Table 2 Association of primary therapy with clinicopathological factors
From: Vasculogenic mimicry is associated with trastuzumab resistance of HER2-positive breast cancer
|  | Primary surgery N = 25 (cases) | NAC*1 without Tzm N = 14 (cases) | NAC with Tzm N = 24 (cases) | P *2 |
|---|---|---|---|---|
Menopausal status | Â | Â | Â | 0.002 |
 Premenopausal | 6 | 4 | 17 |  |
 Postmenopausal | 19 | 10 | 7 |  |
Tumor size | Â | Â | Â | 0.034 |
 T1 and T2 | 24 | 9 | 20 |  |
 T3 and T4 | 1 | 5 | 4 |  |
Lymph node metastasis | Â | Â | Â | 0.011 |
 Negative | 17 | 3 | 9 |  |
 Positive | 8 | 11 | 15 |  |
Estrogen receptor | Â | Â | Â | 0.446 |
 Negative | 8 | 4 | 4 |  |
 Positive | 17 | 10 | 20 |  |
Progesterone receptor | Â | Â | Â | 0.345 |
 Negative | 14 | 8 | 9 |  |
 Positive | 11 | 6 | 15 |  |
Histological grade | Â | Â | Â | 0.183 |
 1 and 2 | 12 | 10 | 17 |  |
 3 | 13 | 4 | 7 |  |
Histological type | Â | Â | Â | 0.510 |
 Invasive ductal carcinoma | 22 | 12 | 23 |  |
 Others | 3 | 2 | 1 |  |