Table 1 The International Study of Kidney Disease in Children (ISKDC) classification of Henoch-Schönlein purpura nephritis (a modification according to ref. [16])
ISKDC grade | Description |
|---|---|
Grade I | Minimal alterations |
Grade II | Mesangial proliferation |
Grade III | Proliferation or sclerosis with < 50% crescents ((a) focal or (b) diffuse) |
Grade IV | Mesangial proliferation or sclerosis with 50–75%, crescents ((a) focal or (b) diffuse) |
Grade V | Mesangial proliferation or sclerosis with > 75% crescents ((a) focal or (b) diffuse) |
Grade VI | Membranoproliferative like glomerulonephritis |