Feasibility of sentinel lymph node biopsy in breast cancer patients clinically suspected of axillary lymph node metastasis on preoperative imaging

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.

ISSN: 1477-7819