Table 1. Clinical and pathological features of tumors and patients (n = 40).

Patient characteristics		%
Age, years
	<50	29.6
	≥50	70.4
Surgical treatment
	Mastectomy	32.1
	Tumorectomy	67.9
Lymph node status
	Negative	74.5
	Positive	25.5
Tumor
	T1	57.1
	T2< 3cm	42.9
Histology
	Ductal	84.7
	Lobular	11.5
	Others	3.8
Grade
	I	30.8
	II	38.4
	III	30.8