Table 4.
Histology
| Histology N (%) | Group A (N = 65) | Group B (N = 31) | P* |
|---|---|---|---|
| DCIS | 9 (13.8) | 7 (22.5) | 0.036 |
| Invasive | |||
| NST | 32 (49.2) | 15 (48.4) | |
| Lobular | 9 (13.8) | 4 (12.9) | |
| Tubular | 1 (1.5) | 4 (12.9) | |
| Mixed | 3 (4.6) | 1 (3.2) | |
| Benign | 10 (15.4) | 0 (0) | |
| PcR | 1 (1.5) | 0 (0) | 1.000 |
| Grading | |||
| G1 | 3 (4.6) | 4 (12.9) | 0.382 |
| G2 | 17 (26.1) | 10 (32.2) | |
| G3 | 31 (47.7) | 14 (45.1) | |
| Endolymphatic invasion | 10 (15.3) | 2 (6.5) | 0.200 |
| Endovascular invasion | 18 (27.7) | 5 (16.1) | 0.133 |
| Estrogen receptor | 39 (60.0) | 25 (80.5) | 0.553 |
| Progesterone receptor | 32 (49.2) | 18 (58.1) | 1.000 |
| Her2 | |||
| 0 | 20 (30.7) | 9 (29.0) | 0.380 |
| 1 + | 19 (29.2) | 9 (29.0) | |
| 2 + | 4 (6.2) | 5 (16.1) | |
| 3 + | 2 (3.1) | 3 (11.5) | |
| Ki67 | 18.4 ± 14.2 | 19.4 ± 17.5 | 0.791 |
| Positive deep margin | 4 (6.2) | 3 (9.7) | 0.681 |
| Multicentric/multifocal | 23 (35.4) | 20 (64.5) | 0.016 |
Data shown as average ± standard deviation or as absolute frequency with percentage in brackets. Group A one-stage reconstruction, Group B two-stage reconstruction. PcR Pathological complete response after neoadjuvant *Student’s t test for independent samples for continuous values or χ2/Fisher’s exact test for ordinal/binomial variables. Bold emphasized values are statistically significant