Table 1 Patient characteristics

Number of patients

30

30

-

Age, years, mean

47.6

48.0

0.88

Height, m, mean

1.66

1.66

0.78

Weight, kg, mean

60.9

62.5

0.56

Body mass index, kg/m², mean

22.2

22.6

0.61

ASA score

1

10

15

0. 44

2

19

14

3

1

1

Associated diseases, n

15

14

1.0

Smoker, n

9

10

0.93

Diabetes mellitus, n

0

0

-

Fibromyalgia, n

0

0

-

Rheumatoid arthritis, n

0

0

-

Depression, n

3

1

0.61

Mastectomy side

Left n

7

15

0.10

Right n

15

10

Both n

8

5

Tumour diameter, cm, mean (range)

1.2 (0 to 5)

1.3 (0 to 6.5)

0.76

Histology (n = 60)

Invasive ductal carcinoma, n

22

17

0.56

Invasive lobular carcinoma, n

2

2

Ductal in situ, n

1

2

Without carcinoma, n

5

9

Grade (n = 58)

Grade 0, n

5

9

0.66

Grade I, n

2

1

Grade II, n

11

9

Grade III, n

11

10

Metastatic lymph nodes, median (range)

0 (0 to 21)

0 (0 to 18)

0.98

Resected lymph nodes, median (range)

2 (0 to 33)

3 (0 to 27)

0.97

Hormone receptor-positive n

18

20

0.79

HER-2-positive n

5

7

0.75