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[Pigmented villonodular synovitis with polyarticular presentation]

A García Sánchez1, M Utrilla Utrilla, J L Casals Sánchez

  • 1Unidad de Reumatología, Hospital Torrecárdenas, Almería.

Anales De Medicina Interna (Madrid, Spain : 1984)
|July 1, 1996
PubMed
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Pigmented villonodular synovitis (PSV) is rare in children and typically affects one joint. This case highlights a rare pediatric instance of PSV with polyarticular involvement, emphasizing diagnostic clues.

Area of Science:

  • Pediatric Rheumatology
  • Orthopedic Surgery
  • Medical Diagnostics

Background:

  • Pigmented villonodular synovitis (PSV) is an uncommon condition affecting the synovium.
  • Polyarticular involvement and pediatric cases of PSV are particularly rare.

Observation:

  • A 14-year-old boy presented with a nine-year history of painless swelling in his wrists, knees, and ankles.
  • Clinical presentation included painless polyarticular swelling with minimal inflammatory signs.
  • Initial laboratory tests for acute-phase reactants were negative, and synovial fluid analysis was normal.

Findings:

  • Plain film radiography revealed periarticular soft tissue swelling.
  • Synovial biopsy of both knees confirmed the presence of pigmented villonodular synovitis.

Related Experiment Videos

  • The case demonstrates a rare presentation of PSV with widespread joint involvement in a child.

    • Implications:

    • This case underscores the importance of considering PSV in pediatric patients with unexplained polyarticular swelling.
    • Diagnostic challenges in pediatric polyarthritis necessitate a high index of suspicion for rare conditions like PSV.
    • Synovial biopsy remains a critical diagnostic tool for confirming PSV, especially in atypical presentations.