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Table 3 Biopsies compatible with vasculitis performed in patients with the diagnosis of polyarteritis nodosa or ANCA-associated vasculitides per site of involvement

From: Reuma.pt/vasculitis – the Portuguese vasculitis registry

 PANGPAEGPAMPA
Patients who underwent biopsy (N)2221118
Positive biopsies per sitea(N/N total performed) (%)
Ear, nose and throat (ENT)2/12 (16.7)1/3 (33.3)1/3 (33.3)
Kidney3/8 (37.5)6/8 (75.0)
Lung0/6 (0.0)1/2 (50.0)
Skin13/16 (81.3)1/2 (50.0)3/8 (37.5)
Peripheral nerve1/1 (100)1/3 (33.3)2/2 (100)2/2 (100)
Intestine1/1 (100)
Other2/7 (28.6)0/1 (0.0)0/1 (0.0)
  1. a Compatible with vasculitis
  2. EGPA Eosinophilic granulomatosis with polyangiitis, GPA Granulomatosis with polyangiitis, MPA Microscopic polyangiitis, PAN Polyarteritis nodosa