Table 2.
Microscopic and macroscopic characters of tumor in case and control groups
| Series | Variable | TNBC | N-TNBC | p-value |
|---|---|---|---|---|
| 1 | Tumor type | |||
| IDC or ILC | 27 (90%) | 167 (90.8) | 0.80 | |
| DCIS | 3 (10%) | 6 (3.3%) | 0.04 | |
| LCIS | - | 10 (5.4%) | 0.001 | |
| MC | - | 1 (0.5%) | - | |
| 2 | Tumor histologic grading | |||
| I | 3 (10%) | 15 (8.2%) | 0.87 | |
| II | 26 (86.7%) | 152 (82.6%) | 0.66 | |
| III | 1 (3.3%) | 17 (9.2%) | 0.02 | |
| 3 | Nuclear grading | |||
| I | 4 (13.3%) | 14 (7.6%) | 0.05 | |
| II | 24 (80%) | 147 (79.9%) | 0.91 | |
| III | 2 (6.7%) | 23 (12.5%) | 0.01 | |
| 4 | Tumor side | |||
| Right | 17 (56.7%) | 108 (58.7%) | 0.79 | |
| Left | 13 (43.3%) | 75 (40.8%) | 0.65 | |
| Bilateral | - | 1 (0.5%) | - | |
| 5 | Tumor location | |||
| RUQ | 21 (70%) | 108 (58.7%) | 0.09 | |
| RLQ | 3 (10%) | 25 (13.6%) | 0.76 | |
| LUQ | 3 (10%) | 16 (8.7%) | 0.87 | |
| LLQ | 1 (3.3%) | 26 (14.1%) | 0.01 | |
| Subareol | 2 (6.7%) | 8 (4.3%) | 0.06 | |
| All sides | - | 1 (0.5%) | - |
TNBC: Triple-negative breast cancer, N-TNBC: Non-triple-negative breast cancer, DCIS: Ductal carcinoma in situ, LCIS: Lobular carcinoma in situ, IDC: Invasive (or infiltrating) ductal carcinoma, ILC: Invasive (or infiltrating) lobular carcinoma, MC: Medullary carcinoma, RUQ: Right upper quadrant, RLQ: Right upper quadrant, LUQ: Left upper quadrant, LLQ: Left lower quadrant