Table 2 DCE-MRI features of TNBC compared to other subtypes of breast cancer (non-TNBC)

FGT

0.104

12

0

 B/scattered FGT

56

44

 C/heterogenous FGT

32

48

 D/extreme FGT

0

8

BPE

0.264

 Minimal

40

56

 Mild

36

36

 Moderate

24

8

Type of lesion enhanced

0.866

 Focus

9.3

12.5

 Mass

60.5

56.3

 NME

30.2

31.3

Mass associated with NME

0.185

 Associated

32

16

 Non-associated

68

84

Mass/shape

0.008

 Oval

7.7

7.4

 Round

30.8

3.7

 Irregular

61.5

88.9

Mass/margin

 Circumscribed

30.8

11.1

 Non-circumscribed (irregular or spiculated)

69.2

88.9

0.078

Mass/internal enhancement

0.001

 Homogenous

23.1

70.4

 Heterogenous

30.8

22.2

 Rim enhancement

46.2

7.4

NME/distribution

0.833

 Focal

30.8

40

 Linear

23.1

13.3

 Segmental

15.4

26.7

 Regional

15.4

13.3

 Diffuse

15.4

6.7

NME/internal enhancement

0.450

 Homogenous

46.2

26.7

 Heterogenous

30.8

53.3

 Clumped

23.1

20

T2 signal intensity

< 0.001

 High

62.8

16.7

 Low

34.9

79.2

 Indistinct

2.3

4.2

T2 STIR signal intensity

< 0.001

 High

86.0

35.4

 Low

11.6

60.4

 Indistinct

2.3

4.2

Axillary lymph nodes

0.563

 Non-specific/not pathological

28.0

32

 Pathological

72.0

68

K. curve

0.673

 Type I: persistent

16.7

16.2

 Type II: plateau

38.9

29.7

 Type III: washout

44.4

54.1