Table 6 Patients with sentinel lymph node biopsy (n = 360)

Age (years)

≤50

58

13

22.4

n.s.

>50

302

63

20.9

BMI

<25

146

31

21.2

n.s.

25-29.9

125

26

20.8

≥30

89

19

21.3

Tumour stage

pT1a/b

64

7

10.9

0.009

pT1c

182

32

17.6

pT2

111

37

33.3

Histological subtype

Ductal

259

57

22

n.s.

Lobular

31

8

25.8

Others

70

11

15.7

Grading

G1

63

5

7.9

0.014

G2

211

48

22.7

G3

86

23

26.7

Lymphangiosis

No

250

21

8.4

<0.001

Yes

110

55

50

Growth pattern

Unifocal

335

65

19.4

0.021

Multicentric

22

9

40.9

ER status

Positive

301

64

21.3

n.s.

Negative

59

12

20.3

PR status

Positive

270

57

21.1

n.s.

Negative

90

19

21.1

HER2 status

Negative

336

73

21.7

n.s

Positive

24

3

12.5

Ki-67

≤14%

142

24

16.9

0.067

>14%

194

47

24.2

Total

360

76

21.1