title: [Flexible ureteroscopy in the treatment of kidney stone between 2 and 3 cm].
abstract: OBJECTIVE
  Our aim was to evaluate the outcome of flexible ureteroscopy (F-URS) with Holmium Laser as a minimal invasive procedure for kidney stone between 2 and 3 cm in diameter.
  
  
  METHODS
  We prospectively evaluated 101 patients (103 kidney units) with kidney stone between 2 and 3 cm, who underwent flexible ureteroscopy (F-URS) with Holmium Laser. Patient age, sex, body mass index (BMI), stone size, stone composition, associated lower calyx stone, prestenting, congenital abnormalities, urological history, operating time and complications were evaluated. The outcome was determined at 4 weeks on plain radiograph (KUB) and noncontrast CT scan (NCCT) or by endoscopic second look if needed. Ureteroscopy success rate was defined as stone free (SF) or remaining fragments (RF) less than 3 mm.
  
  
  RESULTS
  After F-URS session we obtained a stone free status in 35 kidney units (34%), residual fragment less than 3mm in 30 kidney units (29.1%) and 38 kidney units (36.9%) with significant residual fragment. F-URS success rate was 89.3% and 97.1% after second and third session, respectively.
  
  
  CONCLUSIONS
  F-URS with Holmium Laser is a very effective and safe technique in treating kidney stone. This technique should be proposed to patient with kidney stone between 2 and 3 cm as one of the treatment modalities, F-URS offers excellent results, low rate of complications and short hospital stay. Patients should be informed about staged therapy.
authors.affiliation: Service d'urologie, CHU Tenon, université de Pierre-et-Marie-Curie, Paris VI, 4, rue de la Chine, 75970 Paris cedex, France.
authors.forename: M A
authors.initials: MA
authors.lastname: Ben Saddik
authors.forename: S
authors.initials: S
authors.lastname: Al-Qahtani Sejiny
authors.forename: M
authors.initials: M
authors.lastname: Ndoye
authors.forename: S
authors.initials: S
authors.lastname: Gil-Diez-de-Medina
authors.forename: B
authors.initials: B
authors.lastname: Merlet
authors.forename: A
authors.initials: A
authors.lastname: Thomas
authors.forename: F
authors.initials: F
authors.lastname: Haab
authors.forename: O
authors.initials: O
authors.lastname: Traxer
mesh_terms: D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000473:pathology* / Q000601:surgery*; D053844:Lasers, Solid-State / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D018666:Ureteroscopy