Kidney Calculi (Total 626740 Papers Found)

In this retrospective study, 31 Kuwaiti children with renal stones were reviewed between January 1996 and September 2000. Male to Female ratio was 2.1:1 with a mean age at presentation of 38 months. Family history of renal stones was reported in 58%. Stones were localized to the kidneys in 74.1%,to ureters in 6% and to the bladder in 9.6%.Bilateral stones were found in 64.5%. Clinical manifestations included: hematuria in 70.9%, passage of stones in 64.5%, abdominal pain in 41.9%, urinary tract ...
The question was addressed whether dietary phosphorus-induced nephrocalcinosis in rats is associated with impaired kidney function. Weanling female rats were fed purified diets containing either 0.4 or 0.6% (wt/wt) phosphorus for 28 d. The diet containing 0.6% phosphorus produced marked kidney calcification, as determined both by chemical analysis of kidney calcium and histological examination in kidney sections. Histological examination did not show calcification in stomach, lung, heart or thor ...
PURPOSE Hypercalciuria is the most common cause of kidney stone disease and genetic factors have an important role in nearly half of these cases. Recently loss-of-function mutations of CYP24A1, the gene encoding vitamin D 24-hydroxylase, were identified in idiopathic infantile hypercalcemia. We describe the clinical and molecular basis of severe long-standing kidney stone disease in adults caused by CYP24A1 mutations. MATERIALS AND METHODS Three subjects from 2 Israeli families with nephrolith ...
The objective of the study was to investigate the safety and efficacy of flexible ureteroscopy and holmium laser lithotripsy for the management of patients with autosomal dominant polycystic kidney disease (ADPKD) and associated nephrolithiasis. Between 2005 and 2010, flexible ureteroscopic stone treatment was attempted in 13 patients with ADPKD. Two patients had bilateral renal stones. Most of the stones were located in the renal pelvis and/or calices with a stone size 1.7 cm in the largest di ...
Filter-grown Madin-Darby canine kidney (MDCK) cells labelled for 24 h with [35S]sulphate were found to secrete macromolecules [35S]sulphated on their carbohydrate moieties predominantly into the basolateral medium, whereas the tyrosine-[35S]sulphated proteins synthesized were predominantly secreted into the apical medium. In contrast with the predominant apical secretin of tyrosine-[35S]sulphated proteins, the free tyrosine O-[35S]sulphate (Tyr[35S]) was released mostly into the basolateral medi ...
BACKGROUND Percutaneous nephrolithotomy (PCNL) is performed to treat relatively large renal stones. Recent publications indicate that tubeless and total tubeless (stentless) PCNL is safe in selected patients. We performed a systematic review and network meta-analysis to evaluate the feasibility and safety of different PCNL procedures, including total tubeless, tubeless with stent, small-bore tube, and large-bore tube PCNLs. METHODS PubMed, Cochrane Central Register of Controlled Trials, and EM ...
Renal tubular acidosis (RTA) is a well-known metabolic disturbance that may promote recurrent renal stone formation. However, its incidence, screening criteria and association with other lithogenic metabolic abnormalities are not established in recurrent nephrolithiasis. 10 of 50 consecutive recurrent renal stone formers had a persistent fasting morning urinary pH above 6.0 and/or a basal plasma bicarbonate concentration below 20.0 mM. Acid and alkaline loads disclosed RTA in 3 patients: 1 patie ...
In 65 jejunolleal (JI) bypasses done from 1973-1979, there were nine Scott and 56 Payne (with Y-shaped anastomosis). Preoperative excess body weight (EBW) translated to the 1983 Metropolitan Tables was 112 +/- 30%. Eight patients are lost to follow-up. We reversed seven patients for renal stones (12%) accompanied by a vertical banded gastroplasty (VBG) and one because she demanded a VBG. Five patients were reversed by surgeons elsewhere for minor problems (three with an accompanying gastric redu ...
