Table 1: Histopathological findings classification.

CategoryPathogenic typeSpecific disease entityScores or class

Glomerulonephritis (GN)Immune-complex GNLN, IgA Nephropathy, MPGN Immunoglobulin positive, Post infectious acute GNOxford/MEST score for IgA Nephropathy, ISN/RPS score for NL
Complement Mediated GNaHUS, C3GN, DDD
Pauci-immune GNMPO-ANCA GN
Podocytopathy Primary NSMCD, FSGS, MNNot-otherwise-specified, cellular, collapsing disease, tip and perihilar variants for FSGS
Basement membrane disease (BMD)Inherited Diseases of the Glomerular Basement MembraneTMB, AS
Tubulointerstitial disease Acute TIN 
Chronic TIN
OthersNonspecific findings 
Normal 
End stage kidney disease

LN: Lupus Nephritis; MPGN: Membranoproliferative Glomerulonephritis; aHUS: Atypical Hemolytic Uremic Syndrome; C3GN: C3 Glomerulonephritis; DDD: Dense Deposit Disease; MPO: Myeloperoxidase; ANCA: Anti-neutrophil Cytoplasmic Antibodies; NS: Nephrotic Syndrome; MCD: Minimal Change Disease; FSGS: Focal Segmental Glomerulosclerosis; MN: Membranous Nephropathy; TMB: Thin Membrane Disease; AS: Alport’s Syndrome; TIN: Tubulointerstitial Nephritis; MEST: mesangial hypercellularity (M), segmental sclerosis (S), interstitial fibrosis/tubular atrophy (T) lesions; ISN/RPS: International Society of Nephrology/ Renal Pathology Society