Clinicopathological features of breast cancer patients with internal mammary and/or supraclavicular lymph node recurrence without distant metastasis

Table 1 Clinicopathological characteristics of patients with IM-SC LN recurrence and DM

Characteristics	Patients with IM-SC LN recurrence (n = 14)	Patients with distant metastasis (n = 274)	P-value
Disease-free survival, month (mean ± SD)	30.71 ± 6.87	33.25 ± 1.63	0.732
Age, years (mean ± SD)	45.36 ± 3.892	52.5 ± 12.93	0.093
Menopausal status at primary surgery
Pre-	9	133	0.250
Post-	5	141
Clinical T stage^a
T1	3	44	0.615
T2	9	160
T3	2	41
T4	0	29
Clinical N stage^a
0	6	121	0.732
1	6	102
2	1	9
3	1	42
Clinical stage^a
I	2	32	0.311
II	10	149
III	2	93
Perioperative chemotherapy
No	4	52	0.376
Yes	10	222
Surgical procedure of the primary tumor
Partial mastectomy	4	79	0.983
Mastectomy	10	195
Pathological LN status of the primary tumor
Negative	7	87	0.156
Positive	7	187
LI status of the primary tumor
Negative	6	87	0.260
Positive	8	187
ER status
Positive	5	168	0.152
Negative	9	105
HER2 status
Positive	5	35	0.111
Negative	9	238

^aTNM classification is shown based on the eighth edition of the Union for International Cancer Control staging system
DM Distant metastasis, ER, Estrogen receptor, HER2 Human epidermal growth factor receptor 2, IM-SC Internal mammary and/or supraclavicular, LN Lymph node, LI Lymphatic invasion, SD Standard deviation

ISSN: 1471-2407