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Asymptomatic renal stones are identified in 8-10% of screened populations. With the increasing utilization of CT, the number of patients seeking urologic care for incidentally diagnosed renal calculi is likely to increase. Such patients present an important management dilemma: differentiating those to treat surgically from those who can be safely observed. Observational studies have revealed that approximately 50% of asymptomatic stones will progress, but most will not require surgery. Stones >15 mm in diamater and located in the renal pelvis are at highest risk of progression. Although no guidelines exist for the optimal monitoring regimen for asymptomatic stones, follow-up studies may include serum creatinine, plain radiography, ultrasonography, and CT. Shock wave lithotripsy (SWL) does not seem to offer significant benefit over observation for asymptomatic calyceal stones. Percutaneous nephrolithotomy does improve stone-free rates compared to SWL or observation. Additional research is needed to characterize the role of ureteroscopic management of asymptomatic renal stones.
Duke University Medical Center, Division of Urologic Surgery, 200 Trent Drive, DUMC 3167, Durham, NC 27710, USA.
This article was published in the following journal.
Name: Nature reviews. Urology
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The European Association of Urology (EAU) and the American Urological Association (AUA) guidelines recommend percutaneous nephrolithotomy (PCNL) as the first-line treatment of renal stones greater tha...
We performed extracorporeally induced destruction of kidney stones on 72 patients. No complications have resulted from the tissue exposure to high energy shock waves. Clearance studies before and afte...
A 40-year-old woman presents to the emergency department after a motor vehicle accident, and a CT scan revealed no injuries but incidentally notes three non-obstructing stones in the left kidney of 3,...
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 ...
Kidney stones are very common. They affect 3-5% of the population in the United States. Many people are hospitalized for the treatment of kidney stones and some may die. Better understan...
To evaluate the effectiveness of RIRS (retrograde intrarenal surgery) and ESWL (extracorporeal shockwaves lithotripsy) in the treatment of renal stone ranging form 6 to 20 mm size.
This study centers on the treatment of low pole renal stones by flexible ureteroscope and intends to find the key anatomical parameters using a prospective, randomized multi-center trial d...
to assess safety, efficacy of Flexible ureteroscopy (FURS) holmium:YAG laser lithotripsy (LL) compared to extracorporeal shockwave lithotripsy (ESWL) in management of lower calyceal stones...
The aim of this research is to use a controlled laboratory setting to determine whether bacteria isolated from kidney stones of patients play a role in the formation of non-infectious kidn...
Stones in the URETER that are formed in the KIDNEY. They are rarely more than 5 mm in diameter for larger renal stones cannot enter ureters. They are often lodged at the ureteral narrowing and can cause excruciating renal colic.
Organs or parts of organs surgically formed from nearby tissue to function as substitutes for diseased or surgically removed tissue.
The prototypical uricosuric agent. It inhibits the renal excretion of organic anions and reduces tubular reabsorption of urate. Probenecid has also been used to treat patients with renal impairment, and, because it reduces the renal tubular excretion of other drugs, has been used as an adjunct to antibacterial therapy.
A chronic inflammatory condition of the KIDNEY resulting in diffuse renal destruction, a grossly enlarged and nonfunctioning kidney associated with NEPHROLITHIASIS and KIDNEY STONES.
A diuretic and renal diagnostic aid related to sorbitol. It has little significant energy value as it is largely eliminated from the body before any metabolism can take place. It can be used to treat oliguria associated with kidney failure or other manifestations of inadequate renal function and has been used for determination of glomerular filtration rate. Mannitol is also commonly used as a research tool in cell biological studies, usually to control osmolarity.
Nephrology - kidney function
Nephrology is a specialty of medicine and pediatrics that concerns itself with the study of normal kidney function, kidney problems, the treatment of kidney problems and renal replacement therapy (dialysis and kidney transplantation). Systemic conditions...
Chronic kidney disease (CKD), also known as chronic renal disease, is a progressive loss in renal function over a period of months or years. The symptoms of worsening kidney function are non-specific, and might include feeling generally unwell and experi...