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urinary calculi

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https://www.readbyqxmd.com/read/28324714/association-between-nephrolithiasis-and-fatty-liver-detected-on-non-enhanced-ct-for-clinically-suspected-renal-colic
#1
Abdel-Rauf Zeina, Limor Goldenberg, Alicia Nachtigal, Rabea Hasadia, Walid Saliba
PURPOSE: To estimate a direct association between nephrolithiasis and hepatosteatosis in patients referred to CT due to clinical suspicion of renal colic. METHODS: A 508 non-contrast CT scans were examined for calculi in the kidneys or urinary tract, including measurements of liver attenuation, spleen attenuation, thickness of visceral and subcutaneous fat. Logistic regression examined the association of nephrolithiasis and hepatosteatosis findings. RESULTS: Nephrolithiasis was found in 421 (83...
March 16, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28303335/treatment-selection-for-urolithiasis-percutaneous-nephrolithomy-ureteroscopy-shock-wave-lithotripsy-and-active-monitoring
#2
Mahesh Desai, Yinghao Sun, Noor Buchholz, Andrew Fuller, Tadashi Matsuda, Brian Matlaga, Nicole Miller, Damien Bolton, Mohammad Alomar, Arvind Ganpule
Urolithiasis is a significant worldwide source of morbidity, constituting a common urological disease that affects between 10 and 15% of the world population. Recent technological and surgical advances have replaced the need for open surgery with less invasive procedures. The factors which determine the indications for percutaneous nephrolithotomy include stone factors (stone size, stone composition, and stone location), patient factors (habitus and renal anomalies), and failure of other treatment modalities (ESWL and flexible ureteroscopy)...
March 16, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/28301210/update-of-dual-energy-ct-applications-in-the-genitourinary-tract
#3
Ravi K Kaza, Lakshmi Ananthakrishnan, Avinash Kambadakone, Joel F Platt
OBJECTIVE: Dual-energy CT (DECT) is being increasingly used for abdominal imaging because it provides incremental benefit of material characterization without significant increase in radiation dose. This article provides an overview of current DECT techniques and use of DECT in urinary tract imaging for assessment of renal masses and urinary calculi characterization and in CT urography. CONCLUSION: Incorporation of DECT into clinical practice and use of its material characterization capabilities in urinary tract imaging enable characterization of urinary calculi and incidental renal lesions and can reduce radiation dose by allowing generation of virtual unenhanced images...
March 16, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28289943/intra-patient-comparison-of-reduced-dose-model-based-iterative-reconstruction-with-standard-dose-adaptive-statistical-iterative-reconstruction-in-the-ct-diagnosis-and-follow-up-of-urolithiasis
#4
Sean Tenant, Chun Lap Pang, Prageeth Dissanayake, Varut Vardhanabhuti, Colin Stuckey, Catherine Gutteridge, Christopher Hyde, Carl Roobottom
OBJECTIVES: To evaluate the accuracy of reduced-dose CT scans reconstructed using a new generation of model-based iterative reconstruction (MBIR) in the imaging of urinary tract stone disease, compared with a standard-dose CT using 30% adaptive statistical iterative reconstruction. METHODS: This single-institution prospective study recruited 125 patients presenting either with acute renal colic or for follow-up of known urinary tract stones. They underwent two immediately consecutive scans, one at standard dose settings and one at the lowest dose (highest noise index) the scanner would allow...
March 13, 2017: European Radiology
https://www.readbyqxmd.com/read/28265592/multiple-uric-acid-bladder-stones-clinical-presentation-and-endoscopic-management
#5
Fabio Cesar Miranda Torricelli, Shih-Chieh Jeff Chueh, Shujane Shen, Manoj Monga
Background: Bladder urinary calculi occur in 3%-8% of men with bladder outlet obstruction, and although most of them are composed of calcium, in a few cases uric acid bladder stones are diagnosed. Case Presentation: We present clinical images and therapeutic management of a 65-year-old diabetic man with significant prostate enlargement and >30 bladder stones, the largest being 17 mm. Despite the large stone burden, the patient was managed by cystolithotripsy. Remarkably, stone composition analysis revealed 100% uric acid stone...
