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Nephrotic Syndrome II : Assessment and Medical Management

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Systemic vasculitis: a dual diagnosis?

Eliza Gil1, Pamela Lutalo, David D'Cruz

  • 1Care of the elderly, University College Hospital, London, UK. eliza.gil2@googlemail.com

BMJ Case Reports
|June 7, 2012
PubMed
Summary
This summary is machine-generated.

A rare case of systemic vasculitis presented with features of both granulomatosis with polyangiitis and polyarteritis nodosa. The patient

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Area of Science:

  • Rheumatology
  • Nephrology
  • Immunology

Background:

  • Systemic vasculitis encompasses a group of rare diseases characterized by inflammation of blood vessels.
  • Granulomatosis with polyangiitis (Wegener's) and polyarteritis nodosa are distinct forms of systemic vasculitis with different clinical and pathological features.
  • Overlap in diagnostic criteria can occur, presenting diagnostic challenges.

Observation:

  • A 25-year-old male presented with symptoms fulfilling criteria for both granulomatosis with polyangiitis and polyarteritis nodosa.
  • Diagnostic workup revealed necrotizing granulomas, positive cytoplasmic antineutrophil cytoplasmic antibodies (c-ANCA), and elevated antiproteinase 3 (PR3) antibodies, confirming granulomatosis with polyangiitis.
  • The patient subsequently developed testicular infarction and arterial aneurysms (hepatic and renal), features more characteristic of polyarteritis nodosa.

Findings:

  • The patient exhibited focal crescentic glomerulonephritis and mononeuritis multiplex, consistent with granulomatosis with polyangiitis.
  • The development of testicular infarction and multiple arterial aneurysms suggested concurrent polyarteritis nodosa.
  • Symptoms emerged six weeks post-hepatitis B vaccination, raising suspicion for a potential etiological role.

Implications:

  • This case highlights the diagnostic complexity of overlapping systemic vasculitis syndromes.
  • It underscores the importance of considering atypical presentations and potential triggers, such as vaccination, in vasculitis.
  • Further research into the immunomodulatory effects of vaccines on vasculitis pathogenesis may be warranted.