Characterization and Etiopathogenic Approach of Pediatric Renal Biopsy Patients in a Colombian Medical Center from 2007-2017

Table 1

Histopathological findings classification.

Category	Pathogenic type	Specific disease entity	Scores or class
Glomerulonephritis (GN)	Immune-complex GN	LN, IgA Nephropathy, MPGN Immunoglobulin positive, Post infectious acute GN	Oxford/MEST score for IgA Nephropathy, ISN/RPS score for NL
	Complement Mediated GN	aHUS, C3GN, DDD
	Pauci-immune GN	MPO-ANCA GN
Podocytopathy	Primary NS	MCD, FSGS, MN	Not-otherwise-specified, cellular, collapsing disease, tip and perihilar variants for FSGS
Basement membrane disease (BMD)	Inherited Diseases of the Glomerular Basement Membrane	TMB, AS
Tubulointerstitial disease	Acute TIN; Chronic TIN
Others	Nonspecific 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