2017: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/28260911/increased-risk-of-endotracheal-intubation-and-heart-failure-following-acute-myocardial-infarction-in-patients-with-urolithiasis-a-nationwide-population-based-study
#6
Shun-Ku Lin, Jui-Ming Liu, Ying-Hsu Chang, Yuan-Tien Ting, See-Tong Pang, Ren-Jun Hsu, Po-Hung Lin
BACKGROUND: Urolithiasis is a common urinary tract disease worldwide. It has been connected to systemic diseases, including hypertension, diabetes mellitus, metabolic syndrome, and cardiovascular disease. In the current study, we aimed to evaluate the relationship between urolithiasis and the complications of acute myocardial infarction (AMI). MATERIALS AND METHODS: Data were obtained from the Longitudinal Health Insurance Database 2005 of the National Health Insurance Research Database...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28258472/prevalence-of-renal-uric-acid-stones-in-the-adult
#7
Alberto Trinchieri, Emanuele Montanari
The aim of this study was to estimate uric acid renal stone prevalence rates of adults in different countries of the world. PubMed was searched for papers dealing with "urinary calculi and prevalence or composition" for the period from January 1996 to June 2016. Alternative searches were made to collect further information on specific topics. The prevalence rate of uric acid stones was computed by the general renal stone prevalence rate and the frequency of uric acid stones in each country. After the initial search, 2180 papers were extracted...
March 3, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28229196/the-impact-of-ureteral-stent-indwelling-time-on-the-treatment-of-acute-infection-caused-by-ureteral-calculi
#8
Yun-Feng Shi, Wen-Long Ju, Yi-Ping Zhu, Shu-Jie Xia, Xiao-Wen Sun
Ureteric stenting is an effective drainage method in patients with acute urinary tract infection caused by ureteral calculi; however, the optimal ureteral stent indwelling time has not been clearly defined. The aim of this study was to evaluate the effect of ureteric stent indwelling time on the treatment of acute infection secondary to urinary tract calculi. A total of 142 patients with acute infection caused by urinary tract calculi were identified retrospectively from January 2011 to August 2015 at our institution...
February 22, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28222205/complex-cystine-kidney-stones-treated-with-combined-robot-assisted-laparoscopic-pyelolithotomy-and-intraoperative-renoscopy
#9
Luca Meggiato, Francesco Cattaneo, Fabio Zattoni, Fabrizio Dal Moro, Paolo Beltrami, Filiberto Zattoni
INTRODUCTION: Cystinuria, a rare autosomal recessive disease characterized by a defect in cystine renal reabsorption, can often determine complex cystine renal calculi, leading to important complications such as urinary obstruction, urinary infections, and impaired kidney function. Complex kidney stones can have a difficult management and can be very arduous to treat. CASE DESCRIPTION: We present the case of a 20-year-old Jeowah's witness woman with complex cystine renal stones treated with combined robot-assisted laparoscopic pyelolithotomy and intraoperative renoscopy...
February 18, 2017: Urologia
https://www.readbyqxmd.com/read/28221146/-new-strategies-and-protocols-in-swl
#10
Alberto Budía Alba, Pilar Bahilo Mateu, Guzmán Ordaz Jurado, José Daniel López-Acón, Marta Trassierra Villa, Francisco Boronat Tormo
OBJECTIVE: An update of the new treatment strategies in extracorporeal lithotripsy as a valid therapeutic alternative in the management of urinary calculi. METHODS: We performed a search and review of the most recent literature which responded to the terms "best practices", "update", "optimization", "practice pattern" in lithotripsy. Only articles written in English or Spanish were selected. RESULTS: The use of a stepwise voltage ramping during extracorporeal lithotripsy with or without pause before the first rise of energy, a decreased delivery rates and the use of a higher number of shock waves per session are shown as alternatives to improve the effectiveness with optimum safety profile...
