Table III.
Comparison of the renal biopsy of both groups.
| PTU associated small-vessel vasculitis (n=10) | Primary AAV (n=18) | Statistical data | P-value | |
|---|---|---|---|---|
| Proportion of cellular crescents (%) | 11.9±5.8 | 45.3±9.9 | t=−9.7 | 0.00 |
| Proportion of fibrocellular crescents (%) | 2.5±1.8 | 20.1±7.0 | t=−7.8 | 0.00 |
| Proportion of fibrous crescents (%) | 3.9±2.2 | 16.3±3.9 | t=−9.3 | 0.00 |
| Glomerular capillary loop necrosis | 2 (20.0%) | 12 (66.7%) | − | 0.04 |
| Interstitial fibrosis | 1 (10.0%) | 10 (55.6%) | − | 0.04 |
| Arteriolar fibrinoid necrosis | 1 (10.0%) | 11 (61.1%) | − | 0.04 |
| Inflammatory cell infiltration | 1 (20.0%) | 13 (72.2%) | − | 0.00 |
PTU, propylthiouracil; AAV, ANCA-associated small-vessel vasculitis; ANCA, anti-neutrophil cytoplasmic antibody.