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Kidney stone nomogram

Todd M Morgan, Rohit Mehra, Placede Tiemeny, J Stuart Wolf, Shulin Wu, Zaina Sangale, Michael Brawer, Steven Stone, Chin-Lee Wu, Adam S Feldman
BACKGROUND: There is a critical need for improved prognostic discrimination in patients with renal cell carcinoma (RCC) given the increasing awareness that some patients may be managed with active surveillance, while others with higher-risk disease might benefit from adjuvant therapy following surgery. OBJECTIVE: To determine whether a multigene proliferation signature predicts long-term oncologic outcomes in surgically resected RCC. DESIGN, SETTING, AND PARTICIPANTS: The cell cycle proliferation (CCP) score was determined after radical nephrectomy for localized clear cell, papillary, or chromophobe RCC in 565 patients...
December 14, 2017: European Urology
Francesco Sanguedolce, Giorgio Bozzini, Ben Chew, Panagiotis Kallidonis, Jean de la Rosette
CONTEXT: Retrograde intrarenal surgery has gained substantial popularity worldwide thanks to continuous improvements in technology and techniques, and is now considered one of the first-line treatment options for active removal of renal stones. OBJECTIVE: To provide a comprehensive synthesis of the main evidences in literature on the current management of kidney stones by means of retrograde intrarenal surgery (RIRS). EVIDENCE ACQUISITION: A review of literature has been conducted using search string "retrograde intrarenal surgery OR flexible ureteroscop* OR ureterorenoscop*", without any language restriction; PubMed, Embase, and Scopus databases were searched in November 2016...
February 2017: European Urology Focus
Jason Damián Landa-Salas, Juan Ramón Torres-Anguiano, Efraín Maldonado-Alcaraz, Virgilio Augusto Lopez-Samano, Eduardo Alonso Serrano-Brambila, Jorge Moreno-Palacios
BACKGROUND: Percutaneous nephrolithotomy remains the standard of care for kidney stones larger than 2cm. Therefore, setting a prognosis for complete stone resolution through this method is essential. The prognostic tools available have limited prediction. OBJECTIVES: To evaluate the stone-free rate in patients undergoing percutaneous nephrolithotomy with the Clinical Research Office of the Endourological Society nomogram and suggest modifications to improve the classification...
November 2017: Cirugia y Cirujanos
N K Gadzhiev, S S Brovkin, V E Grigorev, V V Dmitriev, V A Malkhasyan, D D Shkarupa, A V Pisarev, D A Mazurenko, V M Obidnyak, I N Orlov, S V Popov, N S Tagirov, S V Petrov
AIM: To analyze the sub-segment of mHealth devoted to assessing of the risk of recurrent stone formation and metaphylaxis of stone formation. To design a smartphone application (app.) in Russian language for urolithiasis patients. MATERIALS AND METHODS: Three working groups of urologists from three St. Petersburg clinics searched for downloadable medical applications relevant to the above requirements. After searching and analyzing existing medical applications, the most acceptable design and structure of our own application were identified...
April 2017: Urologii︠a︡
Shimpei Yamashita, Yasuo Kohjimoto, Takashi Iguchi, Satoshi Nishizawa, Akinori Iba, Kazuro Kikkawa, Isao Hara
OBJECTIVES: Although previous studies have indicated that stone heterogeneity can affect extracorporeal shockwave lithotripsy (SWL) outcomes, there is no established measurement of stone heterogeneity on CT imagery. We investigated whether variation coefficient of stone density (VCSD) can predict shockwave success. MATERIALS AND METHODS: We conducted a retrospective review of 245 patients with urinary calculi who had undergone SWL. We compared the predictive powers of treatment success between VCSD and other parameters associated with CT attenuation...
April 2017: Journal of Endourology
Faruk Ozgor, Muhammed Tosun, Yunus Kayali, Metin Savun, Murat Binbay, Abdulkadir Tepeler
OBJECTIVE: The Triple D scoring system is defined as novel and simple nomogram using the main parameters (skin-to-stone distance, stone density, and volume) to indicate most appropriate patients for extracorporeal shockwave lithotripsy (SWL). We aimed to evaluate the accuracy of the Triple D scoring system in predicting SWL success rates. PATIENTS AND METHODS: In two tertiary academic centers, charts were retrospectively analyzed of patients who had, between January 2014 and May 2016, been treated by SWL for radiopaque kidney stones...