We studied renal function an average of 44 months after simultaneous bilateral renal SWL in 56 patients. No cases of clinically apparent acute renal failure occurred in the early postoperative period. The glomerular filtration rate (GFR) was calculated using an empiric formula having a significant correlation with measured creatinine clearance, and a change of 20% or greater was considered a clinically significant deterioration in renal function. Of the seven patients with a preoperative serum c ...
The hydrolysis of urea by the bacterial enzyme urease pathologically increase urinary ammonia, bicarbonate, carconate and alkalinity. These factors contribute to the formation of urinary stones and to the virulence of bacteria. Acetohydroxamic acid, a potent inhibitor of urease, has been administered to 23 patients with staghorn renal calculi and urea-splitting urinary infection. Urinary ammonia and alkalinity has been reduced in every patient. A dose of 1.0 gm. acetohydroxamic acid daily has be ...
Extracorporeal shock-wave lithotripsy has altered the therapeutic approach to urinary stone disease. Recently, a method was developed in which shock-wave generation is obtained piezoelectrically. To evaluate the effect of extracorporeal piezoelectric lithotripsy (EPL) on renal function, 20 patients were studied prior to and after EPL of renal calculi. Renal cortical function was evaluated by using a previously described and validated quantitative single photon emission computerized tomography (S ...
Crossed renal ectopia occurs when the kidney is located on the opposite side. It is the second most common fusion anomalies after horseshoe kidney. Ectopic kidney occurs as a result of a halt in migration to their normal location, during embryonic period. Here we present a case of fused right renal ectopia which was found during routine dissection in 59 years old male cadaver; where the right kidney was horizontal and fused to lower pole of left kidney. Proper knowledge of morphological variatio ...
BACKGROUND There are over 250 kidney transplant programs in the USA. OBJECTIVE To determine if highly competitive regions, defined as regions with a higher number of transplant centers, will approve and wait-list more end-stage renal disease (ESRD) candidates for transplant despite consistent incidence and prevalence of ESRD nationwide. METHODS ESRD Network and OPTN data completed in 2011 were obtained from all transplant centers including listing data, market saturation, market share, organ ...
OBJECTIVE There is no consensus on the treatment of renal colic, a hazardous condition for both pregnant women and their fetus during pregnancy. The present study was to evaluate the therapeutic safety and efficacy of double-J stent. METHODS Twenty-five pregnant women were admitted into our hospital for renal colic between January 2008 and June 2009. The mean age was (28.3 ± 4.9) years old. And the mean gestational week was (20.1 ± 6.9) weeks. The diagnostic and therapeutic procedures were a ...
This paper presents empirical data from the United Kingdom National Health Service on the comparative mean hospital costs per patient of first generation extracorporeal shock wave lithotripsy (ESWL) and percutaneous nephrolithotomy (PCN) in the treatment of kidney stones. These results were subjected to a sensitivity analysis and related to evidence on the health effects of the two approaches to treatment. The hospital costs of PCN were found to be lower than for ESWL in the empirical comparison ...
With the advent of multi-detector row CT scanners, evaluation of the urothelium of the entire urinary tract with high-resolution thin sections during a single breath-hold has become a reality. Multidetector CT urography (MDCTU) is a single examination that allows evaluation of potential urinary tract calculi, renal parenchymal masses, and both benign and malignant urothelial lesions. Initial results with this new technique are encouraging. Current investigations of MDCTU focus on methods to impr ...
In traditional system of medicine S. xanthocarpum is used treating difficulty in urination and renal calculus. The objective of the present study was to scientifically evaluate diuretic potential of S. xanthocarpum. The study was divided into two phases of evaluation (acute and sub-acute) with administration of aqueous extract of S. xanthocarpum roots. The animals were treated with either aqueous extract of S. xanthocarpum (AqSX; 200, 400 mg/kg, po) or furosemide (25 mg/kg, po) or hydrochlorthia ...