January 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28221144/-may-renal-lithiasis-be-really-prevented-new-trends-and-therapeutic-tools
#11
Félix Grases, Antonia Costa-Bauzá, Rafael M Prieto
Renal calculi are generally formed as a result of the combination of certain factors, some related to urine composition (concentration of lithogenic substances, deficiency of crystallization inhibitors, presence of heterogeneous nucleants) and others with renal morphology and anatomy (urinary tract stasis, low urodynamic efficiency cavities, morpho-anatomic deformations, renal papillary tissue lesions). In fact, the composition, macrostructure and microstructure of the calculus will clearly depend on the factors that have induced it...
January 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28221141/-etiopathogenic-factors-of-the-different-types-of-urinary-litiasis
#12
Miguel Arrabal-Martín, María Carmen Cano-García, Miguel Ángel Arrabal-Polo, Alejandro Domínguez-Amillo, Nelson Canales-Casco, Javier de la Torre-Trillo, José Manuel Cózar-Olmo
In this review, we analyze the etiopathogenic principles of urinary lithiasis formation. In the kidney, calcifications that may cause renal lithiasis are produced as a consequence of processes that injury the urothelium at the papilla and Bellini's ducts. With the improvement of imaging techniques, mainly micro CT scan, it is possible to detect them and we may be able to anticipate to the formation of lithiasis. As we well know, there are different factors that influence the formation of the calculi depending on their composition...
January 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28221140/-urinary-lithiasis-as-a-systemic-disease
#13
Mercedes Leanez Jiménez, Fernando Candau Vargas-Zúñiga, Carlos Reina Ruiz
Urinary lithiasis is a prevalent disorder of uncertain origin which provokes health problems through potential harm to the urinary system, renal parenchyma or the body as a whole, with a frequent trend to relapse. Historically urinary calculi have been studied and treated as an isolated disease but nowadays we know more about their connection with other pathological entities. In a small percentage of patients, diseases like primary hyperparathyroidism, tubular renal acidosis, inflammatory bowel disease or bariatric surgery have a fairly well studied physiopathological link with kidney stones...
January 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28208926/simultaneous-transabdominal-hysterectomy-and-cystolithotomy-in-an-augmented-urinary-bladder-challenges-and-outcome
#14
Vijay Sharma, Rakesh Kapoor, Priyank Yadav, Pankaj Gaur, Deepa Kapoor
Augmentation cystoplasty is a procedure to increase the anatomical as well as functional capacity of the urinary bladder using a segment of bowel or ureter. Upto half of these patients develop complications but most of them are minor and managed easily. Urolithiasis, especially bladder calculi are seen in upto half of the cases and are removed endoscopically or by open approach. Hysterectomy is an uncommon procedure in patients with augmentation cystoplasty and is complicated by the altered anatomy of the pelvis...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28185760/why-we-need-a-higher-suspicion-index-of-urolithiasis-in-children
#15
REVIEW
Pierluigi Marzuillo, Stefano Guarino, Andrea Apicella, Angela La Manna, Cesare Polito
BACKGROUND: Most children with symptoms of urolithiasis and urinary solute excretion abnormalities leading to stone formation have no calculi revealed by ultrasound or X-ray plain film ("occult urolithiasis"). This covers a large group of children presenting with common symptoms such as abdominal pain, hematuria, and dysuria, often faced by general practitioners and pediatricians. However, half or more of children with urolithiasis could present with abdominal/flank pain without specific urinary symptoms...
