Table 3.
Comparison of histopathologic characteristics of fibroadenomas exhibiting ADC above or below a predetermined ADC malignancy threshold
| Histopathologic Parameter | Categories | n | ADC threshold (1.81×10−3 mm2/s) (1) | p-value | |
|---|---|---|---|---|---|
| N above (17 total) | N below (9 total) | ||||
| Epithelial Hyperplasia | Present | 8 | 3 | 5 | 0.07 |
| Absent | 18 | 14 | 4 | ||
| Stromal Cellularity | Low | 22 | 14 | 8 | 1.00 |
| High | 4 | 3 | 1 | ||
| Immune Cell Infiltration | Present | 9 | 6 | 3 | 1.0 |
| Absent | 17 | 11 | 6 | ||
| Stromal Type | Sparse | 12 | 12 | 0 | 0.0007 |
| Dense | 14 | 5 | 9 | ||
Abbreviations: ADC= apparent diffusion coefficient, SD=standard deviation