Table 1.

Clinical characteristic of patients.

Characteristic	Mean ± SD
Age (years)	44.52 ± 9.65
Pathological tumor size (cm)	4.32 ± 2.79
No. of node analyze	11.48 ± 6.39
No. of positive nodes	4.47 ± 4.29
	No. (%)
Side involved
Right	26 (44.8)
Left	32 (55.2)
Histology
Ductal	52 (89.7)
Lobular	4 (6.9)
Others	2 (3.4)
Hormone receptors
ER
Positive	37 (63.8)
Negative	21 (36.2)
PR
Positive	38 (65.5)
Negative	20 (34.5)
HER-2
Positive	23 (39.7)
Negative	35 (60.3)
Hormone therapy
Positive	45 (77.6)
Negative	13 (22.4)
Regimen of hormone therapy
Tamoxifen	40 (88.9)
Others	5 (11.1)