LUPUS NEPHRITIS

BOX 2

• I. 
  Normal
• II. 
  Mesangial disease
• III. 
  Focal proliferative: less than 50% glomeruli
• IV. 
  Diffuse proliferative: greater than 50% glomeruli
• V. 
  Membranous-subepithelial immune deposits
• VI. 
  Sclerosing

Lupus nephritis: World Health Organization classification