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Related Concept Videos

Urinary Tract Calculi I: Introduction01:28

Urinary Tract Calculi I: Introduction

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...
Urologic Endoscopic Procedure: Cystoscopic Examination01:28

Urologic Endoscopic Procedure: Cystoscopic Examination

Meaning of Cystoscopic Examination:Cystoscopy is an essential diagnostic tool in urology that is used to assess the structure and function of the genitourinary system. It provides a direct view of the urethra, bladder, and, in some cases, the ureteral openings. This procedure helps detect structural abnormalities, infections, cancers, and blockages in the urinary tract. There are two types of cystoscopy:Flexible cystoscopy is commonly performed in outpatient settings due to its less invasive...
Urinary Tract Calculi III: Medical Management01:30

Urinary Tract Calculi III: Medical Management

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)...
Imaging Studies VI: Voiding Cystourethrography and Cystography01:22

Imaging Studies VI: Voiding Cystourethrography and Cystography

Voiding Cystourethrography (VCUG) and Cystography are specialized radiographic procedures used to examine the structure and function of the bladder and urethra.Voiding Cystourethrography (VCUG)A Voiding Cystourethrogram (VCUG) is a diagnostic imaging procedure that assesses the anatomy and function of the lower urinary tract. It focuses on the bladder, bladder neck, and urethra, helping detect abnormalities such as vesicoureteral reflux (VUR)—the backward or reverse flow of urine into the...
Urinary Tract Calculi VI: Surgical Management01:25

Urinary Tract Calculi VI: Surgical Management

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...
Acute Pyelonephritis II: Diagnostic Studies and Management01:28

Acute Pyelonephritis II: Diagnostic Studies and Management

Introduction:For diagnosing acute pyelonephritis, a comprehensive patient history is collected to identify symptoms such as dysuria, frequent or urgent urination, flank pain, or costovertebral angle (CVA) tenderness that may suggest a kidney infection.Physical ExaminationDuring the physical examination, CVA tenderness is assessed. This involves gentle percussion over the costovertebral angle, where tenderness often indicates a kidney infection.Diagnostic TestsUrinalysis: Used to identify white...

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Related Experiment Video

Updated: Jun 25, 2026

Microscopic Cyst Resection for the Treatment of Patients Diagnosed with Epididymal Cyst
03:10

Microscopic Cyst Resection for the Treatment of Patients Diagnosed with Epididymal Cyst

Published on: March 31, 2023

[Cystine lithiasis: retrospective study about 25 cases].

R Belhadj1, O Marrakchi, L Zerelli

  • 1Service de Biochimie, Hôpital Charles Nicolle, Tunis.

La Tunisie Medicale
|February 17, 2009
PubMed
Summary
This summary is machine-generated.

This study identifies the clinical and biochemical traits of cystinuria in Tunisia, revealing its 1.5% frequency and common renal stone characteristics. Early diagnosis and management are crucial for patients with this severe kidney condition.

Related Experiment Videos

Last Updated: Jun 25, 2026

Microscopic Cyst Resection for the Treatment of Patients Diagnosed with Epididymal Cyst
03:10

Microscopic Cyst Resection for the Treatment of Patients Diagnosed with Epididymal Cyst

Published on: March 31, 2023

Area of Science:

  • Nephrology
  • Urology
  • Medical Genetics

Context:

  • Cystinuria is a rare inherited metabolic disorder characterized by the formation of cystine stones in the kidneys.
  • Recurrent kidney stones in cystinuria can lead to severe renal damage and complications if not managed promptly.

Purpose:

  • To report and characterize the clinical and biochemical features of cystinuria in the Tunisian population.
  • To establish the prevalence and stone characteristics of cystinuria in a Tunisian cohort.

Summary:

  • A study of 25 cystinuria cases (16 adults, 9 children) from 1995-2006 in Tunisia.
  • Cystinuria diagnosis was confirmed via spectrophotometric stone analysis, urinary crystal studies, and the Brandts test.
  • The prevalence of cystinuria was found to be 1.5% (25/1586), with 89% of stones being renal and 23% bilateral.

Impact:

  • Findings contribute to a better understanding of cystinuria epidemiology in North Africa.
  • Highlights the need for early diagnosis, consistent monitoring, and adherence to dietary recommendations for improved patient outcomes.
  • Provides data to inform clinical guidelines and management strategies for cystinuria patients in the region.