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| 1998 WHO/ISUP | |||||
| Low grade/high grade | Papilloma | PNLMP | LCPUC | HGPUC | N (%) |
| Papilloma | 2 | 0 | 0 | 0 | 2 (1%) |
| Low grade | 16 | 112 | 109 | 8 | 245 (76%) |
| High grade | 0 | 4 | 32 | 37 | 73 (22%) |
| N (%) | 18 (5%) | 116 (36%) | 141 (44%) | 45 (14%) | 320 (100%) |
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.
