Table 1.
Clinicopathological features of patients with ductal carcinoma in situ (DCIS) and adjacent invasive breast cancer (IBC) (n = 53).
| Characteristic | n | (%) |
|---|---|---|
| Age at diagnosis | 53 | |
| years, median (range) | (28–102) | |
| Type of surgery | ||
| Breast-conserving surgery | 24 | 45.3 |
| Mastectomy | 29 | 54.7 |
| Grade DCIS | ||
| 1 | 1 | 49.1 |
| 2 | 19 | 39.6 |
| 3 | 33 | 7.5 |
| Grade IBC | ||
| 1 | 1 | 49.1 |
| 2 | 21 | 39.6 |
| 3 | 31 | 7.5 |
| Tumor size | ||
| ≤2 cm | 28 | 49.1 |
| >2–5 cm | 21 | 39.6 |
| >5 cm | 4 | 7.5 |
| Missing | 0 | 3.8 |
| Subtypes based on immunohistochemistry | ||
| ER+/PR high/Her2− | 13 | 24.5 |
| ER+/PR− or low/Her2− | 12 | 22.6 |
| ER+/any PR/Her2+ | 11 | 20.8 |
| ER−/PR−/Her2+ | 8 | 15.1 |
| ER−/PR−/Her2− | 9 | 17.0 |