of encrusted cystopathy were reviewed.
  
  
  RESULTS
  Only 11 patients (29.7%) met the classical criteria for alkaline encrusted cystitis. They had an initial or predisposing bladder lesion, irritative symptoms, passed calcareous material, a demonstrated or suspected urinary infection from ureolytic pathogens and alkaline urine. The remaining 26 patients (70.2%) with histologically demonstrated encrustations on the bladder wall did not meet the foregoing criteria. Fifty-seven percent of the patients had a previous history of bladder tumor resection and treatment with intravesical instillations.
  
  
  CONCLUSIONS
  Alkaline encrusted cystopathy is an uncommon condition. Encrusting cystopathy can develop in the absence of ureolytic pathogens or alkaline urine. The bladder lesion on which the encrusting cystopathy is established, is determinant in the subsequent evolution.
authors.affiliation: Fundación Puigvert, Barcelona, España.
authors.forename: J
authors.initials: J
authors.lastname: Huguet Pérez
authors.forename: J
authors.initials: J
authors.lastname: Salvador Bayarri
authors.forename: J
authors.initials: J
authors.lastname: Vicente Rodríguez
mesh_terms: D000137:Acid-Base Imbalance / Q000150:complications*; D000293:Adolescent; D000328:Adult; D000368:Aged; D002114:Calcinosis / Q000150:complications / Q000378:metabolism*; D002648:Child; D002675:Child, Preschool; D003556:Cystitis / Q000150:complications / Q000378:metabolism*; D005260:Female; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies