label: Fibrillary glomerular subepithelial deposits
label_lc: fibrillary glomerular subepithelial deposits
description: "A type of fibrillar glomerular subepithelial deposit characterized by extracellular aggregates of randomly arranged, straight, non-branching fibrils that are thicker than amyloid fibrils (average diameter about 20 nm) and are often admixed with smudgy, electron-dense material. This feature is associated with a prominent glomerular basement membrane (GBM) reflecting an diffuse and relatively uniform increase in thickness (subjective estimate)."