February 2017: Journal of Endourology
Akif Erbin, Abdulkadir Tepeler, Ibrahim Buldu, Harun Ozdemir, Muhammet Tosun, Murat Binbay
OBJECTIVE: To assess and compare the applicability of the Resorlu-Unsal Stone Score (RUSS) and the Modified Seoul National University Renal Stone Complexity (S-ReSC) score for flexible ureterorenoscopy (f-URS). PATIENTS AND METHODS: We retrospectively analyzed the hospital files of 719 patients who had been treated with f-URS for kidney stone at two referral centers between July 2012 and December 2015. The RUSS and Modified S-ReSC scores were calculated by the same surgeon for each patient by using imaging methods and were compared as to their predictive capability for postoperative success...
November 2016: Journal of Endourology
Simone L Vernez, Zhamshid Okhunov, Piruz Motamedinia, Vincent Bird, Zeph Okeke, Arthur Smith
Currently, there is no single agreement upon an ideal predictive model that characterizes the complexity of renal stones and predicts surgical outcomes following percutaneous nephrolithotomy (PCNL). New predictive tools have recently emerged to systematically and quantitatively assess kidney stone complexity to predict outcomes following PCNL: the Guy's Stone Score, the CROES nomogram, S.T.O.N.E. nephrolithometry, and S-ReSC score. An ideal scoring system should include variables that both influence surgical planning and are predictive of postoperative outcomes...
2016: Reviews in Urology
Dean G Assimos
No abstract text is available yet for this article.
December 2015: Journal of Urology
Şükrü Kumsar, Hüseyin Aydemir, Fikret Halis, Osman Köse, Ahmet Gökçe, Oztug Adsan
INTRODUCTION: Guy's Stone Score and S.T.O.N.E. Nephrolithometry nomograms have been introduced for systematic and quantitative assessment of kidney stones. The aim of this study was to reveal the value of two scorings systems, Guy and S.T.O.N.E, most frequently used for predicting postoperative stone-free status prior to Percutaneous Nephrolithotomy (PCNL), in the prediction of postoperative results of PCNL. MATERIAL AND METHODS: We retrospectively examined patients who underwent PCNL...
2015: Central European Journal of Urology
A Pfau, K-U Eckardt, F Knauf
BACKGROUND: Kidney stones are a common and increasing problem worldwide. Nephrolithiasis is frequently a chronic disease given the risk of recurrence following passage of a first stone. OBJECTIVES: In the present article, an update on the diagnosis and treatment of kidney stones relevant for internal medicine physicians is provided. METHODS: This review is based on a selective literature search and our own work. RESULTS AND CONCLUSION: The diagnosis of kidney stones is based on the clinical history and physical examination...
December 2015: Der Internist
Ibrahim Halil Bozkurt, Ozgu Aydogdu, Tarik Yonguc, Serkan Yarimoglu, Volkan Sen, Bulent Gunlusoy, Tansu Degirmenci
PURPOSE: To compare the Guy and Clinical Research Office of the Endourological Society (CROES) scoring systems in predicting postpercutaneous nephrolithotomy (PCNL) stone-free rate and complications. PATIENTS AND METHODS: A total of 437 patients who underwent PCNL for renal stones were included in the recent retrospective study. All stones were evaluated with CT preoperatively. Mean stone diameter was 701.52±510.65 mm(2). Guy and CROES nephrolithometry scores were calculated for each patient, and their correlation with stone-free status, operative and fluoroscopy time, and length of hospital stay was evaluated...
September 2015: Journal of Endourology
Fabio Cesar Miranda Torricelli, Robert Brown, Fernanda C G Berto, Sarah Tarplin, Miguel Srougi, Eduardo Mazzucchi, Manoj Monga
INTRODUCTION: We performed a multicentre validation of a nomogram to predict uric acid kidney stones in two populations. METHODS: We reviewed the kidney stone database of two institutions, searching for patients with kidney stones who had stone composition analysis and 24-hour urine collection from January 2010 to December 2013. A nomogram to predict uric acid kidneys stones based on patient age, body mass index (BMI), and 24-hour urine collection was tested. Receiver-operating curves (ROC) were performed...
