MRI-guided muscle biopsy improves diagnostic yield in small- to medium-vessel vasculitis: a retrospective single-center study.
To evaluate the utility of magnetic resonance imaging (MRI)-guided muscle biopsy (MB) in diagnosing small- to medium-vessel vasculitis. We retrospectively included patients with antineutrophil cytoplasmic antibody-associated vasculitis (AAV) or polyarteritis nodosa (PAN) between…