| 1998 WHO/ISUP | |||||
|---|---|---|---|---|---|
| Modified WHO 1973 | Papilloma | PNLMP | LCPUC | HGPUC | N (%) |
| HGPUC, high grade papillary urothelial carcinoma; ISUP, International Society of Urologic Pathology; LGPUC, low grade papillary urothelial carcinoma; PNLMP, papillary neoplasms of low malignant potential; WHO, World Health Organisation. | |||||
| Papilloma | 2 | 0 | 0 | 0 | 2 (1%) |
| 1 | 8 | 18 | 5 | 0 | 31 (9%) |
| 2a | 8 | 94 | 104 | 8 | 214 (66%) |
| 2b | 0 | 4 | 32 | 36 | 72 (22%) |
| 3 | 0 | 0 | 0 | 1 | 1 (1%) |
| N (%) | 18 (5%) | 116 (36%) | 141 (44%) | 45 (14%) | 320 (100%) |