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. 2023 Jul 27;30(6):976–985. doi: 10.1007/s12282-023-01488-9

Table 1.

Demographic data and tumor characteristics of the 2473 Patients

N = 2473 N (%), MEANS ± SD
Age, Y 54.0 ± 11.2
Location
 Right 1194 (48.3)
 Left 1279 (51.7)
Biopsy method (N/A = 37)
 Us-guided core needle biopsy 2302 (94.5)
 Stereotactic vacuum-assisted biopsy 53 (2.2)
 Excisional biopsy 72 (3.0)
 Fine needle aspiration 5 (0.2)
 Stereotactic core needle biopsy 4 (0.2)
Tumor size, cm 2.3 (1.6)
Lymph node
 Positive 861 (34.8)
 Negative 1612 (65.2)
Lymph node stage
 N0 1612 (65.2)
 N1 644 (26.0)
 N2 142 (5.7)
 N3 75 (3.0)
Stage
 I 1013 (41.0)
 II 1192 (48.2)
 III 253 (10.2)
 IV 15 (0.6)
Pathology (N/A = 17)
 IDC 2214 (90.1)
 ILC 123 (5.0)
 Other 119 (4.8)
Grade (N/A = 54)
 I 528 (21.8)
 II 1345 (55.6)
 III 546 (22.6)
ER (N/A = 16)
 Positive 2035 (82.8)
 Negative 422 (17.2)
PR (N/A = 17)
 Positive 1815 (73.9)
 Negative 641 (26.1)
HER-2 (N/A = 82)
 Positive 468 (19.6)
 Negative 1923 (80.4)
Subtype (N/A = 106)
 Luminal A 932 (39.4)
 Luminal B1 760 (32.1)
 Luminal B2 307 (13.0)
 HER-2( +) 176 (7.4)
 TNBC 192 (8.1)
Ki-67 (N/A = 216)
 ≦14 942 41.7)
  > 14 1315 (58.3)

N/A not available, ER estrogen receptor, PR progesterone receptor, HER-2 human epidermal growth factor receptor 2, TNBC triple-negative breast cancer, IDC invasive ductal carcinoma, ILC invasive lobular carcinoma