title: [The Allium ureteral stent in the management of ureteral stenoses, a retrospective, multicenter study].
abstract: OBJECTIVE
  To evaluate the performance of the Allium ureteral stent in the management of patients initially treated with double J stents for the long-term treatment of stenoses.
  
  
  METHODS
  We performed a retrospective multicenter study involving 36 patients who received 37 Allium ureteral stents (metallic 24 Fr) between September 2011 and January 2015 in one of three French teaching hospital centers. The mean age of the patients was 63.8 years (min-max: 33-88 years) and most were women (70%). Of these patients, 5.6% had ureteral fistulae and 94.4% stenoses. Mean stenosis length was 4.15cm (min-max: 0.5-12cm). All analyses were two-tailed with an alpha risk of 0.05. Statistical significance was set at P<0.05. Results were expressed as hazard ratios (HR) with 95% confidence intervals and P-values.
  
  
  RESULTS
  During the follow-up period, 37% of the stents were removed due to migration (complication occurring in 18.9% of the studied population), infection (10.8%) or intolerance (8.1%). The other stents were removed after 1 year. Clinical effectiveness, defined as a lack of stenosis or fistula recurrence, was 52.8% after a mean follow-up of 7.1 months.
  
  
  CONCLUSIONS
  Clinically effective in more than 50% of cases, the Allium ureteral stent appears to be an alternative to indwelling double J stents.
  
  
  METHODS
  4.
authors.affiliation: Centre hospitalier universitaire de Clermont-Ferrand, 28, place Henry-Dunand, 63000 Clermont-Ferrand, France. Electronic address: mguandalino@chu-clermontferrand.fr.
authors.forename: M
authors.initials: M
authors.lastname: Guandalino
authors.affiliation: Centre hospitalier universitaire Nîmes, rue du Pr Robert-Débré, 30029 Nîmes, France. Electronic address: stephane.DROUPY@chu-nimes.fr.
authors.forename: S
authors.initials: S
authors.lastname: Droupy
authors.affiliation: Centre hospitalier universitaire Lyon Sud, 165, chemin du Grand-Revoyet, 69310 Pierre-Benite, France. Electronic address: alain.ruffion@chu-lyon.fr.
authors.forename: A
authors.initials: A
authors.lastname: Ruffion
authors.affiliation: Centre hospitalier universitaire Grenoble, avenue Maquis-du-Grésivaudan, 38700 La Tronche, France. Electronic address: GFiard@chu-grenoble.fr.
authors.forename: G
authors.initials: G
authors.lastname: Fiard
authors.affiliation: Centre hospitalier universitaire Nîmes, rue du Pr Robert-Débré, 30029 Nîmes, France. Electronic address: marinehutin@hotmail.fr.
authors.forename: M
authors.initials: M
authors.lastname: Hutin
authors.affiliation: Centre hospitalier universitaire Grenoble, avenue Maquis-du-Grésivaudan, 38700 La Tronche, France. Electronic address: delph.poncet@orange.fr.
authors.forename: D
authors.initials: D
authors.lastname: Poncet
authors.affiliation: Centre hospitalier universitaire de Clermont-Ferrand, 28, place Henry-Dunand, 63000 Clermont-Ferrand, France. Electronic address: bpereira@chu-clermontferrand.fr.
authors.forename: B
authors.initials: B
authors.lastname: Pereira
authors.affiliation: Centre hospitalier universitaire Lyon Sud, 165, chemin du Grand-Revoyet, 69310 Pierre-Benite, France. Electronic address: philippe.paparel@chu-lyon.fr.
authors.forename: P
authors.initials: P
authors.lastname: Paparel
authors.affiliation: Centre hospitalier universitaire Lyon Sud, 165, chemin du Grand-Revoyet, 69310 Pierre-Benite, France. Electronic address: jean-etienne.terrier01@chu-lyon.fr.
authors.forename: J-E
authors.initials: JE
authors.lastname: Terrier
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003251:Constriction, Pathologic; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D012189:Retrospective Studies; D015607:Stents; D014513:Ureter / Q000473:pathology* / Q000601:surgery*; D014517:Ureteral Obstruction / Q000601:surgery*
keywords: Fistula; Fistule; Stenosis; Stent urétéral; Sténose; Ureter; Ureteral stent; Uretère