Search results for "Urolithiasis"

Comparative analysis of direct and indirect costs of two minimally invasive techniques for the treatment of renal/ureteral calculi smaller than 2 cm

2020

[EN] Objective: To perform a comparative analysis of indirect and direct costs of two minimally invasive techniques (extracorporeal shock wave lithotripsy (ESWL) vs. ureteroscopy with holmium laser (URS/RIRS)) for the treatment of renal/ureteral calculi smaller than 2 cm. Material and methods: Prospective, comparative, non-randomized study of 84 patients treated for kidney stones smaller than 2 cm between January and December 2016. Of these, 38 (45.67%) were treated with ESWL (18 renal lithiasis and 20 ureteral lithiasis) and 46 (54.32%) with URS/RIRS (22 renal lithiasis and 24 ureteral lithiasis). A total of 19 (41.3%) patients in the URS/RIRS group and 15 (39.5%) patients in the ESWL grou…

Retrograde endoureterotomy as a treatment option for impacted calculus in the ureterointestinal junction

2021

Introduction: In patients with a history of radical cystectomy and with intestinal diversion, urolithiasis in the upper urinary tract is a frequent event. Material and methods: We describe for the first time a case of retrograde endoureterotomy used to treat a calculus proximal to the ureterointestinal junction. Results: This technique is of interest when antegrade access is not possible. In our example, after passing the guidewire percutaneously, and externalize it through the stoma, the left meatus was reached with a resectoscope inserted through the ileal duct. After the use of a balloon to prevent migration of the calculus, a retrograde endoureterotomy was performed with a Collins knife…

New concept of the pathogenesis of urinary lithiasis.

1948

Infrared Spectroscopy In Urolithiasis In Children

2014

Towards data-driven medical imaging using natural language processing in patients with suspected urolithiasis.

2020

Abstract Objective The majority of radiological reports are still written as free text and lack structure. Further evaluation of free-text reports is difficult to achieve without a great deal of manual effort, and is not possible in everyday clinical practice. This study aims to automatically capture clinical information and positive hit rates from narrative radiological reports of suspected urolithiasis using natural language processing (NLP). Methods Narrative reports of low dose computed tomography (CT) of the retroperitoneum from April 2016 to July 2018 (n = 1714) were analyzed using NLP. These free-text reports were automatically structured based on RadLex concepts. Manual feedback was…

PATHOPHYSIOLOGY AND CLINICAL ASPECTS OF URINARY LITHIASIS

2007

Urine is a complex balanced solution containing dissociated and non-dissociated solutes. Any variation in urine saturation grade (number of crystals dissolved in a volume of urine), urinary pH and the concentration of crystallization inhibitors can break the normal existing balance and lead to urolithiasis. In the present article we analyze the principal mechanisms (absorptive, renal, resorptive) of hypercalciuria. It will be also shown how heredity directly influences the clinical aspects of cystine, xanthine and oxalate lithiasis and how diet, in association with metabolic disorders, interferes in uric acid and oxalate stone formation. Finally, we report on the roles of urinary tract malf…

ESWL Prediction of outcome and failure Prevention

2007

Based on our own experiences and a review of the recent literature, this article evaluates recent developments in predicting outcomes and failures of shockwave lithotripsy when treating patients with urinary tract stones. After a detailed MEDLINE research, the authors identified several variables that influence and predict extracorporeal shockwave lithotripsy (ESWL) success. These variables may be categorized as stone variables, patient variables and operator variables. Only multivariate analysis on a large number of homogenous patients may offer an objective evaluation of the factors conditioning ESWL outcome.

Imaging modalities and treatment of paediatric upper tract urolithiasis: A systematic review and update on behalf of the EAU urolithiasis guidelines …

2020

Prompt diagnosis and treatment of paediatric urolithiasis are required to avoid long term sequelae of renal damage.To systematically review the literature regarding the diagnostic imaging modalities and treatment approaches for paediatric urolithiasis.PubMed, Science Direct, Scopus and Web of Science were systematically searched from January 1980-January 2019. 76 full-text articles were included.Ultrasound and Kidney-Ureter-Bladder radiography are the baseline diagnostic examinations. Non-contrast Computed Tomography (CT) is the second line choice with high sensitivity (97-100%) and specificity (96-100%). Magnetic Resonance Urography accounts only for 2% of pediatric stone imaging studies. …

Future perspectives of flexible ureteroscopy

2019

Purpose of review In the recent past, there were numerous and promising technological developments in the field of endourology leading to tremendous changes in the management of urolithiasis. This review will try to weave ancient stone therapy with the very modern advent of flexible ureteroscopy and recent developments in robotic systems. Recent findings In the broad field of flexible ureteroscopy for stone surgery, new disposable scopes have been developed and established. The use of robotic instruments is also a new and interesting concept. Additionally, clinical research on the understanding of laser features leads to a specific and appropriate use of lasers for lithotripsy, both holmium…

Nastanak i liječenje gigantskih kamenaca ileocekalnog urinskog spremnika u pacijenta liječenog cistektomijom zbog intersticijskog cistitisa: prikaz s…

2021

Cilj: Cilj ovoga rada je prikazati pacijenta s intersticijskim cistitisom u kojega je došlo do stvaranja kamenaca u novoformiranom urinskom spremniku. Prikaz slučaja: Pacijent star 48 godina obrađivan je zbog recidivnih infekcija mokraćnog sustava. Prethodno mu je zbog intersticijskog cistitisa, koji je znatno utjecao na njegovu kvalitetu života, učinjena cistektomija uz oblikovanje urinskog spremnika (Mainz-pouch I). Urološkom obradom pronađena su u području urinskoga spremnika dva velika kamenca dimenzija 77 × 74 mm te 76 × 62 mm uz obostranu hidronefrozu. Kako bi se riješio uzrok rekurentnih urinarnih infekcija, učinjena mu je otvorenim pristupom ekstrakcija oba kamenca. Poslijeoperacijs…