January 29, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28169121/-percutaneous-nephrolithotomy-for-kidney-stones-in-elderly-patients-meta-analysis-of-results-and-complications
#16
R Haider, P Regnier, F-R Roustan, F Séverac, P-J Treacy, L Mendel, Y Bodokh, B Tibi, R Prader, O Traxer, D Chevallier, J Amiel, M Durand
INTRODUCTION AND OBJECTIVE: Percutaneous nephrolithotomy (PCNL) is the gold standard treatment for kidney stones regardless of age. Elderly patients (EP)≥65years old, in growing numbers, have more comorbidities than the general population, may alter results of PCNL. The aim of this meta-analysis was to compare efficacy and complications of this procedure between EP and young patients (YP). METHODS: Original studies of prospective and historical cohorts, in English or French, presenting PCNL series published on PubMed until 2015 were identified using the keywords percutaneous nephrolithotomy, elderly patients, kidney stones and staghorn calculi...
February 2017: Progrès en Urologie
https://www.readbyqxmd.com/read/28166740/delineation-of-cystinuria-in-saudi-arabia-a-case-series
#17
Abdulrahman Obaid, Marwan Nashabat, Khalid Al Fakeeh, Abdullah T Al Qahtani, Majid Alfadhel
BACKGROUND: Cystinuria is an inherited metabolic disease that is caused by defects in two genes, SLC3A1 and SLC7A9, which result in a renal reabsorptive defect of cystine and other dibasic amino acids, including ornithine, arginine, and lysine. Patients usually present with recurrent renal calculi and may develop renal impairment. Medical management includes high fluid intake and chelating agents. To the best of our knowledge, this is the first study describing cystinuria in Saudi Arabia...
February 6, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28124870/rigid-only-versus-combined-rigid-and-flexible-percutaneous-nephrolithotomy-pnl-a-systematic-review
#18
Cecilia M Cracco, Thomas Knoll, Evangelos N Liatsikos, Palle J Osther, Arthur D Smith, Roberto M Scarpa, Cesare M Scoffone
INTRODUCTION: Percutaneous nephrolithotomy (PNL) is usually performed worldwide with a rigid-only antegrade approach. Daily practice suggests that adding flexible nephroscopy and/or ureteroscopy to conventional rigid PNL might improve its efficacy and safety, but available evidence is weak. Appraisal of reliable outcomes of such PNL techniques would better guide intraoperative choices and optimize surgical results. Therefore our objective was to systematically review relevant literature comparing the outcomes of rigid-only PNL and combined flexible PNLs (adding flexible nephroscopy and/or flexible ureteroscopy) for the treatment of large and/or complex upper urinary tract calculi, with regard to efficacy and safety...
January 26, 2017: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/28124521/forming-a-stone-in-pelviureteric-junction-obstruction-cause-or-effect
#19
Theodora Stasinou, Andreas Bourdoumis, Junaid Masood
OBJECTIVES: To investigate a possible causal relationship for stone formation in pelviureteric junction obstruction and to outline management options. MATERIALS AND METHODS: A literature search and evidence synthesis was conducted via electronic databases in the English language using the key words pelviureteric junction obstruction; urolithiasis; hyperoxaluria; laparoscopic pyeloplasty; flexible nephroscopy; percutaneous nephrolithotomy, alone or in combination...
January 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28122013/late-pleistocene-early-holocene-evidence-of-prostatic-stones-at-al-khiday-cemetery-central-sudan
#20
Donatella Usai, Lara Maritan, Gregorio Dal Sasso, Gilberto Artioli, Sandro Salvatori, Tina Jakob, Tiziana Salviato
The recovery of three stone-like ovoid objects within the burial of a pre-Mesolithic (Late Pleistocene/Early Holocene) individual at Al Khiday cemetery (Central Sudan) raises the question of the nature and origin of these objects. The position in which the objects were found in relation to the human skeleton suggested a pathological condition affecting the individual, possibly urinary bladder, kidney stones or gallstones. To solve this issue, a multi-analytical approach, consisting of tomographic, microstructural and compositional analyses, was therefore performed...
2017: PloS One
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