Table 1.
Basic clinicopathological characteristics of BCBM patients.
| Clinicopathological features | No. (%) |
|---|---|
| Age at initial diagnosis | |
| <40 | 57 (26.5) |
| 40–59 | 141 (65.6) |
| ≥60 | 17 (7.9) |
| TNM stage | |
| I | 8 (3.7) |
| II | 55 (25.6) |
| III | 71 (33.0) |
| IV | 42 (19.5) |
| Unknown | 39 (18.1) |
| Pathology type | |
| Ductal | 192 (89.3) |
| Lobular | 6 (2.8) |
| Other | 7 (3.3) |
| Unknown | 10 (4.7) |
| Histological grade | |
| I | 0 (0) |
| II | 49 (22.8) |
| III | 47 (21.9) |
| Unknown | 119 (55.3) |
| Molecular subtypes | |
| Luminal (HER-) | 75 (34.9) |
| HER2+ | 88 (40.9) |
| Triple negative | 51 (23.7) |
| Unknown | 1 (0.5) |
| Bone metastasis | |
| No | 121 (56.3) |
| Yes | 93 (43.3) |
| Unknown | 1 (0.5) |
| Liver metastases | |
| No | 135 (62.8) |
| Yes | 78 (36.3) |
| Unknown | 2 (0.9) |
| Lung metastasis | |
| No | 108 (50.2) |
| Yes | 107 (49.8) |
| Number of brain metastasis | |
| Single | 41 (19.1) |
| Multiple | 148 (68.8) |
| Unknown | 26 (12.1) |
| Surgical resection of brain tumor | |
| Yes | 42 (20) |
| No | 172 (80) |
| Whole brain radiotherapy | |
| Yes | 122 (56.7) |
| No | 93 (43.3) |
| Stereotactic surgery | |
| Yes | 54 (74.9) |
| No | 161 (25.1) |