Table 2.
Clinical and pathological features of patients with primary breast cancer in different age groups, n (%)
|
|
< 40 yr
|
40-59 yr
|
≥ 60 yr
|
χ
2
|
P
value
|
| Left | 14 (41.2) | 50 (54.3) | 9 (39.1) | 4.246 | 0.374 |
| Right | 20 (58.8) | 40 (43.5) | 13 (56.5) | ||
| Bilateral | 0 (0.0) | 2(2.2) | 1 (4.3) | ||
| Carcinoma in situ | 4 (11.8) | 16 (17.4) | 1 (4.3) | 2.783 | 0.249 |
| Invasive carcinoma | 30 (88.2) | 76 (82.6) | 22 (95.7) | ||
| Tis | 2 (5.9) | 14 (15.2) | 0 (0.0) | 15.469 | 0.051 |
| T1 | 16 (47.1) | 31 (33.7) | 10 (43.5) | ||
| T2 | 12 (35.3) | 38 (41.3) | 9 (39.1) | ||
| T3 | 4 (11.8) | 7 (7.6) | 1 (4.3) | ||
| T4 | 0 (0.0) | 2 (2.2) | 3 (13.0) | ||
| N0 | 17 (50.0) | 57 (62.0) | 10 (43.5) | 6.486 | 0.371 |
| N1 | 11 (32.4) | 19 (20.7) | 8 (34.8) | ||
| N2 | 5 (14.7) | 8 (8.7) | 2 (8.7) | ||
| N3 | 1 (2.9) | 8 (8.7) | 3 (13.0) | ||
| M0 | 34 (100) | 9 1(98.9) | 21 (91.3) | 6.304 | 0.043 |
| M1 | 0 (0.0) | 1 (1.1) | 2 (8.7) | ||
| Luminal A | 7 (20.6) | 16 (17.4) | 8 (34.8) | 6.154 | 0.63 |
| Luminal B(HER2 negative) | 13 (38.2) | 32 (34.8) | 9 (39.1) | ||
| Luminal B (HER2 positive) | 8 (23.5) | 28 (30.4) | 3 (13.0) | ||
| HER2 over expression type | 3 (8.8) | 6 (6.5) | 2 (8.7) | ||
| Three negative type | 3 (8.8) | 10 (10.9) | 1 (4.3) |
HER2: Human epidermal growth factor receptor 2.