title: Treatment of Moderate Sized Renal Pelvis Calculi: Stone Clearance Time Comparison of Extracorporeal Shock Wave Lithotripsy and Retrograde Intrarenal Surgery.
abstract: OBJECTIVE
  To compare the stone clearance times in patients undergoing extracorporeal shock wave lithotripsy (SWL) or retrograde intrarenal surgery (RIRS) for single radiopaque renal pelvis stones 10-20 mm in size. The results of this study may guide urologists and patients and aid in selecting the optimal preoperative treatment.
  
  
  METHODS
  Between January 2013 and February 2015, we conducted a retrospective study and collected data from 333 patients treated with SWL (n = 172) or RIRS (n = 161). We included successfully treated patients with a single radiopaque renal pelvis stone 10-20 mm in size to calculate stone clearance times.
  
  
  RESULTS
  The average stone size for the SWL group was 14.62 &plusmn; 2.58 mm and 14.91 &plusmn; 2.92 mm for the RIRS group. The mean Hounsfield unit (HU) of the patients was 585.40 &plusmn; 158.39 HU in the SWL group and 567.74 &plusmn; 186.85 HU in the RIRS group. Following full fragmentation, the mean stone clearance time was 26.55 &plusmn; 9.71 days in the SWL group and 11.59 &plusmn; 7.01 days in the RIRS group (P &lt; .001).
  
  
  CONCLUSIONS
  One of the most overlooked parameters in urinary stone treatments is stone clearance. We believe this study will shed light for those who aim to conduct larger randomized prospective studies.&nbsp.
authors.affiliation: Department of Urology, Ministry of Health, Numune Teaching and Research Hospital, Adana, Turkey. hakanercil@yahoo.com.
authors.forename: Hakan
authors.initials: H
authors.lastname: Ercil
authors.affiliation: Department of Urology, Ministry of Health, Numune Teaching and Research Hospital, Adana, Turkey.
authors.forename: Ergun
authors.initials: E
authors.lastname: Alma
authors.affiliation: Department of Urology, Ministry of Health, Abdurrahman Yurtarslan Onkoloji Teaching and Research Hospital, Ankara, Turkey.
authors.forename: Okan
authors.initials: O
authors.lastname: Bas
authors.affiliation: Department of Urology, Ministry of Health, Numune Teaching and Research Hospital, Adana, Turkey.
authors.forename: Nevzat Can
authors.initials: NC
authors.lastname: Sener
authors.affiliation: Department of Urology, Ministry of Health, Numune Teaching and Research Hospital, Adana, Turkey.
authors.forename: Ediz
authors.initials: E
authors.lastname: Vuruskan
authors.affiliation: Department of Urology, Ministry of Health, Numune Teaching and Research Hospital, Adana, Turkey.
authors.forename: Faruk
authors.initials: F
authors.lastname: Kuyucu
authors.affiliation: Department of Urology, Ministry of Health, Numune Teaching and Research Hospital, Adana, Turkey.
authors.forename: Umut
authors.initials: U
authors.lastname: Unal
authors.affiliation: Department of Urology, Baskent University Adana Medical and Research Center, Adana, Turkey.
authors.forename: Mehmet Resit
authors.initials: MR
authors.lastname: Gören
authors.affiliation: Department of Urology, Ministry of Health, Numune Teaching and Research Hospital, Adana, Turkey.
authors.forename: Yalcin
authors.initials: Y
authors.lastname: Evliyaoglu
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000175:diagnosis / Q000628:therapy*; D007682:Kidney Pelvis / Q000000981:diagnostic imaging*; D008096:Lithotripsy / Q000379:methods*; D008297:Male; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D014567:Urography; D013520:Urologic Surgical Procedures / Q000379:methods*