Table 1.
Clinical and pathologic characteristics of 571 patients
| Characteristics | SLNB(n=323) | ALND(n=248) | P(Chi-square test) |
|---|---|---|---|
| Mean age ±SD |
51.06 ± 9.80 |
51.38 ± 9.54 |
0.540 |
| Axillary recurrence |
|
|
0.119 |
| No |
317 |
238 |
|
| Yes |
6 |
10 |
|
| Recurrence |
|
|
0.001 |
| No |
302 |
209 |
|
| Yes |
20 |
39 |
|
| T stage |
|
|
0.001 |
| pT1 |
232 |
127 |
|
| pT2 |
79 |
104 |
|
| pT3 |
12 |
15 |
|
| pT4 |
0 |
2 |
|
| N stage |
|
|
0.001 |
| pN0 |
256 |
147 |
|
| pN1 |
52 |
85 |
|
| pN2 |
8 |
6 |
|
| pN3 |
7 |
10 |
|
| Stage |
|
|
0.001 |
| Stage I |
199 |
87 |
|
| Stage IIA |
78 |
94 |
|
| Stage IIB |
29 |
40 |
|
| Stage IIIA |
10 |
16 |
|
| Stage IIIB |
0 |
2 |
|
| Stage IIIC |
7 |
9 |
|
| Size of tumor, cm, mean ± SD |
1.84 ± 1.55 |
2.56 ± 2.04 |
0.001 |
| Histology |
|
|
0.003 |
| G1 |
100 |
47 |
|
| G2 |
147 |
73 |
|
| G3 |
62 |
43 |
|
| Nuclear |
|
|
0.015 |
| G1 |
50 |
32 |
|
| G2 |
203 |
136 |
|
| G3 |
63 |
74 |
|
| ER |
|
|
0.495 |
| Negative |
96 |
80 |
|
| Positive |
227 |
167 |
|
| PR |
|
|
0.311 |
| Negative |
119 |
102 |
|
| Positive |
203 |
146 |
|
| IHC |
|
|
0.722 |
| Negative/1+ |
175 |
131 |
|
| 2+ |
78 |
66 |
|
| 3+ |
69 |
48 |
|
| Lymphovascular invasion |
|
|
0.001 |
| No |
226 |
137 |
|
| Yes | 97 | 111 |
SLNB, sentinel lymph node biopsy; ALND; axillary lymph node dissection; ER,estrogen receptor; PR,progesterone receptor; IHC,immunohistochemistry.