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Association between the imaging characteristics of renal abscess and vesicoureteral reflux

Takahiro Hosokawa1, Yutaka Tanami1, Yumiko Sato1

  • 1Department of Radiology, Saitama Children's Medical Center, 1-2 Shintoshin Chuo-ku Saitama, Saitama, 330-8777, Japan.

Journal of Infection and Chemotherapy : Official Journal of the Japan Society of Chemotherapy
|June 10, 2023
PubMed

Insights

Pediatric renal abscesses with vesicoureteral reflux (VUR) are linked to subcapsular fluid collection. Prompt VUR detection and treatment are crucial for children with these imaging findings.

Area of Science:

  • Pediatric Nephrology
  • Radiology
  • Infectious Diseases

Background:

  • Renal abscesses are uncommon in children.
  • Computed tomography (CT) is vital for diagnosing renal abscesses.
  • Understanding imaging differences based on vesicoureteral reflux (VUR) is important.

Purpose of the Study:

  • To compare CT imaging characteristics of renal abscesses in children with and without VUR.
  • To identify specific imaging findings associated with VUR in pediatric renal abscesses.

Main Methods:

  • Retrospective review of 13 pediatric patients with renal abscesses.
  • Categorization into groups with and without VUR.
  • Analysis of CT findings including fluid collection, pole involvement, and lesion multiplicity.
  • Statistical comparison using Fisher's exact test.

Main Results:

  • Nine patients (69.2%) had VUR.
  • Subcapsular fluid collection was significantly more common in patients with VUR (9/9) compared to those without (1/4; p=0.014).
  • Multiple renal lesions were non-significantly more frequent in the VUR group.

Conclusions:

  • Vesicoureteral reflux is associated with subcapsular fluid collection in pediatric renal abscesses.
  • The presence of multiple lesions may also indicate VUR.
  • These findings underscore the importance of evaluating for VUR in children with specific CT findings of renal abscess.
Abstract

Keywords:
CTChildrenRenal abscessUrinary tract infectionVUR

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