We have evaluated the serum levels of 25-hydroxyvitamin D (25-OHD) and 1,25-dihydroxyvitamin D (1.25-OHD) in 33 patients with primary hyperparathyroidism and normal renal function, relating them with the clinical expression of the disease and other biochemical parameters. The level of 1.25-OHD of the patients was significantly higher than in healthy controls [51 +/- 18 vs 36 +/- 10 pg/ml (122 +/- 43 vs 86 +/- 24 pmol/l), p less than 0.001], although it was higher than the upper limit of the norm ...
PURPOSE Birdwell Finlayson was a talented researcher and clinician whose pioneering work in the field of urolithiasis led him to worldwide prominence in urology. We researched his life and accomplishments to provide a historical account of his career. MATERIALS AND METHODS The archives of the Department of Urology and the University of Florida Health Science Center Library were searched for publications, photographs and other records relating to Doctor Finlayson. Additionally, we interviewed m ...
Chronic non-obstructive pyelonephritis has been followed for periods ranging from 18 to 40 years (mean 25), by using series of urographies and clinical examinations. The patients studied were fifteen adults, and eight children who were between the ages of three months and eleven years at their initial examinations. Among the adults, progressive scarring was found in 3 patients with renal calculi, the others remaining unchanged during the follow-up period. Among the children, progressive scarring ...
OBJECTIVE To evaluate the effect of prepuncture on the double-tract percutaneous nephrolithotomy (PCNL) under ultrasound guidance for renal staghorn calculi. METHOD Double-tract or even multi-tract is necessary for the treatment of staghorn calculi. However, intraoperative injury, exudation, bleeding, and influence of original tract might lead to difficulty in second puncture, thus prolonging operating time, and even lead to puncture failure. We retrospectively reviewed the records of 178 pati ...
Extracorporeal shock wave lithotripsy (SWL) is a reliable therapy for the treatment of urolithiasis. Nevertheless, improvements to enhance stone fragmentation and reduce tissue damage are still needed. During SWL, cavitation is one of the most important stone fragmentation mechanisms. Bubbles with a diameter between about 7 and 55μm have been reported to expand and collapse after shock wave passage, forming liquid microjets at velocities of up to 400m/s that contribute to the pulverization of r ...
End-stage-renal disease (ESRD) is a major health issue in the United States, and the Medicare costs of ESRD totaled nearly USD 21 billion in 2005. Renal transplantation has emerged as the treatment of choice in this patient population, providing improved quality of life and lower healthcare costs compared with other treatment options. Imaging evaluation of a graft kidney plays a critical role in the postoperative care of the renal transplant patient. In the past, diagnostic evaluation of the tra ...
First, the authors present a mammoth database from a public sector hospital in Pakistan. In the initial era, as noted by the authors, they adopted extracorporeal shockwave lithotripsy (ESWL) as their mainstay for treating stones. ESWL as the least invasive, safe and readily available method remained the preferred option initially. However, stones seen in South Asia differ from those in the West. In this geographical area, the stone bulk is large and often not amenable to ESWL. In the subsequent ...
The recently published advice of the Health Council of The Netherlands concerning urolithiasis can be divided in three chapters i.e. treatment, research and recent developments. The treatment with extracorporeal shockwave lithotripsy is considered the treatment of choice in 95% of patients with urolithiasis. The shockwave treatment has to be performed in centres with specialized know-how and facilities for basic and clinical research. The estimated number of extracorporeal shockwave lithotriptor ...
We studied calcium oxalate stone formation in rats in which calculogenesis was induced by a diet deficient in pyridoxine (vitamin B6). We studied the sequence of stone formation using both a gross specimen transillumination technique, which is described, and histologic methods. A characteristic regional distribution of calculi is described and illustrated. Histologic studies reveal the interstitial site of calcium oxalate microlith formation. The progressive movement of these crystals through th ...
