Article Text
Statistics from Altmetric.com
The classification of the antineutrophil cytoplasmic antibody (ANCA) associated vasculitides (granulomatosis with polyangiitis (Wegener's) (GPA), eosinophilic granulomatosis with polyangiitis (Churg Strauss) (EGPA), and microscopic polyangiitis (MPA)) and polyarteritis nodosa (PAN) remains contentious.1 The American College of Rheumatology (ACR) 1990 classification criteria do not include MPA or use ANCA, while the Chapel Hill Consensus Conference (CHCC) definitions (1994) did not include ANCA and although not intended to be used in classification, are widely used for that purpose.2 In order to harmonise the use of the two systems for epidemiological studies, a consensus algorithm for the classification of ANCA vasculitis and PAN was …
Footnotes
-
Contributors RAW and DGIS conceived the study. RA performed the data collection and analysis. RAW, DGIS, RA and SEL all contributed to drafting the manuscript.
-
Competing interests None.
-
Ethics approval Norwich Local Research Ethics Committee approved this study.
-
Provenance and peer review Not commissioned; externally peer reviewed.