Table 5. Histopathology characteristics of 366 breast cancers.
| Characteristic | BMI (kg/m2) | p-value | ||
|---|---|---|---|---|
| 18.5–24.9 No. (%) |
25–29.9 No. (%) |
≥ 30 No. (%) |
||
| Tumor diameter (mm)* | 13 ± 2 | 11 ± 1 | 17 ± 3 | 0.002 |
| T stage | 0.002 | |||
| Tis | 25 (17.9) | 23 (15.5) | 9 (11.5) | |
| T1 mic-a-b | 45 (32.1) | 62 (42.0) | 17 (21.8) | |
| T1c | 50 (35.7) | 50 (33.8) | 31 (39.7) | |
| T2 | 13 (9.3) | 12 (8.1) | 19 (24.4) | |
| T3–T4 | 2 (1.4) | 0 | 2 (2.6) | |
| TX | 5 (3.6) | 1 (0.7) | 0 | |
| N stage† | 0.040 | |||
| N0 | 97 (69.3) | 111 (75.0) | 46 (59.0) | |
| N1 | 26 (18.6) | 22 (14.9) | 23 (29.5) | |
| > N1 | 6 (4.3) | 9 (6.1) | 7 (9.0) | |
| NX | 11 (7.9) | 6 (4.1) | 2 (2.6) | |
| M stage | 0.210 | |||
| M0 | 137 (98.0) | 148 (100) | 77 (99) | |
| M1 | 3 (1.4) | 0 | 1 (0.3) | |
| Grading | 0.480 | |||
| I | 17 (12.3) | 15 (10.1) | 6 (7.7) | |
| II | 66 (47.8) | 75 (50.7) | 38 (48.7) | |
| III | 47 (34.1) | 54 (36.5) | 33 (42.3) | |
| Unknown | 8 (5.8) | 4 (2.7) | 1 (1.3) | |
| Ki-67 (%) | 0.130 | |||
| ≤ 20 | 96 (68.6) | 95 (64.2) | 51 (65.4) | |
| > 20 | 19 (13.6) | 28 (18.9) | 20 (25.6) | |
| Unknown | 25 (17.9) | 25 (16.9) | 7 (9.0) | |
| Hormonal status | 0.950 | |||
| ER+/PR+ | 103 (73.6) | 107 (72.3) | 62 (79.5) | |
| ER+/PR– | 6 (4.3) | 6 (4.1) | 2 (2.6) | |
| ER–/PR+ | 1 (0.7) | 1 (0.7) | 0 | |
| ER–/PR– | 11 (7.9) | 14 (9.5) | 7 (9.0) | |
| Unknown | 19 (13.6) | 20 (13.5) | 7 (9.0) | |
Data are presented as number (%).
BMI=body mass index; ER=estrogen receptor; PR=progesterone receptor.
*Mean ±SD (34 missing value);†N0 =N0+N0i; N1 =N1+N1mic+N1a; >N1=N2+N2a+N3.