Table 3. Comparison of association between immunohistochemical expression of vimentin and α-SMA in benign breast and paired cases of primary invasive breast cancer or metastasis to axillary lymph node.

	Vimentin-positive fibroblast
α-SMA-positive fibroblast	Negative	Heterogeneous	Homogeneous	Association of expression (%)a
Benign breast				0
Negative	0	0	11
Heterogeneous	0	0	0
Homogeneous	0	0	0
Primary breast cancer				95
Negative	0	0	2
Heterogeneous	0	0	6
Homogeneous	0	0	31
Breast cancer metastasis to LN				92
Negative	0	1	2
Heterogeneous	0	0	1
Homogeneous	0	0	35

Abbreviation: α-SMA=α-smooth muscle actin.

^aAssociation between the expression of vimentin and α-SMA in benign breast and paired cases of primary invasive breast cancer or metastasis to lymph nod.