Introduction

Learning objectives

Understand the mechanism of vesicoureteral reflux and its relationship with febrile urinary tract infections.
Know the general grading classification.
Recognize that the goal of treatment is to prevent febrile infections and protect the kidney, not simply to eliminate the reflux.

Video lesson

▶

Video pending upload (embedded YouTube)

Summary

What is it?

Vesicoureteral reflux (VUR) is the retrograde passage of urine from the bladder into the ureter and eventually into the kidney.

Normally, the junction between the ureter and the bladder functions as an anti-reflux mechanism.

Why are we concerned?

The combination of reflux + febrile urinary tract infections can promote kidney damage in certain patients.

How is it discovered?

Frequently during the workup of a child who has had febrile urinary tract infections.

Grades

VUR is traditionally classified from grade I to V.

In general terms:

low grades → less dilation;
high grades → greater dilation and alteration of the urinary tract.

Does everyone need surgery?

No.

A proportion of reflux cases, especially some low-grade ones, may resolve spontaneously with growth.

Management depends on:

age;
grade;
infections;
renal function;
renal scars;
bladder and bowel function;
clinical course.

Strategies may include:

observation;
treatment of bladder and bowel dysfunction;
antibiotic prophylaxis in selected patients;
endoscopic treatment;
surgery.

Key concept

The goal is not simply to "eliminate the reflux". The main goal is to prevent febrile infections and protect the kidney.

PDF

⬇ Download lesson summary

Downloadable PDF pending upload.

Practical algorithm

Non-retractile foreskin in a young child, without scarring or complications → probably physiological → do not force.
Retracted foreskin that cannot be returned + edema → paraphimosis → emergency.
Testicle outside the scrotum after the first months of life → refer → do not wait years.
Painless, fluctuant scrotal swelling → consider communicating hydrocele.
Adolescent with varicocele → assess testicular development and volume.
Infant with fever without a source → consider urinary tract infection.
Recurrent febrile UTI → assess the need to investigate urinary anomalies/VUR.
Sudden testicular pain → urgently rule out testicular torsion.

In Pediatric Urology, the primary care physician does not need to resolve every condition: they need to distinguish the physiological from the pathological, and recognize when to observe, when to investigate, when to refer and, above all, when to act urgently.

Clinical case

Content pending upload Progressive clinical case focused on decision-making.

Self-assessment

Questions pending upload 5–10 multiple-choice questions on this lesson.

References

Links pending upload References to PubMed, DOI, scientific society guidelines and journals.

Vesicoureteral reflux