De Novo and Relapsing Glomerulonephritis following SARS-CoV-2 mRNA Vaccination in Microscopic Polyangiitis

Figure 1

(a) Masson trichrome stain 400x; kidney core biopsy of patient 1 with glomerular capillary necrosis and acute extravasation of fibrin into Bowman’s space with a fibrocellular crescent (arrows). (b) PAS stain of a glomerulus with rupture of Bowman’s capsule and segmental tuft sclerosis. Adjacent segmental vessel wall necrosis of an interstitial arteriole (arrows) depicting highly acute microangiopathic vasculitis is shown.

(a)

(b)