Table 3

MRP-1 expression in renal cell carcinoma and association with age at diagnosis, tumour size, histological grade and nodal status (n = 95)

Number

Strong (+3)

Moderate (+2)

Weak (+1)

Cases expressing MRP-1

95

Percentage Staining

1+ (1< 25%)

7

0

2

5

2+ (≥ 25–50%)

30

2

16

12

3+ (≥ 50<75%)

38

13

23

2

4+ (≥ 75%)

20

13

6

1

Age

< 60

41

14

19

8

> 60

54

14

28

12

Gender

Male

49

15

25

9

Female

46

13

22

11

Tumour size

< 7 cm

56

14

29

13

> 7 cm

39

14

17

7

Tumour grade (7 unknown)

Grade 1

16

5

7

4

Grade 2

35

8

19

8

Grade 3

37

14

17

6

Nodal status (56 unknown)

Positive

31

8

17

6

Negative

8

2

3

3

Walsh et al. BMC Urology 2009 9:6   doi:10.1186/1471-2490-9-6