Table 5 Correlation of histologic features of tumor and tumor stage

From: Impact of the 1998 World Health Organization/International Society of Urological Pathology classification system for urothelial neoplasms of the kidney

Tumor characteristics

Noninvasive vs invasive disease P-value

≤pT1 disease vs ≥pT2 disease P-value

Grade of papillary carcinoma (WHO/ISUP)

0.001

0.001

Grade of papillary carcinoma (WHO)

0.001

0.001

Necrosis

0.001

0.001

Inflammation

0.008

0.019

Aberrant differentiation

0.205

0.040

  1. WHO, World Health Organization;27 WHO/ISUP, World Health Organization/International Society of Urological Pathology.32
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