Skip to main content

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

  PAN GPA EGPA MPA
Patients who underwent biopsy (N) 22 21 11 8
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)
Kidney 3/8 (37.5) 6/8 (75.0)
Lung 0/6 (0.0) 1/2 (50.0)
Skin 13/16 (81.3) 1/2 (50.0) 3/8 (37.5)
Peripheral nerve 1/1 (100) 1/3 (33.3) 2/2 (100) 2/2 (100)
Intestine 1/1 (100)
Other 2/7 (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