Table 2. Pre- and postoperative histopathology in discordant cases from the B3 category.
| CNB/VAB histopathology vs. postoperative histopathology | DCIS G1 (n) | DCIS G2 (n) | DCIS G3 (n) | Poorly differentiated carcinoma (n) | Tubularadeno CA (n) | NST- LCIS- Lobular CA (n) | DCIS G2- NST- LCIS (n) | Total number |
|---|---|---|---|---|---|---|---|---|
| ADH (n) | 1 | 1 | 1 | 3 | ||||
| ADH+PL (n) | 1 | 1 | 1 | 3 | ||||
| PL (n) | 1 | 1 | 1 | 3 | ||||
| LN (n) | 1 | 1 | ||||||
| FEA (n) | 1 | 1 | ||||||
| FEA+LN (n) | 1 | 1 | ||||||
| Total number | 3 | 2 | 3 | 1 | 1 | 1 | 1 | 12 |
ADH = atypical ductal hyperplasia; PL = papillary lesion; LN = non-invasive lobular neoplasia; FEA = flat epithelial atypia; DCIS = ductal carcinoma in-situ; NST = invasive breast carcinoma of no special type; LCIS = lobular carcinoma in-situ; CA = carcinoma; (n) number of patients.