|
Feature
|
N (539)
|
%
|
|---|
|
Age (years)
|
|
> 60
|
227
|
42.1
|
|
≤ 60
|
312
|
57.9
|
|
T classification
|
|
T1 (< 2 cm)
|
147
|
27.3
|
|
T2 (2–5 cm)
|
323
|
59.9
|
|
T3 (≥ 5 cm)
|
55
|
10.2
|
|
T4 (chest wall and/or skin invasion)
|
14
|
2.6
|
|
N classification (pN)
|
|
N0 (no metastasis)
|
259
|
48.1
|
|
N1 (1–3 metastasis)
|
178
|
33
|
|
N2 (4–9 metastasis)
|
64
|
11.9
|
|
N3 (≥ 10 metastasis)
|
38
|
7
|
|
M classification
|
|
M0 (no distant metastasis)
|
528
|
98
|
|
M1 (distant metastasis)
|
11
|
2
|
|
TNM stage
|
|
I
|
96
|
17.8
|
|
II
|
318
|
59
|
|
III
|
114
|
21.2
|
|
IV
|
11
|
2
|
|
ER
|
|
Negative
|
127
|
23.6
|
|
Positive
|
412
|
76.4
|
|
PR
|
|
Negative
|
175
|
32.5
|
|
Positive
|
364
|
67.5
|
|
HER2
|
|
Negative
|
440
|
81.6
|
|
Positive
|
99
|
18.4
|
|
Molecular subtypes
|
|
HER2 amplification
|
92
|
17.1
|
|
Luminal A/B
|
419
|
77.7
|
|
TNBC
|
28
|
5.2
|
- T tumor size, N lymph node, M distant metastasis, TNM stage according to AJCC 8th classification, TNBC triple-negative breast cancer
