Clinical relevance of ErbB-2/HER2 nuclear expression in breast cancer

BMC Cancer

Table 1 Patient clinicopathological characteristics

Characteristic	N° patients	%
Total number of patients	273
Age (years)
Mean	55.5
SD	13.7
Menopausal status
Premenopausal	111	41
Postmenopausal	162	56
Tumor size
T1	58	21
T2	148	54
T3	45	17
T4	22	8
Lymph node status
N0	118	43
N1	83	30
N2	72	27
Distant metastasis
M0	256	94
M1	17	6
Metastatic sites location
Bone	7
Liver	3
Skin	2
Brain	2
Not documented	3
Clinical stage
I	39	14
II	137	50
III	81	30
IV	16	6
Tumor grade
1	45	17
2	134	50
3	86	33
Not documented	8
Hormone receptor status, crossed results
ER+PR+^a	140	52
ER+PR-	50	18
ER-PR+	4	2
ER-PR-	75	28
Not documented	4

ISSN: 1471-2407