Fig. 2From: A case report of IgG4-related disease: an insidious path to the diagnosis through kidney, heart and brainDiffuse tubulointerstitial fibrosis with two normal glomeruli (a); lymphoplasmatic infiltrate with parenchymal atrophy (b); a lymphoid follicle with a reactive germinal centre surrounded by mature plasma cells (yellow arrows) (c); fibrotic infiltration, Giemsa 40XIgG, IgG4-positive plasma cells (yellow arrows) (d)Back to article page