BACKGROUND Transcatheter renal artery embolization is an effective and minimally invasive treatment option for acute renal bleeding. Early post-interventional complications include groin hematoma, incomplete embolization, coil misplacement and coil migration. Late complications are rare and mostly related to coil migration. CASE PRESENTATION A 22-year-old woman with a history of recurrent stone disease and a lumbal meningomyelocele underwent bilateral open pyelolithotomy for bilateral staghorn ...
PURPOSE To describe the incidence of and risk factors for acute cystitis among nondiabetic and diabetic postmenopausal women. METHODS We conducted a population-based, prospective cohort study of 1017 postmenopausal women, aged 55 to 75 years, who were enrolled in a health maintenance organization and followed for 2 years. A wide range of behavioral and physiologic exposures were assessed at baseline interview and follow-up clinic visits; the main outcome measure was microbiologically confirmed ...
  • Ainory Peter Gesase,
  • Annals of anatomy = Anatomischer Anzeiger : official organ of the Anatomische Gesellschaft
  • 2007
The current observations have documented rare vascular anomalies in the right and left kidneys from a male and female cadaver, respectively. In the female left kidney in addition to being supplied by the normal renal artery and vein it contained a left lower polar renal artery and vein. The polar artery took origin from the inferior mesenteric artery to supply the lower pole and was drained by the left lower polar vein that opened into the left common iliac vein. The right kidney from a male cad ...
OBJECTIVE We report a case of laparoscopic nephrectomy of a cross-fused ectopic kidney in a 4-year-old girl with renal hypertension and Fanconi anemia. MATERIALS AND METHODS We performed a transperitoneal laparoscopy. Ectopic kidney resection was done after dissection of the pathological kidney and after clamping vessels, using an ultrasonic device. Hospitalization time was 4 days. RESULTS At 6 months, blood pressure was normalized and the patient showed an adequate growth curve. CONCLUSIO ...
PURPOSE Fibrin sealant has been demonstrated to be safe and effective as a hemostatic agent and urinary tract sealant. We assessed the ability of fibrin sealant to facilitate tubeless management after uncomplicated percutaneous nephrolithotomy (PCNL). MATERIALS AND METHODS Eight consecutive patients underwent single access tubeless PCNL for renal calculi in a total of 9 renal units in a 2-month period. An additional patient with distal ureteral obstruction underwent antegrade ureteroscopy for ...
Common bile duct and pancreatic injury are rare complications following extracorporeal shock wave lithotripsy. We reported a case of peripancreatic abscess with inflammation change of common bile duct and pancreatic head following extracorporeal shock wave lithotripsy for right renal stone. Its anatomical location and subsequent clinical course suggest it was related to trauma caused by the shock wave. It should be considered a relative contraindication to apply extracorporeal shock wave lithotr ...
Kidney transplantation is a well codified operation. The way to reduce surgical complications (urological and vascular) lies in a precise knowledge of the anatomy of the renal pedicle, as well as of the ureter and its vascularization. The choice of a site for implantation depends on anatomical arguments which aim at using a well vascularised ureter, and so a short one, and a renal pedicle without tension, with therefore a long or extended renal vein. A privileged site for transplantation is the ...
The relationship of asymptomatic microhematuria to urologic disease in a general population was studied by using population-based data resources in Rochester, Minnesota, to identify 635 patients with isolated asymptomatic microhematuria (AMs) and 635 controls. Prevalences of minor urologic diseases were 41.8% in those with positive tests (AMs) and 36.9% in controls (p greater than 0.05). Moderately serious urologic diseases were found in 16.7% of AMs and 9.2% of controls (p = 0.006); significant ...
Effective shockwave lithotripsy requires accurate targeting of the stone throughout the course of treatment. Stone movement secondary to respiratory movement can make this more difficult. In vitro work has shown that stone motion outside the focal region reduces the efficacy of stone fragmentation; however, there are few clinical data on the degree of stone movement in patients during treatment. To investigate this, X-ray fluoroscopic images of the kidney and ureteral stones at the upper and low ...
