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Table 2 Baseline characteristics

From: MRI-based response patterns during neoadjuvant chemotherapy can predict pathological (complete) response in patients with breast cancer

Characteristic

Number

 

Percentage

Age, years

 Mean (n = 76)

 

53

 

 Range

 

29–72

 

T-stage prior to NAC

 T1

13

 

16

 T2

46

 

58

 T3

15

 

19

 T4

5

 

6

 Tx

1

 

1

N-stage prior to NAC

 N0

49

 

61

 N1

22

 

28

 N2

3

 

4

 N3

6

 

8

Histology

 Invasive carcinoma NST

71

 

89

 Lobular carcinoma

9

 

11

DCIS

 Present

21

 

26

 Absent

45

 

56

 Unknown

14

 

18

Subtype by receptor status

 ER/PR+ HER2+

13

 

16

 ER/PR+ HER2-

48

 

60

 ER- PR-HER2+

6

 

8

 ER-PR-HER2-

13

 

16

Grade

 1

2

 

3

 2

35

 

44

 3

25

 

31

 Unknown

18

 

23

Surgical method

 Mastectomy

46

 

58

 Lumpectomy

34

 

43

  1. Abbreviations: T-stage tumor stage, NAC neoadjuvant chemotherapy and immunotherapy, N-stage nodal stage, NST no special type, DCIS ductal carcinoma in situ, ER estrogen receptor, PR progesterone receptor, HER2 human epidermal growth factor receptor 2