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Granulomatosis with polyangiitis presenting as Henoch-Schönlein purpura in children

Tuan Bui1, Shanmuganathan Chandrakasan, Janet Poulik

  • 1Pediatric Residency Program, Wayne State University School of Medicine, Children's Hospital of Michigan, Detroit, MI, USA.

Journal of Clinical Rheumatology : Practical Reports on Rheumatic & Musculoskeletal Diseases
|May 15, 2013
PubMed

Insights

Granulomatosis with polyangiitis (GPA) can mimic Henoch-Schönlein purpura (HSP) in children. Early recognition of atypical GPA presentations is crucial to prevent delayed diagnosis and management of this serious vasculitis.

Area of Science:

  • Pediatric Rheumatology
  • Systemic Vasculitis

Background:

  • Granulomatosis with polyangiitis (GPA), a rare, severe systemic vasculitis, can present with symptoms overlapping Henoch-Schönlein purpura (HSP).
  • HSP is a common, generally benign childhood vasculitis, making differential diagnosis challenging.

Observation:

  • Two pediatric patients initially presented with clinical features fulfilling classification criteria for HSP.
  • Presentations included non-thrombocytopenic purpura, abdominal pain, and microscopic hematuria.

Findings:

  • Both patients were eventually diagnosed with GPA, demonstrating significant renal and pulmonary involvement.
  • Antineutrophil cytoplasmic antibody tests and tissue biopsy are key diagnostic tools for GPA.

Implications:

  • This case series highlights the importance of considering GPA in children with apparent HSP, especially with atypical or severe features.
  • Raising awareness of these atypical presentations can lead to earlier diagnosis and management of GPA, improving patient outcomes.

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