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Updated: Jun 18, 2026
Vessel-sparing Excision and Primary Anastomosis
Published on: January 7, 2019
Medium-size-vessel vasculitis
Michael J Dillon1, Despina Eleftheriou, Paul A Brogan
1Nephrourology Unit, UCL Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK. m.dillon@ich.ucl.ac.uk
Insights
Childhood medium-size artery vasculitides like polyarteritis nodosa (PAN) and Kawasaki disease can cause serious illness. New PAN criteria and therapies, including IV-Ig for Kawasaki disease, offer improved treatment and prognosis.
Area of Science:
- Pediatric Rheumatology
- Immunology
- Cardiology
Background:
- Medium-size artery vasculitides are significant causes of childhood morbidity.
- Key conditions include polyarteritis nodosa (PAN), cutaneous PAN, and Kawasaki disease.
- PAN presents serious risks, while Kawasaki disease is a leading cause of acquired heart disease in children.
Purpose of the Study:
- To review current understanding of childhood medium-size artery vasculitides.
- To highlight diagnostic advancements and therapeutic options.
- To discuss the pathogenetic mechanisms and long-term outcomes.
Main Methods:
- Review of literature on pediatric vasculitides.
- Discussion of validated classification criteria for PAN.
- Analysis of current and emerging treatment strategies.
Main Results:
- New PAN classification criteria enhance epidemiological and clinical trial utility.
- Renal involvement is frequent in PAN and Kawasaki disease, with potential for renal failure.
- Intravenous immunoglobulin (IV-Ig) and aspirin are primary treatments for Kawasaki disease, with steroids or infliximab for resistant cases.
Conclusions:
- Improved understanding of pathogenesis and long-term follow-up are crucial for better therapy and prognosis.
- Advances in diagnostics and therapeutics offer hope for managing these serious childhood conditions.
- Further research into pathogenetic mechanisms will refine treatment strategies for pediatric vasculitides.
Abstract:
Medium-size-artery vasculitides do occur in childhood and manifest, in the main, as polyarteritis nodosa (PAN), cutaneous PAN and Kawasaki disease. Of these, PAN is the most serious, with high morbidity and not inconsequential mortality rates. New classification criteria for PAN have been validated that will have value in epidemiological studies and clinical trials. Renal involvement is common and recent therapeutic advances may result in improved treatment options. Cutaneous PAN is a milder disease characterised by periodic exacerbations and often associated with streptococcal infection. There is controversy as to whether this is a separate entity or part of the systemic PAN spectrum. Kawasaki disease is an acute self-limiting systemic vasculitis, the second commonest vasculitis in childhood and the commonest cause of childhood-acquired heart disease. Renal manifestations occur and include tubulointerstitial nephritis and renal failure. An infectious trigger and a genetic predisposition seem likely. Intravenous immunoglobulin (IV-Ig) and aspirin are effective therapeutically, but in resistant cases, either steroid or infliximab have a role. Greater understanding of the pathogenetic mechanisms involved in these three types of vasculitis and better long-term follow-up data will lead to improved therapy and prediction of prognosis.
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