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Table 1 Fuhrman grades of clear cell renal cell carcinoma (ccRCC) in each morphology

From: Tumor grade of clear cell renal cell carcinoma assessed by contrast-enhanced computed tomography

 

Fuhrman grade

Total

1

2

3

4

 

Cystic*

3 (13.6%)

16 (72.7%)

3 (13.6%)

0 (0%)

22

Well-circumscribed

6 (5.0%)

72 (60.5%)

38 (31.9%)

3 (2.5%)

119

Lobulated†

0 (0%)

14 (46.7%)

12 (40.0%)

4 (13.3%)

30

Infiltrative‡

0 (0%)

5 (11.6%)

19 (44.2%)

19 (44.2%)

43

  1. Note. *Cystic ccRCC has significantly lower grades than well-circumscribed ccRCC (P =0.025). †Lobulated ccRCC is higher grade than well-circumscribed ccRCC (P =0.018). ‡Infiltrative ccRCC is higher grade than lobulated ccRCC (P =0.00029).