Table 1 Changes in ER, PR and Ki67 in paired core biopsy/resection specimens (n = 42 women)

Number of patients

Change from <4 to ≥4

Change from ≥4 to < 4

Rise of fall in score, but not crossing threshold 4

No change between samples

ER premenopausal

15

0

3

4

8

ER postmenopausal

26

0

1

14

11

PR premenopausal^a

15

1

4

4

6

PR postmenopausal^a

16

1

3

6

6

Change from <20 % to ≥20 %

Change from ≥20 % to <20 %

Rise or fall in Ki67, but not crossing 20 %

No change between samples

Ki67 premenopausal

15

2

1

8 rise

4

Ki67 postmenopausal^b

25

1

4

3 rise + 11 fall

6