Table 5. Ki-67 Proliferation Indices of Patients with Breast-to-Brain Metastases treated with CKRS.
* All Ki-67 indices were obtained using tissue from the primary breast carcinoma resections.
CKRS = CyberKnife radiosurgery; No. = number; MRI = magnetic resonance imaging
| Patient No. | Breast Cancer Type | Ki-67 (%) | Brain MRI Outcome |
| 1 | Interlobular | 90 | Complete Response |
| 2 | Invasive Ductal Carcinoma | 50 | Complete Response |
| 3 | Invasive Ductal Carcinoma | 50 | Partial Response |
| 4 | Invasive Ductal Carcinoma | 34 | Partial Response |
| 5 | Invasive Ductal Carcinoma | 50 | Stable |
| 6 | Invasive Ductal Carcinoma | 20 | Local Failure |
| 7 | Invasive Ductal Carcinoma | 15 | Local Failure |
| 8 | Invasive Ductal Carcinoma | 15 | Local Failure |
| 9 | Intralobular | 0 | Local Failure |