title: Contemporary Management of Medium-Sized (10-20 mm) Renal Stones: A Retrospective Multicenter Observational Study.
abstract: OBJECTIVE
  To evaluate contemporary management approaches to medium-sized (10-20 mm) renal stones.
  
  
  METHODS
  A total of 935 patients treated for medium-sized renal stones (10-20 mm) between July 2012 and March 2014 were included in the study program. Contemporary minimally invasive approaches applied in the management of such stones were evaluated and compared.
  
  
  RESULTS
  The cohort consisted of 561 male (60%) and 374 female (40%) patients. Of the 935 patients with medium-sized renal calculi, 535 (57.2%) were treated with shockwave lithotripsy (SWL), 201 (21.4%) with retrograde intrarenal surgery (RIRS), 110 (11.7%) with minimally invasive percutaneous nephrolithotomy (miniperc), and the remaining 89 (11.7%) patients with micropercutaneous nephrolithotomy (microperc). In the SWL group, stones were located mostly in the pelvis (51%), while in the miniperc and microperc groups, they were located mainly in the lower pole (46%, 53%, respectively). Stone-free rates after a single session were 77.2%, 86.1%, 88.8%, and 83.6% in the SWL, RIRS, microperc, and miniperc groups, respectively. Although no serious complications (above Clavien level III) were noted in any of the groups evaluated, Clavien I to II complications were common in the miniperc group.
  
  
  CONCLUSIONS
  Although SWL is the preferred treatment option for patients with medium-sized (10-20 mm) renal stones, endourologic methods also have been found to have a significant role. Relatively lower complication rates along with higher stone-free status observed with the RIRS technique compared with percutaneous approaches have made this method a valuable option in the management of such stones in recent years.
authors.affiliation: 1 Department of Urology, Medical Faculty of Medipol University , Istanbul, Turkey .
authors.forename: Murat Can
authors.initials: MC
authors.lastname: Kiremit
authors.affiliation: 1 Department of Urology, Medical Faculty of Medipol University , Istanbul, Turkey .
authors.forename: Selcuk
authors.initials: S
authors.lastname: Guven
authors.affiliation: 2 Department of Urology, Kartal Education and Research Hospital , Istanbul, Turkey .
authors.forename: Kemal
authors.initials: K
authors.lastname: Sarica
authors.affiliation: 3 Department of Urology, Necmettin Erbakan University , Meram Medical Faculty, Konya, Turkey .
authors.forename: Ahmet
authors.initials: A
authors.lastname: Ozturk
authors.affiliation: 4 Department of Urology, Medical Faculty of Mevlana University , Konya, Turkey .
authors.forename: Ibrahim
authors.initials: I
authors.lastname: Buldu
authors.affiliation: 2 Department of Urology, Kartal Education and Research Hospital , Istanbul, Turkey .
authors.forename: Alper
authors.initials: A
authors.lastname: Kafkasli
authors.affiliation: 3 Department of Urology, Necmettin Erbakan University , Meram Medical Faculty, Konya, Turkey .
authors.forename: Mehmet
authors.initials: M
authors.lastname: Balasar
authors.affiliation: 4 Department of Urology, Medical Faculty of Mevlana University , Konya, Turkey .
authors.forename: Okan
authors.initials: O
authors.lastname: Istanbulluoglu
authors.affiliation: 1 Department of Urology, Medical Faculty of Medipol University , Istanbul, Turkey .
authors.forename: Rahim
authors.initials: R
authors.lastname: Horuz
authors.affiliation: 2 Department of Urology, Kartal Education and Research Hospital , Istanbul, Turkey .
authors.forename: Cihangir Ali
authors.initials: CA
authors.lastname: Cetinel
authors.affiliation: 3 Department of Urology, Necmettin Erbakan University , Meram Medical Faculty, Konya, Turkey .
authors.forename: Abdulkadir
authors.initials: A
authors.lastname: Kandemir
authors.affiliation: 1 Department of Urology, Medical Faculty of Medipol University , Istanbul, Turkey .
authors.forename: Selami
authors.initials: S
authors.lastname: Albayrak
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000601:surgery*; D008096:Lithotripsy / Q000379:methods / Q000706:statistics & numerical data; D008297:Male; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures / Q000706:statistics & numerical data; D009403:Nephrostomy, Percutaneous / Q000379:methods* / Q000706:statistics & numerical data; D017063:Outcome Assessment, Health Care; D011183:Postoperative Complications; D012189:Retrospective Studies