TABLE 1.
Patient and Tumor Characteristics
| No. of patients (%) | |||
|---|---|---|---|
| Characteristic | With clips | Without clips | P |
| Median age, y | 47 | 45 | — |
| Tumor classification | .079 | ||
| T1 | 22 (15.2) | 29 (12.7) | |
| T2 | 99 (68.3) | 135 (59.2) | |
| T3 | 21 (14.5) | 53 (23.2) | |
| T4 | 3 (2.1) | 11 (4.8) | |
| Lymph node classification | <.001 | ||
| N0 | 75 (51.7) | 70 (30.7) | |
| N1 | 51 (35.2) | 102 (44.7) | |
| N2 | 9 (6.2) | 37 (16.2) | |
| N3 | 10 (6.9) | 19 (8.3) | |
| Stage | .001 | ||
| I | 10 (6.9) | 11 (4.8) | |
| II | 106 (73.1) | 131 (57.5) | |
| III | 29 (20) | 86 (37.7) | |
| Margins | .368 | ||
| Negative | 129 (89) | 191 (83.8) | |
| Close | 12 (8.3) | 23 (10.1) | |
| Positive | 4 (2.8) | 12 (5.3) | |
| Estrogen receptor status | .250 | ||
| Positive | 65 (44.8) | 96 (42.1) | |
| Negative | 76 (52.4) | 117 (51.3) | |
| Unknown | 4 (2.8) | 15 (6.6) | |
| Nuclear grade | .697 | ||
| 1 | 8 (5.5) | 16 (7) | |
| 2 | 51 (35.2) | 72 (31.6) | |
| 3 | 86 (59.3) | 140 (61.4) | |
| LVSI | .005 | ||
| Positive | 17 (11.7) | 48 (21.1) | |
| Negative | 101 (69.7) | 159 (69.7) | |
| Unknown | 27 (18.6) | 21 (9.2) | |
| Total | 145 | 228 | |
LVSI indicates lymphovascular space invasion.