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Related Concept Videos

Urinary Tract Infection I: Introduction01:26

Urinary Tract Infection I: Introduction

379
Urinary tract infections (UTIs) impact various parts of the urinary system, including the kidneys, ureters, bladder, and urethra. These infections are generally bacterial, with Escherichia coli being the most common causative agent, often originating from the gastrointestinal tract. However, other bacteria, such as Staphylococcus saprophyticus, Klebsiella pneumoniae, and Proteus mirabilis, are also known to cause UTIs. The type, location, and underlying complexity of the UTI guide both...
379
Urinary Tract Calculi I: Introduction01:28

Urinary Tract Calculi I: Introduction

286
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...
286
Urinary Tract Infection II: Pathophysiology01:25

Urinary Tract Infection II: Pathophysiology

404
The pathophysiology of urinary tract infections (UTIs) encompasses several progressive stages, beginning with bacterial colonization and culminating in potential systemic complications if untreated. UTIs are primarily initiated by bacteria, such as Escherichia coli, which often originate from the gastrointestinal tract and migrate to the urinary system through the periurethral area. This migration can occur via several routes, including improper hygiene practices, sexual activity, or...
404
Urinary Tract Calculi V: Nursing Management01:28

Urinary Tract Calculi V: Nursing Management

172
AssessmentSubjective Data: Obtain a detailed health history, including any recent or chronic urinary tract infections, periods of immobilization, previous episodes of renal calculi, and medical conditions such as gout, benign prostatic hyperplasia, or hyperparathyroidism. Review the medication history for drugs that may influence stone formation, including allopurinol, analgesics, loop diuretics, or thiazide diuretics. Document the use of long-term indwelling catheters and any past surgical...
172
Urinary Tract Calculi VI: Surgical Management01:25

Urinary Tract Calculi VI: Surgical Management

197
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...
197
Urinary Tract Calculi III: Medical Management01:30

Urinary Tract Calculi III: Medical Management

123
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)...
123

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Related Experiment Video

Updated: Dec 8, 2025

Technical Modification of the Terminal Ureter During Total Transperitoneal Laparoscopic Nephroureterectomy for Upper Urinary Tract Urothelial Carcinoma
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Risk stratification for upper tract urinary carcinoma.

Daniel Benamran1,2, Thomas Seisen2, Elias Naoum2

  • 1Division of Urology, Geneva University Hospitals, Geneva, Switzerland.

Translational Andrology and Urology
|September 18, 2020
PubMed
Summary

Upper tract urothelial carcinoma (UTUC) requires improved risk stratification for personalized treatment. Current prognostic factors need better validation to guide kidney-sparing or radical therapies effectively.

Keywords:
Cancerrisk factorsstratificationsurvivalurothelial

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Area of Science:

  • Urology
  • Oncology

Background:

  • Upper tract urothelial carcinoma (UTUC) is a rare and diverse malignancy.
  • Current risk stratification methods for UTUC have limitations in predicting outcomes accurately.

Purpose of the Study:

  • To critically review existing therapeutic strategies for UTUC.
  • To propose an updated risk-stratification system for UTUC.
  • To explore advancements in diagnostic tools and treatment modalities for UTUC.

Main Methods:

  • A non-systematic literature review was conducted using the Medline database.
  • Search terms included "upper tract urothelial carcinoma" combined with terms related to prognostic factors, risk stratification, and treatment.
  • Analysis focused on patient-related and tumor-related risk factors, as well as biomarkers.

Main Results:

  • Identified numerous patient-related (e.g., BMI, smoking) and tumor-related (e.g., stage, grade) risk factors for UTUC.
  • Noted that many proposed prognostic factors and predictive tools lack sufficient accuracy and validation.
  • Kidney-sparing approaches (endoscopic management, segmental ureterectomy) are viable for select cases, while radical nephroureterectomy remains standard for high-grade disease.

Conclusions:

  • A revised, more precise risk classification (low, intermediate, high, very high) is needed for UTUC.
  • Further research and subgroup analysis are essential to validate new risk factors and personalize UTUC treatment.
  • Integration of novel diagnostic tools and adjuvant therapies may enhance outcomes for UTUC patients.