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Table 2 Pathological features and Banff score

From: Histopathological findings in transplanted kidneys

Feature Banff term Banff Score
0 1 2 3
Interstitial inflammation (% of nonfibrotic cortex) i <10% 10–25% 26–50% >50%
Total inflammation (% all cortex) ti <10% 10–25% 26–50% >50%
Tubulitis (maximum mononuclear cells/tubule) t 0 1–4 5–10 >10
Arterial inflammation (% lumen endarteritis) V None <25% >25% Transmural or necrosis
Glomerulitis (% glomeruli involved) g None <25% 26–50% >50%
Capillaritis (cells per cortical PTC, requires >10% of PTC to be affected for scoring) ptc <10% <5/PTC 5–10/PTC >10/PTC
C4d deposition in PTC (% positive) C4d 0% l–9% 10–50% >50%
Interstitial fibrosis (% of cortex) ci <5% 6–25% 26–50% >50%
Tubular atrophy (% cortex) ct 0% <25% 26–50% >50%
Arterial intimal thickening (% narrowing lumen of most severely affected glomerulus) cv 0% <25% 26–50% >50%
Transplant glomerulopathy (% of capillaries with duplication in most severely affected glomerulus) cg 0% <25% 26–50% >50%
Arteriolar hyalinosis (number with focal or circumferential hyaline) ah None 1 focal >1 focal 1 circumferential >50%
Mesangial matrix increase (% affected glomeruli) mm 0% <25% 26–50% >50%