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Published on: February 9, 2011
Primary pyogenic psoas abscess in children
1Department of Surgery, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India.
Insights
Primary pyogenic psoas abscess is a common condition often missed, but ultrasonography (US) aids diagnosis. Prompt treatment with drainage and antibiotics leads to full recovery in pediatric patients.
Area of Science:
- Pediatric Infectious Diseases
- Musculoskeletal Infections
- Diagnostic Imaging
Background:
- Primary pyogenic psoas abscess is frequently overlooked, often misdiagnosed due to its association with tuberculous spondylitis.
- This condition is common, especially in tropical regions, and presents diagnostic challenges.
Purpose of the Study:
- To highlight the clinical features, diagnostic methods, and treatment outcomes of primary pyogenic psoas abscess in children.
- To emphasize the utility of ultrasonography (US) in diagnosing psoas abscesses.
Main Methods:
- A retrospective review of 55 pediatric cases (0-12 years) diagnosed with primary pyogenic psoas abscess.
- Clinical presentation, diagnostic imaging (primarily US), treatment modalities, and patient outcomes were analyzed.
Main Results:
- Pain and hip flexion were the most common presenting symptoms in pediatric patients.
- Ultrasonography (US) proved diagnostic in all cases where performed.
- Treatment involving extraperitoneal drainage, antibiotics (targeting Staphylococcus aureus), and skin traction resulted in complete resolution for most patients.
Conclusions:
- Primary pyogenic psoas abscess is a distinct clinical entity in children, often arising de novo.
- Early diagnosis via ultrasonography and prompt surgical and antibiotic management lead to favorable outcomes.
Abstract:
Primary pyogenic psoas abscess, although quite a common condition, particularly in the tropics, is often overlooked as a clinical entity, probably because a psoas abscess has been traditionally associated with tuberculous spondylitis. The abscess is easily diagnosed by ultrasonography (US). Treatment by open drainage and antibiotics effective against Staphylococcus aureus results in complete reversal of symptoms and signs. In our series of 55 cases in the pediatric age group (0-12 years), pain and flexion at the hip were the most frequent clinical features at presentation. US was diagnostic in all cases in which it was performed. All except 1 patient showed complete resolution with extraperitoneal drainage, antibiotics, and skin traction. Although 4% of the cases were associated with suppurative external-iliac lymphadenitis, the remaining ones arose de novo in the psoas sheath, suggesting a primary pyomyositis of the psoas muscle.
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