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Table 1 Scores for activity and chronicity (Austin system)

From: Searching for a prognostic index in lupus nephritis

Activity index (0–24)

 

 Endocapillary hypercellularity

(0–3)

 Leukocytic infiltration

(0–3)

 Subendothelial hyaline deposits

(0–3)

 Fibrinoid necrosis/caryorrhexis

(0–3) × 2

 Epithelial crescents

(0–3) × 2

 Interstitial inflammation

(0–3)

Chronicity index (0–12)

 

 Glomerular sclerosis

(0–3)

 Fibrous crescents

(0–3)

 Tubular atrophy

(0–3)

 Interstitial fibrosis

(0–3)