Table 1.
Clinical and pathologic features of primary breast tumors.
| Primary tumors from patients who did not develop distant metastasis | Primary tumors from patients who developed distant metastasis | ||||||
|---|---|---|---|---|---|---|---|
| Luminal A (n = 23) | HER2 (n = 9) | TN (n = 10) | Luminal A (n = 26) | Luminal B (n = 5) | HER2 (n = 4) | TN (n = 5) | |
| Histology | |||||||
| IDC | 22 (96%) | 9 (100%) | 10 (100%) | 20 (77%) | 3 (60%) | 4 (100%) | 5 (100%) |
| ILC | 0 | 0 | 0 | 5 (19%) | 1 (20%) | 0 | 0 |
| Other | 1 (4%) | 0 | 0 | 1 (4%) | 1 (20%) | 0 | 0 |
| Grade | |||||||
| Low | 14 (61%) | 0 | 0 | 2 (8%) | 0 | 0 | 0 |
| Intermediate | 7 (30%) | 1 (11%) | 0 | 18 (70%) | 3 (60%) | 0 | 0 |
| High | 2 (9%) | 8 (89%) | 10 (100%) | 6 (23%) | 2 (40%) | 4 (100%) | 5 (100%) |
| LVI | |||||||
| Present | 2 (9%) | 1 (11%) | 2 (20%) | 13 (50%) | 4 (80%) | 3 (75%) | 3 (60%) |
| Absent | 21 (91%) | 8 (89%) | 8 (80%) | 13 (50%) | 1 (20%) | 1 (25%) | 2 (40%) |
| Lymph node involv. | |||||||
| Present | 5 (22%) | 0 | 0 | 13∗ (68%) | 4∗ (100%) | 3∗ (100%) | 2 (40%) |
| Absent | 18 (78%) | 9 (100%) | 10 (100%) | 6∗ (32%) | 0 | 0 | 3 (60%) |
| Tumor size | |||||||
| ≤2 cm | 22 (96%) | 5 (56%) | 4 (40%) | 6∗ (24%) | 2 (40%) | 0 | 2 (40%) |
| 2.1–5 cm | 1 (4%) | 3 (33%) | 6 (60%) | 14∗ (58%) | 1 (20%) | 2 (50%) | 2 (40%) |
| >5 cm | 0 | 1 (11%) | 0 | 5∗ (20%) | 2 (40%) | 2 (50%) | 1 (20%) |
∗Data not available for all cases within subgroup. TN, triple-negative; IDC, invasive ductal carcinoma; ILC, invasive lobular carcinoma; LVI, lymphovascular invasion; involv., involvement.