Table 1 Value of each sign for the diagnosis of benign and malignant lesions
From: Subcategorization of suspicious non-mass-like enhancement lesions(BI-RADS-MRI Category4)
Benign or malignant | Fisher’s exact test or X2 test | OR value | ||
|---|---|---|---|---|
Benign | Malignant | |||
Distribution | ||||
Linear | 7 | 7 | P < 0.01 | 8.70 (P = 0.0001) |
Segmental (including the distribution along the duct) | 11 | 57 | ||
Focal | 14 | 9 | ||
Regional | 9 | 2 | ||
Multiregional | 4 | 0 | ||
Diffuse | 0 | 2 | ||
Enhancement pattern | ||||
Homogeneous | 2 | 3 | P < 0.01 | 6.29 (P = 0.0035) |
Heterogeneous | 29 | 26 | ||
Clustered | 6 | 46 | ||
Clustered ring | 7 | 2 | ||
T2WI signal | ||||
Hypointense | 1 | 2 | P = 0.559 | |
Isointense | 11 | 25 | ||
Slightly hyperintense | 18 | 33 | ||
Hyperintense | 15 | 17 | ||
Enhancement rate | ||||
Less than 50% | 3 | 0 | P = 0.056 | |
50–100% | 16 | 24 | ||
Greater than 100% | 26 | 53 | ||
TIC curve | ||||
Type I | 20 | 6 | P < 0.01 | |
Type II | 24 | 56 | ||
Type III | 1 | 15 | ||
Vascular sign | ||||
Positive | 10 | 54 | P < 0.01 | 4.56 (P = 0.0072) |
Negative | 35 | 23 | ||
ADC value | ||||
> 1.40 × 10–3 mm2/s | 23 | 12 | P < 0.01 | 2.84 (P = 0.0008) |
≤ 1.40 × 10–3 mm2/s | 22 | 65 | ||