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    Do the urolithiasis scoring systems predict the success of percutaneous nephrolithotomy in cases with anatomical abnormalities?
    (Springer, 2017) Kocaaslan, Ramazan; Tepeler, Abdulkadir; Buldu, Ibrahim; Tosun, Muhammed; Utangac, Mehmet Mazhar; Karakan, Tolga; Ozyuvali, Ekrem
    The objective of this study is to assess the utility of the Guy, S.T.O.N.E., and CROES nephrolithometry scoring systems (SS), and compare the capability of each system to predict percutaneous nephrolithotomy (PNL) outcome in patients with anatomical abnormalities. We retrospectively collected medical records of patients with anatomical abnormalities who underwent PNL for the treatment of renal calculi by experienced surgical teams in four referral centers. All of the patients were graded by a single observer from each department based on preoperative computed tomography images using each SS. Patient demographics and outcomes were compared according to the complexity of the procedure as graded by each scoring system. A total of 137 cases with anatomical abnormalities [horseshoe kidney (n = 46), malrotation (n = 33), kypho and/or scoliosis (n = 31) and ectopic kidney (n = 27)] were assessed retrospectively. The mean stone burden, number, and density were 708.5 mm(2), 1.7, and 791.8 HU, respectively. The mean procedure, fluoroscopy, and hospitalization times were 75.2 +/- 35.3 min, 133.4 +/- 92.3 s, and 3.5 +/- 2.1 days, respectively. Stone-free status was achieved in 106 cases (77.4 %). A total of 17 (13.6 %) complications occurred postoperatively. The mean scores were 2.7, 7.2, and 219.1, for the Guy, S.T.O.N.E., and CROES systems, respectively. CROES score was the independent predictor of PNL success in cases with anatomical abnormalities [p: 0.001, OR 1.01, (95 % CI 1005-1021)]. The CROES scoring system is well correlated with the success of PNL in cases with anatomical abnormalities; the S.T.O.N.E. and Guy scoring systems failed to predict the outcomes of PNL in this specific patient population.
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    Flexible Ureterorenoscopy for the Treatment of Kidney Stone Within Pelvic Ectopic Kidney
    (Elsevier Science Inc, 2014) Bozkurt, Omer Faruk; Tepeler, Abdulkadir; Sninsky, Brian; Ozyuvali, Ekrem; Ziypak, Tevfik; Atis, Gokhan; Daggulli, Mansur
    OBJECTIVE To present the outcomes of flexible ureterorenoscopy (F-URS) and laser lithotripsy for the treatment of calculi within pelvic ectopic kidney (PEK). PATIENTS AND METHODS We retrospectively reviewed the medical records of 26 patients with calculi in PEK treated with F-URS in 5 referral hospitals between 2010 and 2013. Patient demographics and stone characteristics (age, sex, body mass index, stone size, location, history of shock wave lithotripsy or kidney surgery), and perioperative measures (duration of operation, fluoroscopic imaging, and hospitalization and success and complication rates) were reviewed. RESULTS A total of 26 patients with mean age of 41.1 +/- 15.8 years (7-72 years) were included in the study. The mean stone size was 17.0 +/- 5.1 mm (10-28 mm). The mean procedure and fluoroscopy times were calculated as 52.1 +/- 27.7 minutes (30-120 minutes) and 54.8 +/- 48.9 seconds (10-180 seconds), respectively. The mean length of hospital stay was 2.7 +/- 1.8 days (1-9 days). Treatment was deemed successful in 22 patients (84.6%). Ureteroscopy failed in 4 patients (15.4%) due to impaired passage of fragments (n = 3) or inability to reach the stone secondary to the location in an isolated lower calyx (n = 1). Minor postoperative complications were observed in 5 patients (19.2%; persistent hematuria [n = 1], fever [n = 1], renal colic [n = 2], and urinary tract infection [n = 1]). No severe complications or mortality occurred. CONCLUSION Our results suggest that F-URS is a safe and effective minimally invasive treatment modality for small-and medium-sized stones in PEK. (C) 2014 Elsevier Inc.