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International Society of Pediatric Oncology postoperative histological classification of Wilms' tumor (WT)24
| Postoperative histological classification of WT | ||
| Low | Intermediate | High |
| Mesoblastic nephroma Cystic partially differentiated Nephroblastoma Completely necrotic WT |
WT of epithelial, stromal, mixed or regressive types Focal anaplastic WT |
Blastemal-type WT Diffuse anaplastic WT Clear cell sarcoma of the kidney Rhabdoid tumor of the kidney |
