Table 1 Clinicopathologic characteristics of 233 invasive breast cancer patients studied for receptor conversion in distant metastases
From: Receptor conversion in distant breast cancer metastases
| Feature | Grouping | N or value | % |
|---|---|---|---|
| Age (years) | Mean | 53.9 | |
| Range | 25 to 93 | ||
| Tumor size (cm) | ≤2 | 73 | 31.3 |
| > 2 and ≤5 | 80 | 34.3 | |
| > 5 | 12 | 5.2 | |
| Not available | 68 | 29.2 | |
| Histologic type | Invasive ductal cancer | 192 | 82.4 |
| Invasive lobular cancer | 20 | 8.6 | |
| Others | 20 | 8.6 | |
| Not available | 1 | 0.4 | |
| Histologic grade | 1 | 8 | 3.4 |
| 2 | 61 | 26.2 | |
| 3 | 161 | 69.1 | |
| Not available | 3 | 1.3 | |
| MAI (per 2 mm2) | Mean | 25 | |
| Range | 0 to 172 | ||
| ≤12 | 71 | 30.5 | |
| ≥13 | 156 | 67.0 | |
| Not available | 6 | 2.5 | |
| Lymph node status | Positive | 119 | 51.1 |
| Negative | 81 | 34.8 | |
| Not available | 33 | 14.2 | |
| Site of distant metastases | Brain | 44 | 18.9 |
| Lung | 43 | 18.5 | |
| Liver | 63 | 27.0 | |
| Skin | 76 | 32.6 | |
| Gastro-intestinal | 7 | 3.0 |
