Table 1 Renal cell carcinoma: type, stage and incidence of retrograde venous invasion

From: Retrograde venous invasion in renal cell carcinoma: a complication of sinus vein and main renal vein invasion

Type

#Cases

#pT1

#pT2

#pT3

#Retrograde

(%) Retrograde

Clear cell

72

33

6

33

7

10%

Papillary

24

18

1

5

0

0%

Chromophobe

5

2

3

0

0

0%

Unclassified

6

3

1

2

2

33%

Other

8

6

1

1

0

0%

Total

115

62

12

41

9

8%

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