title: [Urinary complications of Erdheim-Chester disease].
abstract: BACKGROUND
  Erdeheim-Chester disease is an uncommon histiocytosis. Fifty-nine cases have been reported in the literature. Bone lesions are usually inaugural followed by multiorgan involvement combining bone disease, orbital infiltration, diabetes insipidis and retroperitoneal infiltration.
  
  
  METHODS
  A 53-year-old man had Erdheim-Chester disease which progressed over 11 years. The patient developed extrinsic obstruction of the upper urinary tract. This unusual complication of Erdheim-Chester disease raised a difficult therapeutic problem as percutaneous drainage was impossible. The patient was treated with an endoprothesis allowing urine derivation. Surgical ureterolysis was avoided.
  
  
  CONCLUSIONS
  Data in the literature favor use of minimally invasive endourological treatment for patients with urinary tract complications of Erdheim-Chester disease.
authors.affiliation: Service d'Urologie, hôpital Salvator, Marseille.
authors.forename: G
authors.initials: G
authors.lastname: Karsenty
authors.forename: M
authors.initials: M
authors.lastname: André
authors.forename: D
authors.initials: D
authors.lastname: Rossi
mesh_terms: D015614:Histiocytosis / Q000150:complications*; D006801:Humans; D008297:Male; D019060:Minimally Invasive Surgical Procedures; D013577:Syndrome; D014517:Ureteral Obstruction / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D016055:Urinary Retention / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D014567:Urography