The coexistence of ureteropelvic junction obstruction and reflux

Insights

Ureteropelvic junction obstruction and vesicoureteral reflux can coexist in children. Diagnosis requires specific imaging, and surgical order (pyeloplasty first) is crucial for successful treatment.

Area of Science:

  • Pediatric Urology
  • Diagnostic Imaging
  • Surgical Management

Background:

  • Ureteropelvic junction obstruction (UPJO) is the most common upper urinary tract anomaly in children.
  • Vesicoureteral reflux (VUR) is the most common lower urinary tract anomaly in children.
  • The coexistence of UPJO and VUR is uncommon but clinically significant.

Observation:

  • This study observed 21 cases of coexisting UPJO and VUR over a 10-year period.
  • Significant UPJO with mild VUR can mimic severe VUR, necessitating pyeloplasty over reimplantation.
  • Significant UPJO and significant VUR may require both surgical interventions.

Findings:

  • The order of surgical intervention is critical when both UPJO and VUR are present; pyeloplasty should be performed first.
  • Diagnostic imaging, including voiding cystography and excretory urography (with diuretic challenges if needed), is essential for accurate diagnosis and severity assessment.
  • Imaging techniques help differentiate between isolated UPJO, isolated VUR, and the combined condition.

Implications:

  • Accurate diagnosis and appropriate surgical sequencing are vital for optimal outcomes in children with combined UPJO and VUR.
  • Understanding the interplay between these conditions improves surgical planning and patient management.
  • This knowledge aids pediatric urologists in selecting the correct surgical approach, avoiding unnecessary procedures, and ensuring effective treatment.

Related Concept Videos

Ureters01:22

Ureters

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...
Anatomy of the Genitourinary System II: Bladder and Urethra01:19

Anatomy of the Genitourinary System II: Bladder and Urethra

The lower urinary system consists of the urinary bladder and urethra, which are essential in storing and expelling urine from the body. Together with the internal and external sphincters, these structures work together to regulate urination effectively.Anatomy of the BladderThe urinary bladder is a muscular, stretchable organ behind the pubic bone and in front of the rectum. In females, the bladder is positioned anterior to the vagina and inferior to the uterus, while in males, it is located...
Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations01:26

Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations

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...
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...
Imaging Studies V: Intravenous Urography and Retrograde Pyelography01:22

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

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...
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...