Table 2.
Comparison of histologic and mammographic features of the DCIS and invasive groups.
| Feature | DCIS (74) | Invasion (25) | p-value | ||||
|---|---|---|---|---|---|---|---|
|
| |||||||
| Age | 59.8 | 58.2 | p ≤ 0.5330 | ||||
|
| |||||||
| Histologic | Nuclear grade (1–3) | 2.51 | 2.58 | p ≤ 0.6044 | |||
|
|
|||||||
| 1 | 6 | 3 | |||||
|
|
|||||||
| 2 | 27 | 6 | |||||
|
|
|||||||
| 3 | 41 | 16 | |||||
|
|
|||||||
| Subtype of DCIS | p ≤ 0.5250 | ||||||
|
|
|||||||
| Comedo | 36 | 14 | |||||
|
| |||||||
| Non-Comedo | 38 | 11 | |||||
|
| |||||||
| Radiologist-A | Radiologist-B | ||||||
|
|
|||||||
| Mammographic | Size of lesion | ||||||
|
|
|||||||
| Area (mm^2) | 210.3 | 369.0 | p ≤ 0.2257 | 182.5 | 442.9 | p ≤ 0.0305 * | |
| Major Axis (mm) | 16.7 | 24.8 | p ≤ 0.0496 * | 17.3 | 25.4 | p ≤ 0.0345 * | |
|
|
|||||||
| Morphology of calcifications | p ≤ 0.0704 | p ≤ 0.8690 | |||||
|
|
|||||||
| Low Risk (Typically benign) | 0 | 1 | 0 | 0 | |||
|
|
|||||||
| Medium Risk (Amorphous/Coarse heterogeneous) | 41 | 7 | 16 | 5 | |||
|
|
|||||||
| High Risk (Fine pleomorphic/Fine linear) | 33 | 17 | 58 | 20 | |||
|
|
|||||||
| Distribution of calcifications | p ≤ 0.6653 | p ≤ 0.2056 | |||||
|
|
|||||||
| Regional | 2 | 0 | 11 | 3 | |||
|
|
|||||||
| Segmental | 5 | 3 | 3 | 4 | |||
|
|
|||||||
| Linear | 2 | 1 | 15 | 7 | |||
|
|
|||||||
| Clustered | 65 | 21 | 45 | 11 | |||
|
|
|||||||
| BI-RADS level of suspicion | p ≤ 0.0247 * | p ≤ 0.0321* | |||||
|
|
|||||||
| 4a | 40 | 7 | 1 | 1 | |||
|
|
|||||||
| 4b | 17 | 8 | 35 | 6 | |||
|
|
|||||||
| 4c | 14 | 8 | 23 | 7 | |||
|
|
|||||||
| 5 | 3 | 2 | 15 | 11 | |||
|
|
|||||||
| Radiologist’s score of being invasive | 14.5 | 21.0 | p ≤ 0.0052 * | 32.2 | 35.4 | p ≤ 0.4965 | |
*
Difference for the comparison was statistically significant.