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Table 1 Basic demographic data of all evaluable breast cancer cases (n = 990)

From: Expression of RET is associated with Oestrogen receptor expression but lacks prognostic significance in breast cancer

Mean tumour size (mm) ± SD 32 ± 18
Mean age at diagnosis (years) ± SD 64 ± 14
  Number Percentage
(n) (%)
Tumour stage
 pT1 236 23.8
 pT2 541 54.6
 pT3 85 8.6
 pT4 127 12.8
 NA 1 0.2
Lymph node involvement
 pN0 508 51.3
 pN1 370 37.4
 pN2 98 9.9
 pN3 8 0.8
 NA 6 0.6
Tumour grade
 1 206 20.8
 2 354 35.8
 3 429 43.3
 NA 1 0.1
Histologic subtype
 Invasive ductal 739 74.6
 Invasive lobular 107 10.8
 Mucinous 25 2.5
 Apocrine 19 1.9
 Cribriform 32 3.2
 Others 65 6.6
 NA 3 0.4
Intrinsic subtype
 Luminal A-like (ER+and/or PR+, HER2, Ki-67 < 14%) 124 12.5
 Luminal B-like (HER2-negative) (ER+and/or PR+, HER2, Ki-67 ≥ 14%) 435 43.9
 Luminal B-like (HER2-positive) (ER+and/or PR+, HER2+) 90 9.1
 HER2 type (ER, PR, HER2+) 77 7.8
 Basal-like (ER, PR, HER2) 260 26.3
 NA 4 0.4