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Related Concept Videos

Disorders of the Urinary System01:20

Disorders of the Urinary System

380
The urinary system is responsible for eliminating waste and excess fluids from the body. However, disorders of the urinary system can arise due to various reasons like infections, stress, age, congenital abnormalities, and lifestyle.
Urinary tract infections (UTIs) are one of the most common urinary system disorders. They are caused by bacteria that enter the urethra and can spread to the bladder resulting in cystitis. Pyelonephritis is the result of a UTI that has ascended to the level of the...
380
Acute Kidney Injury II: Pathophysiology01:29

Acute Kidney Injury II: Pathophysiology

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Acute kidney injury (AKI) causes are categorized into three primary categories based on the location of the injury: prerenal, intrarenal (or intrinsic), and postrenal causes. This classification guides clinical management and illustrates how different pathways can impair kidney function.Etiology and Pathophysiology of Acute Kidney Injury1. Prerenal causesEtiology: Prerenal Acute Kidney Injury, the most common type, occurs when reduced blood flow to the kidneys decreases filtration capacity...
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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...
15
Ureters01:22

Ureters

577
The ureters are retroperitoneal tubes located on either side of the vertebral column. They are responsible for transporting urine from each kidney to the urinary bladder. These tubes have thick walls and are approximately 25-30 cm long. Their diameter is around 10 mm at the renal pelvis, gradually narrowing to 1 mm as the ureter obliquely enters the posterior bladder wall through the ureteric orifices. The shape of these orifices is slit-like, which helps to prevent urine backflow toward the...
577
Imaging Studies V: Intravenous Urography and Retrograde Pyelography01:22

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

62
IntroductionIntravenous Urography (IVU) and Retrograde Pyelography (RP) are important diagnostic imaging techniques used to evaluate the urinary system. These methods help identify structural abnormalities, obstructions, and functional issues in the kidneys, ureters, and bladder. Both procedures use iodine-based contrast media to enhance the visibility of urinary tract structures on X-ray images, though they differ in their methods and indications.1. Intravenous Urography (IVU)Intravenous...
62
Anatomy of the Genitourinary System I: Kidneys and Ureters01:11

Anatomy of the Genitourinary System I: Kidneys and Ureters

46
The upper urinary system comprises two kidneys and two ureters, which are crucial in filtering blood and forming urine.KidneysLocation and Structure:The kidneys are two bean-shaped organs positioned behind the peritoneum on either side of the spine.Kidneys are between the 12th thoracic (T12) and the 3rd lumbar (L3) vertebrae.The position of the liver causes the right kidney to sit slightly lower than the left.Protective Layers:Each kidney is enveloped in a tough, fibrous membrane called the...
46

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Related Experiment Video

Updated: Jul 25, 2025

Assessing Urinary Tract Junction Obstruction Defects by Methylene Blue Dye Injection
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Ureteropelvic Junction Obstruction/Hydronephrosis.

Peter Y Cai1, Richard S Lee2

  • 1Department of Urology, Boston Children's Hospital, 300 Longwood Avenue, Hunnewell 390, Boston, MA 02115, USA.

The Urologic Clinics of North America
|June 29, 2023
PubMed
Summary
This summary is machine-generated.

Congenital hydronephrosis management uses the Urinary Tract Dilation scoring system. While many pediatric cases resolve with monitoring, some require surgery for kidney function decline, with robotic pyeloplasty showing promise.

Keywords:
HydronephrosisPyeloplastyRobotic surgeryUreteropelvic junction obstruction

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Area of Science:

  • Pediatric Urology
  • Medical Imaging in Urology
  • Surgical Innovation

Background:

  • Congenital hydronephrosis is a common pediatric condition.
  • Ureteropelvic junction obstruction is a primary cause.
  • Management relies on the Urinary Tract Dilation scoring system.

Purpose of the Study:

  • To review the classification and management of congenital hydronephrosis.
  • To highlight the role of the Urinary Tract Dilation scoring system.
  • To discuss surgical indications and the utility of robotic-assisted pyeloplasty.

Main Methods:

  • Review of current literature and clinical guidelines.
  • Analysis of management strategies for pediatric hydronephrosis.
  • Evaluation of outcomes associated with robotic-assisted pyeloplasty.

Main Results:

  • The Urinary Tract Dilation system aids in classifying and managing hydronephrosis.
  • Conservative management is often successful, but surgical intervention is sometimes necessary.
  • Robotic-assisted pyeloplasty demonstrates high success rates and low complications.

Conclusions:

  • Effective management of congenital hydronephrosis involves risk stratification using the Urinary Tract Dilation system.
  • Further research into predictive algorithms and biomarkers is needed for surgical candidate selection.
  • Robotic-assisted pyeloplasty is an effective and increasingly adopted surgical technique for ureteropelvic junction obstruction.