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Advances in Urology
Volume 2014 (2014), Article ID 314954, 5 pages
Clinical Study

Effectiveness of Flexible Ureterorenoscopy and Laser Lithotripsy for Multiple Unilateral Intrarenal Stones Smaller Than 2 cm

1Department of Urology, Memorial Sisli Hospital, Okmeydanı, Şişli, 34385 Istanbul, Turkey
2Department of Anesthesiology, Memorial Sisli Hospital, Okmeydanı, Şişli, 34385 Istanbul, Turkey
3Department of Urology, Memorial Atasehir Hospital, Atasehir, 34758 Istanbul, Turkey

Received 5 February 2014; Revised 5 May 2014; Accepted 28 May 2014; Published 12 June 2014

Academic Editor: M. Hammad Ather

Copyright © 2014 Erdal Alkan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Purpose. To evaluate the safety and efficacy of RIRS for the treatment of multiple unilateral intrarenal stones smaller than 20 mm. Methods. Between March 2007 and April 2013, patients with multiple intrarenal stones smaller than 20 mm were treated with RIRS and evaluated retrospectively. Each patient was evaluated for stone number, stone burden (cumulative stone length), operative time, SFRs, and complications. Results. 173 intrarenal stones in 48 patients were included. Mean age, mean number of stones per patient, mean stone burden, and mean operative time were years (23–63), (2–18),  mm (12–45), and minutes (30–130), respectively. The overall SFR was 91.7%. SFRs for patients with a stone burden less and greater than 20 mm were 100% (23/23) and 84% (21/25), respectively (, ). Complications occurred in six (12.5%–6/48) patients, including urinary tract infection or high-grade fever >38.5°C in three cases, prolonged hematuria in two cases, and ureteral perforation in one case, all of whom were treated conservatively. No major complications occurred. Conclusions. RIRS is an effective treatment option in patients with multiple unilateral intrarenal stones especially when the total stone burden is less than 20 mm.