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A primary psoas abscess with renal fistulization: A rare case in a 2-year-old child

Abourak Chaimae1, Gray Tsioukaka Delors1, Bahha Soukaina1

  • 1Department of Radiology, Mother-Child, Faculty of Medicine and Pharmacy of Rabat, Children's Hospital, Ibn Sina University Hospital, Mohammed V University, Rabat, Morocco.

Radiology Case Reports
|April 28, 2025
PubMed

Insights

Primary psoas abscess in children is rare but serious. This case details a 2-year-old with a kidney complication, emphasizing early diagnosis and treatment for pediatric lumbar masses.

Area of Science:

  • Pediatric Surgery
  • Infectious Diseases
  • Medical Imaging

Background:

  • Iliopsoas abscesses are uncommon pediatric conditions with high morbidity and mortality risks.
  • Prompt diagnosis and treatment are crucial for favorable outcomes.

Observation:

  • A previously healthy 2-year-old male presented with a painless left lumbar mass and low-grade fever.
  • Contrast-enhanced CT revealed a multiloculated retroperitoneal abscess involving the psoas and quadratus lumborum muscles, extending into the kidney.

Findings:

  • Laboratory tests indicated leukocytosis and elevated inflammatory markers.
  • Surgical drainage identified Staphylococcus aureus as the causative pathogen.
  • The abscess complicated with fistulization into the ipsilateral kidney.

Implications:

  • This case underscores the importance of considering psoas abscess in pediatric lumbar masses.
  • Early imaging and intervention are vital to prevent severe complications like renal fistulization.
  • Effective management involves surgical drainage and appropriate antibiotic therapy.

Keywords:
ChildFistulaKidneyPsoas abscessStaphylococcus aureus

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