Table 2.
Tumor characteristics at baseline
| Tumor size (mean and range) N = 65a |
1.2 (0.1–3.0) cm |
| Initial volume of excised tissue (mean and range) | 161.6 (7.20–690.00) mL |
| Tumor characteristics in all patients | 69 (100%) |
| AJCC class | |
| Tis | 20 (29.0%) |
| T1a | 8 (11.6%) |
| T1b | 18 (26.1%) |
| T1c | 20 (29.0%) |
| T2 | 3 (4.4%) |
| Histopathologic grade | |
| Grade 1 well differentiated | 19 (27.5%) |
| Grade 2 moderately differentiated | 21 (30.4%) |
| Grade 3 poorly differentiated | 12 (17.4%) |
| Grade not available | 17 (24.6%) |
| Lesion location (side) | |
| Left side | 42 (60.9%) |
| Right side | 27 (39.1%) |
| Lesion location (vertical) | |
| Upper | 44 (63.8%) |
| Lower | 8 (11.6%) |
| Midline | 17 (24.6%) |
| Lesion location (horizontal) | |
| Outer | 38 (55.1%) |
| Inner | 15 (21.7%) |
| Midline | 16 (23.2%) |
a
Note: Tumor size not recorded in the medical chart of four DCIS patients.
Abbreviation: AJCC, American Joint Committee on Cancer.