From: Intraoperative ultrasound reduces the need for re-excision in breast-conserving surgery
Characteristic | Palpation-guided lumpectomy | US-guided lumpectomy | p value |
---|---|---|---|
Tumor size, mean (SD) | 24.9 (12.2) | 22.8 (10.8) | 0.24 |
Resection volume at first excision, cubic centimeter, (SD) | 108.1 (63.4) | 89.9 (53.9) | 0.048 |
Intraoperative re-excision | |||
Yes | 30 (37 %) | 24 (29 %) | |
No | 50 (63 %) | 60 (71 %) | 0.25 |
Need for second operation to achieve adequate margins | |||
Yes | 14 (17 %) | 5 (6 %) | |
No | 66 (83 %) | 79 (94 %) | 0.03 |
Tumor identified at intraoperative re-excision specimen | |||
Yes | 5 (17 %) | 7 (29 %) | |
No | 25 (83 %) | 17 (71 %) | 0.33 |
Tumor identified at second operation specimen | |||
Yes | 7 (50 %) | 3 (60 %) | |
No | 7 (50 %) | 2 (40 %) | 0.9 |