Hyperoxaluria type I (HPI) is a metabolic disorder secondary to liver alanine glyoxylate aminotransferase deficiency. Renal failure occurs due to the excessive production and precipitation of oxalate in the kidney. Combined liver-renal transplantation is the correct treatment for this condition when end-stage renal failure occurs since in renal transplantation alone the risk of recurrence of the same pathology in the transplanted kidney would be high. We determined the calcification surrounding ...
BACKGROUND Renal calcification is a known complication of Furosemide therapy. METHODS We describe 3 children who were diagnosed with renal calculi, not nephrocalcinosis, following the use of Furosemide for 4 weeks. All the infants (24, 18, and 8 months) had successful repair/palliation of congenital heart disease. The dose of Furosemide was 1-2 mg/kg/day and the duration between starting treatment and development of hematuria was 4 weeks. RESULTS In all 3 patients renal ultrasound confirmed ...
Our purpose here is to test the hypothesis that Randall's plaques, calcium phosphate deposits in kidneys of patients with calcium renal stones, arise in unique anatomical regions of the kidney, their formation conditioned by specific stone-forming pathophysiologies. To test this hypothesis, we performed intraoperative biopsies of plaques in kidneys of idiopathic-calcium-stone formers and patients with stones due to obesity-related bypass procedures and obtained papillary specimens from non-stone ...
Kidney stone formation is a multifactorial disease in which the defence mechanisms and risk factors are imbalanced in favour of stone formation. We have proposed a novel infectious agent, mineral forming nanobacteria (NB), to be active nidi that attach to, invade and damage the urinary epithelium of collecting ducts and papilla forming the calcium phosphate center(s) found in most kidney stones. Stone formation may proceed in urine supersaturated with calcium phosphate, calcium oxalate and uric ...
The effects of urines from 36 healthy subjects and 86 calcium oxalate renal stone formers on calcium oxalate monohydrate crystallization kinetics were studied using a seeded crystal growth method in which the solubility, the growth and the agglomeration of the crystals are measured as three separate and system-independent parameters. The urines of healthy subjects were found to increase the solubility and to strongly inhibit the growth and the agglomeration of calcium oxalate monohydrate crystal ...
Intracorporeal lithotripsy is used to treat a high percentage of urinary calculi. Urinary calculi may contain bacteria, which might cause septicemia after lithotripsy; however, little is known about the effects of lithotripters on the viability of microorganisms inside renal calculi. The objectives of this study were to evaluate the bactericidal effect, and the potential effect on intra-bacterial protein release of four different intracorporeal lithotripters on Escherichia coli (E. coli) inocula ...
Semantic Scholar extracted view of "Resection of tumors of the pararenal inferior vena cava with in situ perfusion of the right kidney and graft replacement with bovine pericardium." by Ricardo J Mondragón-Sánchez et al. ...
PURPOSE To evaluate the treatment success rate of flexible ureterorenoscopy (URS) for opaque and non-opaque renal stones. MATERIALS AND METHODS Ninety-four patients, who underwent flexible URS for renal stones between October 2012 and January 2014, were included. The patients were divided into two groups according to stone radiolucency. The patients were evaluated with preoperative and postoperative (at the weeks 4) computed tomography. Success of the treatment was defined as stone-free status ...
Fluoroscopically guided, transconduit retrograde catheterization of ureters that have been diverted to a bowel conduit is often feasible in patients with patient ureteroenteral anastomoses who might otherwise require a percutaneous nephrostomy (PCN) for reasons other than high-grade anastomotic obstruction. This procedure was attempted on 14 occasions and successfully accomplished on 12. In 11 of these cases, retrograde catheterization obviated PCN to provide renal drainage for a partially obstr ...