Evolution of human kidney allograft pathology diagnostics through 30 years of the Banff classification process

Table 2 Banff reporting standardization template according to the Banff 2019 meeting

Components of the allograft	Acute lesions	Scoring as 0, 1, 2, 3	Chronic lesions	Scoring as 0, 1, 2, 3	Acute & chronic lesions	Scoring as 0, 1, 2, 3
Glomeruli	g	-	cg	-
Interstitium	i	-	ci	-	ti, i-IFTA	-
Tubules	t	-	ct	-	t-IFTA	-
Vessels	v	-	cv	-
Peritubular capillaries	ptc	-	ptcml	-
C4d	C4d	-

C4d: Linear staining in peritubular capillaries or medullary vasa recta either by immunofluorescence on frozen sections of fresh frozen tissue or immunohistochemistry on formalin-fixed, paraffin-embedded tissue; cg: Chronic glomerulopathy (transplant glomerulopathy); ci: Interstitial fibrosis involving the cortex; ct: Tubular atrophy in the cortex; cv: Arterial intimal fibrosis (fibrointimal thickening); g: Glomerulitis; i: Inflammation in the non-scarred cortex; i-IFTA: Inflammation in the scarred cortex; ptc: Peritubular capillaritis; ptcml: Peritubular capillary basement membrane multilayering (requires EM for detection); t: Tubulitis in cortical tubules within the non-scarred cortex; ti: Total cortical inflammation, including scarred and non-scarred cortex; t-IFTA: Tubulitis in mildly to moderately atrophic tubules within the scarred cortex; v: Arteritis (intimal to transmural arteritis).