MRI | HER2/neu-positive N =13 | HER2/neu negative N = 47 | Test | P value | ||
---|---|---|---|---|---|---|
 | No | % | No | % | X2 |  |
Lesion |  |  |  |  | Fisher’s |  |
 Mass | 8 | 61.5 | 41 | 87.2 | 4.94 | 0.049 |
 NME | 5 | 38.5 | 6 | 12.8 |  |  |
Enhancement pattern | ||||||
 Homogenous enhancement | 1 | 7.7 | 7 | 14.9 |  |  |
 Heterogenous enhancement | 11 | 84.6 | 29 | 61.7 | 2.45 | 0.29 |
 Rim enhancement | 1 | 7.7 | 11 | 23.4 |  |  |
Shape of mass lesions | ||||||
 Round | 0 | 0.0 | 4 | 9.8 | 3.45 | 0.18 |
 Oval | 0 | 0.0 | 9 | 22.0 |  |  |
 Irregular | 8 | 100 | 28 | 68.3 |  |  |
Margin of mass lesions |  |  |  |  | Fisher’s |  |
 Circumscribed | 0 | 0.0 | 9 | 22.0 | 2.15 | 0.32 |
 Non-circumscribed | 8 | 100 | 32 | 78.0 |  |  |
Kinetic | ||||||
 Plateau | 7 | 53.8 | 25 | 53.2 | 0.84 | 0.66 |
 Washout | 4 | 30.8 | 10 | 21.3 |  |  |
 Persistent | 2 | 15.4 | 12 | 25.55 |  |  |