Fig. 1
From: Biopsy-proven kidney involvement in hypocomplementemic urticarial vasculitis
Representative kidney pathological lesions observed in patients with Hypocomplementemic Urticarial Vasculitis from the present cohort. A Vasculitis with fibrinoid necrosis involving a pre-glomerular arteriole. Masson’s trichrome, × 200. B Global endocapillary proliferation with an interstitium containing a slight peri-venular inflammatory infiltrate. Masson’s trichrome, × 200. C Interstitial nephritis with mononuclear cells, oedema, and suffering tubules. Masson’s trichrome, × 200. D Abundant deposits of C1q within arteriole wall, capsule, and tubular basement membrane. Immunofluorescence, × 200