Stool guaiac examination was negative. Routine hematoxylin-eosin staining of the skin biopsy specimen revealed a necrotizing leukocytoclastic vasculitis with neutrophils (Figure 3). Direct ...

Objective To develop and validate a paediatric vasculitis activity assessment tool based on modification of the Birmingham Vasculitis Activity Score (BVASv.3). Methods A paediatric vasculitis registry ...