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Table 3 Microscopy findings

From: Clinicopathologic features of infection-related glomerulonephritis with IgA deposits: a French Nationwide study

Variablesn = 27
Histologic features
No. of glomeruli (mean ± SD (range))15 ± 9 (3–46)
Globally sclerotic glomeruli (mean ± SD (range))2 ± 2 (0–8)
Mesangial hypercellularity (n (%))24 (88.9)
Endocapillary proliferation (n (%))24 (88.9)
  Segmental (n (%))/Global (n (%))9 (33.3)/15 (55.6)
  Focal (n (%))/Diffuse (n (%))10 (37.0)/14 (51.9)
Exudative endocapillary proliferation (n (%))22 (81.4)
   < 5 neutrophils per glomerulus (n (%))/≥5 neutrophils per glomerulus (n (%))15 (55.5)/7 (25.9)
Membranoproliferative pattern (n (%))9 (33.3)
Crescentic proliferation (n (%))10 (37.0)
Cellular (n(%))/Fibrocellular (n(%))/Fibrous (n(%))7 (25.9%)/5 (18.5%)/0
Fibrinoid necrosis (n (%))3 (11.1)
Deposits (n (%))16 (59.2)
  Subepithelial humps (n (%))/Intramembranous (n (%))13 (48.1)/3 (11.1)
Interstitial fibrosis and tubular atrophy (n (%))23 (85.1)
  Mild (n (%))/Moderate (n (%))/Severe (n (%))12 (44.4)/5 (18.5)/6 (22.2)
Interstitial inflammation (n (%))21 (77.8)
  Mild (n (%))/Moderate (n (%))/Severe (n (%))16 (59.3)/5 (18.5)/0
Acute tubular injury (n (%))23 (85.1)
  Mild (n (%))/Moderate (n (%))/Severe (n (%))8 (29.6)/8 (29.6)/7 (25.9)
Red blood cells casts (n (%))18 (66.7)
Arteriosclerosis (n (%))24 (88.9)
  Mild (n (%))/Moderate (n (%))/Severe (n (%))4 (14.8)/16 (59.3)/4 (14.8)
Histologic pattern
Acute (n (%))7 (25.9)
Subacute (n (%))17 (63.0)
Resolving (n (%))3 (11.1)
  1. Abbreviations: SD standard deviation