Table 1.

Clinical characteristics of patients with breast cancer

Clinical characteristic	Number of patients	Percentage of tested patients (%)
Age
pre-menopausal	31	30.1
post-menopausal	72	69.9
Stage of clinical disease advancement according to TNM
I	47	45.6
II	38	36.9
III	18	17.5
Status of local axillary lymph nodes
pN0	51	49.5
pN1	52	50.5
Size of the primary tumour
pT < 20 mm	54	52.4
pT ≥ 20 ≤ 50 mm	40	38.9
pT ≥ 50 mm	9	8.7
Histological grade of malignancy
G1	11	10.7
G2	50	48.5
G3	42	40.8