Table 1. Patient and tumor demographics.
| Low MBD Patients | High MBD Patients | |
| # of Patients | 38 | 32 |
| Avg. Age (range) | 61.9 (43–87) | 56.8 (36–83) |
| Avg. BMI (range) | 31.7 (18.3–49.2) | 28.1 (18.4–43.7) |
| Tumor Receptor Status | ||
| ER +,− | 33 (86.8%), 5 (13.2%) | 27 (84.4%), 4 (12.5%) |
| PR +,− | 29 (76.3%), 9 (23.7%) | 25 (78.1%), 6 (18.8%) |
| HER-2/neu +,− | 0 (0%), 33 (86.8%) | 5 (15.6%), 20 (62.5%) |
| Triple-negative | 4 (10.5%) | 0 (0%) |
| Avg. Lumpectomy Volume (range) | 63.7 cm3 (10.2–192.0 cm3 ) | 49.5 cm3 (9.5–175.9 cm3 ) |
| Primary Tumor Histology | ||
| IDC | 4 (10.5%) | 3 (9.4%) |
| DCIS | 4 (10.5%) | 5 (15.6%) |
| IDC/DCIS | 16 (42.1%) | 17 (53.1%) |
| Other | 4 (10.5%) | 3 (9.4%) |
| No Tumor | 0 (0%) | 1 (3.1%) |
| Avg. Invasive Component Size (range) | 1.68 cm (0.6–4.3 cm) | 1.59 cm (0.4–3.6 cm) |
| Avg. In situ Component Size (range) | 3.33 cm (0.1–10 cm) | 3.04 cm (0.1–7 cm) |
| Measured Margin Histology | ||
| IDC | 8 (16.7%) | 6 (15.0%) |
| DCIS | 8 (16.7%) | 9 (22.5%) |
| IDC/DCIS | 1 (2.1%) | 1 (2.5%) |
| Other | 6 (12.5%) | 7 (17.5%) |
| No Tumor | 25 (52.1%) | 17 (42.5%) |
| Surgical Margin Status | ||
| Negative (>2 mm) | 25 (52.1%) | 17 (42.5%) |
| Close (<2 mm) | 15 (31.3%) | 14 (35.0%) |
| Positive | 8 (16.7%) | 9 (22.5%) |
| Measured Margin | ||
| Anterior | 10 (20.8%) | 7 (17.5%) |
| Posterior | 11 (22.9%) | 12 (30.0%) |
| Superior | 7 (14.6%) | 8 (20.0%) |
| Inferior | 8 (16.7%) | 4 (10.0%) |
| Medial | 6 (12.5%) | 6 (15.0%) |
| Lateral | 6 (12.5%) | 3 (7.5%) |
BMI – body mass index, IDC – invasive ductal carcinoma, DCIS – ductal carcinoma in situ.