Table 2.
Lesion visibility of discrepant cancers, related to breast density and to lesion periphery in tissue with pre-dominately fatty attenuation in digital breast tomosynthesis (DBT) only group and digital mammography (DM) only group, respectively
| Breast density |
Periphery in fat |
||||||
|---|---|---|---|---|---|---|---|
| Breast density | DBT only group (n) | DM only group (n) | Periphery in fat | DBT only groupa |
DM only group |
||
| DBT (n) | DM (n) | DBT (n) | DM (n) | ||||
| Fatty | 2 | 0 | <25% | 3 | 8 | 1 | 1 |
| Scattered densities | 6 | 5 | 25–50% | 7 | 6 | 2 | 2 |
| Heterogeneously dense | 8 | 2 | 50–75% | 4 | 3 | 2 | 2 |
| Dense | 3 | 0 | >75% | 5 | 2 | 2 | 1 |
a
One case was excluded from the DM only group, owing to lack of a mass, and therefore had no definable lesion periphery (ductal carcinoma in situ).