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Related Concept Videos

Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations01:26

Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations

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Renal calculi, commonly termed kidney stones, are crystalline solid masses that form in the kidneys but can occur at any point within the urinary system, encompassing the kidneys, ureters, bladder, and urethra.The pathophysiology of renal stones involves several key factors: supersaturation of the urine with stone-forming constituents, changes in urine pH, a decrease in urine volume, and the presence of substances that promote or inhibit stone formation.Supersaturation of Urine: This is the...
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Urinary Tract Calculi I: Introduction01:28

Urinary Tract Calculi I: Introduction

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Renal calculi, or kidney stones, are solid deposits of minerals and salts formed inside the kidneys. In medical terminology, "calculus" refers to the stone itself, while "lithiasis" describes the process of stone formation. Depending on their location within the urinary system, these stones may be classified as either urolithiasis, when situated within the urinary tract, or nephrolithiasis, when located within the kidneys. Each term signifies the specific impact of the stone.Predisposition...
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Urinary Tract Calculi III: Medical Management01:30

Urinary Tract Calculi III: Medical Management

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The diagnosis of renal calculi involves several imaging techniques, including non-contrast CT scans and ultrasound. These methods help visualize kidney stones, assess their size and location, and detect possible obstructions. Additionally, Measuring urine pH is useful for diagnosing specific stone types, such as struvite (alkaline pH) and uric acid stones (acidic pH). Cystine stones are primarily linked to cystinuria, a genetic condition. A urinalysis helps detect blood in the urine (hematuria)...
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Urinary Tract Calculi IV: Nutrition Therapy and Prevention01:27

Urinary Tract Calculi IV: Nutrition Therapy and Prevention

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Management of renal calculi focuses on effective strategies like tailored nutrition and hydration therapy. Adjusting diet and fluid intake reduces stone formation and recurrence, making these interventions simple yet powerful in kidney stone prevention and management.Understanding Kidney StonesKidney stones form when calcium, oxalate, uric acid, and cystine concentrate and crystallize in urine. Factors contributing to their formation include genetic predisposition, certain medical conditions,...
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Urinary Tract Calculi VI: Surgical Management01:25

Urinary Tract Calculi VI: Surgical Management

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Procedures for Kidney StonesMedical intervention is necessary when kidney stones or renal calculi are too large to pass spontaneously (typically greater than 5 millimeters) when stones are accompanied by symptomatic infection (such as fever or pyelonephritis), when they impair kidney function, or when they cause persistent symptoms like severe pain, nausea, or urinary retention. Additionally, patients with only one kidney or those who cannot be treated with medical management also require...
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Kidney Structure01:45

Kidney Structure

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The kidneys are two large bean-shaped organs located in the upper abdomen. They filter the blood several times a day to remove toxins and rebalance water and electrolytes of the circulatory system via the renal veins. The kidneys receive blood directly from the heart via the renal arteries. These arteries enter the kidney at the hilum, the concave surface of the bean, where they branch and divide into smaller vessels and capillaries.
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Related Experiment Video

Updated: Mar 21, 2026

Estimation of Urinary Nanocrystals in Humans using Calcium Fluorophore Labeling and Nanoparticle Tracking Analysis
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Estimation of Urinary Nanocrystals in Humans using Calcium Fluorophore Labeling and Nanoparticle Tracking Analysis

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Kidney stones.

Saeed R Khan1, Margaret S Pearle2, William G Robertson3,4

  • 1Department of Urology, University of Florida, 1600 SW Archer Road, Gainesville, Florida 32610, USA.

Nature Reviews. Disease Primers
|May 19, 2016
PubMed
Summary
This summary is machine-generated.

Kidney stones, primarily calcium oxalate, are common mineral deposits. Effective prevention strategies are needed to reduce high recurrence rates and associated health risks like chronic kidney disease.

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Area of Science:

  • Nephrology
  • Urology
  • Mineralogy

Background:

  • Kidney stones are mineral deposits in the renal pelvis, composed of crystalline and organic matter.
  • Calcium oxalate is the most common stone type, often forming on Randall's plaques.
  • Stone formation is prevalent and increasing, with significant recurrence rates.

Purpose of the Study:

  • To review the current understanding of kidney stone formation, risk factors, and management.
  • To highlight the evolution of treatment modalities for symptomatic kidney stones.
  • To emphasize the need for improved recurrence prevention strategies.

Main Methods:

  • Literature review of kidney stone epidemiology, pathophysiology, and treatment.
  • Analysis of risk factors including obesity, diabetes, and metabolic syndrome.
  • Examination of current and emerging management and prevention approaches.

Main Results:

  • Kidney stone prevalence is high and rising, with up to 50% recurrence within 5 years.
  • Risk factors include obesity, diabetes, hypertension, and metabolic syndrome.
  • Minimally invasive treatments have improved outcomes and quality of life.

Conclusions:

  • Kidney stones pose a significant public health challenge with serious potential complications.
  • Recurrence prevention requires a multifaceted approach, including lifestyle changes and targeted therapies.
  • Further research into stone formation mechanisms is crucial for developing novel preventative drugs.