Operative and tumour characteristics
| Characteristic | Pre-OPBS (n = 12) | Post-OPBS (n = 20) | p value |
|---|---|---|---|
| Fine wire localized, no. (%) | 8 (66.7) | 13 (65.0) | 0.92 |
| Operative time, mean (range), min | 46.4 (20–70) | 61.0 (34–95) | 0.026 |
| Tumour size | |||
| Maximum dimension, mean (range), mm | 28.8 (9–80) | 24.0 (8–75) | 0.85 |
| Specimen mass, mean (range), g | 33.0 (21–56) | 107.6 (21–319) | 0.037 |
| Positive margin rate, no. (%) | 3 (25) | 2 (10.0) | 0.26 |
| Oncoplastic technique, no. (%) | |||
| Crescent | 0 (0) | 7 (35.0) | |
| Hemibatwing | 0 (0) | 4 (20.0) | |
| Racquet mammoplasty | 0 (0) | 3 (15.0) | |
| Inframammary ellipse | 0 (0) | 1 (5.0) | |
| Peripheral incision | 0 (0) | 1 (5.0) | |
| Round block (doughnut mastopexy) | 0 (0) | 2 (10.0) | |
| Inverted T mammoplasty | 0 (0) | 1 (5.0) | |
| Reduction mastopexy | 0 (0) | 1 (5.0) | |
| Completion mastectomy | 33.3% (4) | 0 (0) | 0.014 |
| Re-excision of margins | 0 (0) | 2 (10.0) | 0.52 |
| Total no. of mastectomies performed within study period | 15 | 20 | |
| Breast conservation rate, no. (%) | 8/27 (30) | 20/40 (50) | 0.048 |
OPBS= Oncoplastic breast surgery.