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Pauci-immune crescentic glomerulonephritis.

R K Gupta1

  • 1Department of Pathology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Rai Bareli Road, Lucknow-226 014, Uttar Pradesh. rkgupta@sgpgi.ac.in

Indian Journal of Pathology & Microbiology
|March 18, 2004
PubMed
Summary

Pauci-immune crescentic glomerulonephritis (PICGN) is a severe kidney disease often linked to ANCA-associated vasculitis. Early treatment improves remission rates, but relapses are common, highlighting the need for ongoing management.

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Area of Science:

  • Nephrology
  • Immunology
  • Rheumatology

Background:

  • Pauci-immune crescentic glomerulonephritis (PICGN) is a rapidly progressive kidney disease.
  • It often presents as part of systemic necrotizing small vessel vasculitis, including Wegener's granulomatosis (WG), microscopic polyangiitis (MPA), and Churg-Strauss syndrome (CSS).
  • These conditions are frequently associated with anti-neutrophilic cytoplasmic antibodies (ANCA), leading to the term ANCA-associated vasculitis.

Purpose of the Study:

  • To review the clinical presentation, diagnosis, and management of PICGN.
  • To emphasize the link between PICGN and ANCA-associated vasculitis.
  • To discuss treatment outcomes and prognosis.

Main Methods:

  • Review of literature on pauci-immune crescentic glomerulonephritis and ANCA-associated vasculitis.

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  • Analysis of disease associations, diagnostic markers (ANCA), and treatment strategies.
  • Evaluation of treatment efficacy, relapse rates, and long-term prognosis.

    • Main Results:

    • PICGN leads to rapid renal failure and is life-threatening.
    • WG, MPA, and CSS are common causes, with high prevalence of ANCA positivity (80-90% in WG/MPA).
    • While corticosteroids and cyclophosphamide achieve remission in 70-75% of patients, relapse occurs in over 25%.

    Conclusions:

    • PICGN is a serious manifestation of ANCA-associated vasculitis.
    • Active vasculitis necessitates avoiding renal transplant.
    • Despite effective treatments, relapses are frequent, underscoring the poor prognosis of untreated disease and the need for vigilant follow-up.