Patient Characteristics
| Parameter | Data |
| Age (y) | 57.5 ± 7.4 |
| Body mass index (kg/m2) | 27.2 ± 3.3 |
| Injection protocol | |
| 1-d | 4 (21.1%) |
| 2-d | 15 (78.9%) |
| Surgery | |
| Lumpectomy | 16 (84.2%) |
| Mastectomy | 3 (15.8%) |
| T stage | |
| Tis | 1 (5.3%) |
| T1 | 7 (36.8%) |
| T2 | 8 (42.1%) |
| T3 | 3 (15.8%) |
| Estrogen receptor | |
| Positive | 17 (89.5%) |
| Negative | 2 (10.5%) |
| Progesterone receptor | |
| Positive | 17 (89.5%) |
| Negative | 2 (10.5%) |
| Her2 receptor | |
| Positive | 1 (5.3%) |
| Negative | 18 (94.7%) |
| Lymphoscintigraphy | |
| Performed | 17 (89.5%) |
| Nodal uptake | 13 (76.5%) |
| Not performed | 2 (10.5%) |
Data are mean ± SD or number followed by percentage in parentheses (n = 19 patients).