Clinical data

NAC invasion

Test

p-value

(Sig.)

Absent

(N = 50)

Present

(N = 11)

Patient’s complaint

Painless lump

Absent

18

36%

7

63.6%

2.847^‡

0.174

(NS)

Present

32

64%

4

36.4%

Painful lump

Absent

36

72%

9

81.8%

0.449^‡

0.711

(NS)

Present

14

28%

2

18.2%

Axillary lump

Absent

48

96%

11

100%

0.455^‡

0.500

(NS)

Present

2

4%

0

0%

Nipple discharge

Absent

49

98%

11

100%

0.224^‡

1.000

(NS)

Present

1

2%

0

0%

Bleeding per nipple

Absent

50

100%

10

90.9%

4.621^‡

0.180

(NS)

Present

0

0%

1

9.1%

Nipple retraction

Absent

49

98%

7

63.6%

14.149

0.003

(S)

Present

1

2%

4

36.7%

Affected breast

Right breast

27

54%

5

50%

5.092^‡

0.078

(NS)

Left breast

23

46%

4

40%

Both breasts

0

0%

1

10%

Breast size (bra size)

Mean ± SD

42.48 ± 2.47

43.63 ± 2.65

−1.321•

0.186

(NS)

Median (Range)

42 (38 - 46)

44 (40 - 46)

Bilaterality

No

50

100%

9

90%

5.085^‡

0.167

(NS)

Yes

0

0%

1

10%

Focality

Unifocal

50

100%

2

18.2%

47.990^‡

<0.001

(HS)

Multifocal

0

0%

9

81.8%

Tumor site

All masses

(N = 70)

Non palpable

2

2.9%

Upper outer 1/4

42

60%

Upper inner 1/4

7

10%

Lower outer 1/4

6

8.6%

Lower inner 1/4

5

7.1%

Central

6

8.6%

Axillary tail

2

2.9%