March 2015: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
Piruz Motamedinia, Zhamshid Okhunov, Zeph Okeke, Arthur D Smith
Recently, several scoring systems have been proposed to predict outcomes of percutaneous nephrolithotomy, objectively and quantitatively assessing kidney calculi complexity using cross-sectional imaging. These scoring systems are promising new tools that can guide surgical decision making, predict surgical outcomes, counsel patients undergoing stone surgery, and improve standardized academic reporting in percutaneous kidney stone surgery. In this article, we review features of each of these systems, their similarities and differences, and their applicability in clinical practice and relevance in academic reporting...
April 2015: Current Urology Reports
Andrew D Rule, John C Lieske, Xujian Li, L Joseph Melton, Amy E Krambeck, Eric J Bergstralh
Most patients with first-time kidney stones undergo limited evaluations, and few receive preventive therapy. A prediction tool for the risk of a second kidney stone episode is needed to optimize treatment strategies. We identified adult first-time symptomatic stone formers residing in Olmsted County, Minnesota, from 1984 to 2003 and manually reviewed their linked comprehensive medical records through the Rochester Epidemiology Project. Clinical characteristics in the medical record before or up to 90 days after the first stone episode were evaluated as predictors for symptomatic recurrence...
December 2014: Journal of the American Society of Nephrology: JASN
Brian H Eisner, David S Goldfarb
No abstract text is available yet for this article.
December 2014: Journal of the American Society of Nephrology: JASN
Guido M Kamphuis, Joyce Baard, Matias Westendarp, Jean J M C H de la Rosette
PURPOSE: The purpose of the study was to give an overview of the data derived from the CROES PCNL Global Study published previously in 25 articles. METHODS: A comprehensive overview of the outcome of the CROES PCNL Global Study was made, analysed and compared with the current literature and guidelines. RESULTS: Percutaneous nephrolithotomy (PCNL) was predominately performed in prone position. Although the supine position claims to be favourable over the prone approach, the present study showed a longer operation time and lower stone-free rate (SFR)...
February 2015: World Journal of Urology
Kevin Labadie, Zhamshid Okhunov, Arash Akhavein, Daniel M Moreira, Jorge Moreno-Palacios, Michael Del Junco, Zeph Okeke, Vincent Bird, Arthur D Smith, Jaime Landman
PURPOSE: Contemporary predictive tools for percutaneous nephrolithotomy outcomes include the Guy stone score, S.T.O.N.E. nephrolithometry and the CROES nephrolithometric nomogram. We compared each scoring system in the same cohort to determine which was most predictive of surgical outcomes. METHODS: We retrospectively reviewed the records of patients who underwent percutaneous nephrolithotomy between 2009 and 2012 at a total of 3 academic institutions. We calculated the Guy stone score, the S...
January 2015: Journal of Urology
Hiroki Ito, Kentaro Sakamaki, Takashi Kawahara, Hideyuki Terao, Kengo Yasuda, Shinnosuke Kuroda, Masahiro Yao, Yoshinobu Kubota, Junichi Matsuzaki
OBJECTIVE: To develop and internally validate a preoperative nomogram for predicting stone-free status (SF) after flexible ureteroscopy (fURS) for renal stones, as there is a need to predict the outcome of fURS for the treatment of renal stone disease. PATIENTS AND METHODS: We retrospectively analysed 310 fURS procedures for renal stone removal performed between December 2009 and April 2013. Final outcome of fURS was determined by computed tomography 3 months after the last fURS session...
March 2015: BJU International
Fabio C M Torricelli, Shubha De, Xiaobo Liu, Juan Calle, Surafel Gebreselassie, Manoj Monga
BACKGROUND AND PURPOSE: Distinguishing calcium oxalate from uric acid stones is critical to identify those patients who may benefit from dissolution therapy and can also help direct preventive measures for stone growth. We aim to study whether 24-hour urine analysis may predict the urinary stone composition. PATIENTS AND METHODS: We retrospectively identified patients with calcium oxalate and uric acid stone compositions who also had a 24-hour urine collection within 3 months of stone analysis...
June 2014: Journal of Endourology
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