title: Is There A Difference Between Presence of Single Stone And Multiple Stones in Flexible Ureterorenoscopy And Laser Lithotripsy For Renal Stone Burden < 300mm2 ?
abstract: In this study, we aim to evaluate and compare the effectiveness of flexible ureterorenoscopy (f-URS) for solitary and multiple renal stones with < 300 mm2 stone burden. Patients' charts who treated with f-URS for kidney stone between January 2010 and June 2015 were reviewed, retrospectively. Patients with solitary kidney stones (n:111) were enrolled in group 1. We selected 111 patients with multiple kidney stones to serve as the control group and the patients were matched at a 1:1 ratio with respect to the patient's age, gender, body mass index and stone burden. Additionally, patients with multiple stones were divided into two groups according to the presence or abscence of lower pole stones. Stone free status was accepted as complete stone clearence and presence of residual fragments < 2 mm. According to the study design; age, stone burden, body mass index were comparable between groups. The mean operation time was longer in group 2 (p= 0.229). However, the mean fluoroscopy screening time in group 1 and in group 2 was 2.1±1.7 and 2.6±1.5 min, respectively and significantly longer in patients with multiple renal stones (P=0.043). The stone-free status was significantly higher in patients with solitary renal stones after a single session procedure (p=0.02). After third month follow up, overall success rate was 92.7% in Group 1 and 86.4% in Group 2. Our study revealed that F-URS achieved better stone free status in solitary renal stones < 300 mm2. However, outcomes of F-URS were acceptable in patients with multiple stones.
authors: Department of Urology, Haseki Training and Research Hospital, Istanbul, Turkey.
authors: Faruk
authors: F
authors: Ozgor
authors: Department of Urology, Haseki Training and Research Hospital, Istanbul, Turkey.
authors: Onur
authors: O
authors: Kucuktopcu
authors: Department of Urology, Haseki Training and Research Hospital, Istanbul, Turkey.
authors: Burak
authors: B
authors: Ucpinar
authors: Department of Urology, Haseki Training and Research Hospital, Istanbul, Turkey.
authors: Zafer Gokhan
authors: ZG
authors: Gurbuz
authors: Department of Urology, Haseki Training and Research Hospital, Istanbul, Turkey.
authors: Omer
authors: O
authors: Sarilar
authors: Department of Urology, Haseki Training and Research Hospital, Istanbul, Turkey.
authors: Ahmet Yalcin
authors: AY
authors: Berberoglu
authors: Department of Urology, Haseki Training and Research Hospital, Istanbul, Turkey.
authors: Murat
authors: M
authors: Baykal
authors: Department of Urology, Haseki Training and Research Hospital, Istanbul, Turkey.
authors: Murat
authors: M
authors: Binbay
mesh_terms: D000328:Adult; D015992:Body Mass Index; D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000601:surgery / Q000628:therapy*; D017602:Lithotripsy, Laser / Q000379:methods*; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D011300:Preoperative Care; D012189:Retrospective Studies; D012737:Sex Factors; D016896:Treatment Outcome; D020709:Ureteroscopes; D018666:Ureteroscopy / Q000379:methods*
keywords: Catheters; Kidney Calculi; Urolithiasis 