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. 2021 Sep 10;61(5):1966–1974. doi: 10.1093/rheumatology/keab695

Table 2.

Histopathological findings on biopsy

Biopsy findings Initial biopsy Interval biopsy
(n = 59) (n = 59)
Total glomeruli (n) 19 (13–27) 19 (13–24)
Glomeruli (%)
 Normal 26 (17–48) 39 (21–60)*
 Necrotizing lesions 25 (12–52) 0 (0–0)*
 Cellular crescents 16 (0–33) 0 (0–0)*
 Fibrocellular crescents 0 (0–14) 0 (0–0)*
 Globally sclerosed 7 (0–18) 22 (9–40)*
Interstitial inflammation
 Nil 0 (0%) 11 (19%)*
 Mild 43 (73%) 40 (68%)
 Moderate 8 (14%) 7 (12%)
 Severe 8 (14%) 1 (2%)*
IFTA
 Mild 32 (54%) 21 (36%)*
 Moderate 17 (29%) 19 (32%)
 Severe 10 (17%) 19 (32%)

Data are presented as median (interquartile range) or number of patients (%). Total glomeruli data are presented as number of glomeruli in sample. All other glomeruli data are presented as percentage of normal glomeruli. Analysis by Wilcoxon matched-pairs signed rank test or χ2 test as appropriate, *P <0.05. IFTA: interstitial fibrosis and tubular atrophy.