Table 1.
Comparison of patient and tumor characteristics between palpation-guided and US-guided lumpectomy groups
| Characteristic | Palpation-guided lumpectomy | US-guided lumpectomy | p value |
|---|---|---|---|
| Age, mean (SD), y | 51.1 (12.8) | 53.4 (13.3) | 0.25 |
| Body mass index, mean (SD) | 25.2 (4.5) | 25.1 (3.5) | 0.8 |
| Menopausal status | |||
| Premenopausal | 37 (46 %) | 30 (36 %) | |
| Postmenopausal | 43 (54 %) | 54 (64 %) | 0.2 |
| Tumor location | |||
| Outer | 59 (74 %) | 56 (67 %) | |
| Inner | 21 (26 %) | 28 (33 %) | 0.39 |
| Tumor size | |||
| 1–10 mm | 6 (7 %) | 11 (13 %) | |
| 11–20 mm | 31 (39 %) | 29 (35 %) | |
| >20 mm | 43 (54 %) | 44 (52 %) | 0.26 |
| Lymph node status | |||
| Negative | 49 (61 %) | 54 (64 %) | |
| Positive | 31 (39 %) | 30 (36 %) | 0.74 |
| Grade | |||
| 1 | 12 (15 %) | 10 (12 %) | |
| 2 | 36 (45 %) | 44 (52 %) | |
| 3 | 32 (40 %) | 30 (36 %) | 0.62 |
| EICa | |||
| Yes | 26 (33 %) | 22 (26 %) | |
| No | 54 (67 %) | 62 (74 %) | 0.39 |
| Lymphovascular invasion | |||
| Yes | 45 (56 %) | 50 (60 %) | |
| No | 35 (44 %) | 34 (40 %) | 0.75 |
| Multifocality | |||
| Yes | 17 (21 %) | 11 (13 %) | |
| No | 63 (79 %) | 73 (87 %) | 0.21 |
| ER | |||
| Positive | 64 (80 %) | 73 (87 %) | |
| Negative | 16 (20 %) | 11 (13 %) | 0.29 |
| PR | |||
| Positive | 54 (67 %) | 65 (77 %) | |
| Negative | 26 (33 %) | 19 (23 %) | 0.17 |
| HER2-neu status | |||
| Amplified | 15 (19 %) | 15 (18 %) | |
| Nonamplified | 65 (81 %) | 69 (82 %) | 0.88 |
EIC extensive intraductal component