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. 2023 Aug 18;149(16):14833–14841. doi: 10.1007/s00432-023-05276-y

Table 2.

Pathological features of the patients

Number of patients (%) Valid (%)
Histological type
 IDC 252 70.6 71.6
 Invasive lobular carcinoma 23 6.4 6.5
 Other types (mixed type, micropapillary, etc.) 77 21.6 21.9
 Unknown 5 1.4
ER status
 Positive 269 75.4 80.3
 Negative 66 18.5 19.7
 Unknown 22 6.1
PR status
 Positive 205 57.4 62.1
 Negative 125 35 37.9
 Unknown 27 7.6
HER2 overexpression
 Positive 49 13.7 84.1
 Negative 259 72.6 15.9
 Unknown 49 13.7
Tumor focality
 Multifocal 56 15.7 16
 Unifocal 295 82.6 84
 Unknown 6 1.7
Tumor centricity
 Multicentric 9 2.5 2.6
 Unicentric 341 95.5 97.4
 Unknown 7 2
Tumor histologic grade
 Grade 1 61 17.1 18.9
 Grade 2 156 43.7 48.3
 Grade 3 106 29.7 32.8
 Unknown 34 9.5
In situ component
 Yes 218 61.1 75.4
 No 71 19.9 24.6
 Unknown 68 19
Necrosis
 Yes 50 14 16.8
 No 248 69.5 83.2
 Unknown 59 16.5
Lenfvascular invasion
 Yes 68 19 22.4
 No 235 65.8 77.6
 Unknown 54 15.2
Surgical margin status
 Positive 27 7.5 7.8
 Negative 319 89.4 92.2
 Unknown 11 3.1
Ki67 levels %
 Ki67 ≤ 20 119 33.3 55.1
 Ki67 > 20 97 27.2 44.9
 Unknown 141 39.5