Table 2.
Clinicopathological parameters of formalin-fixed paraffin-embedded breast cancer specimens (n = 150)
| Variables | Numbera | Percentage |
| Clinicopathological factors | ||
| Age at diagnosisb | ||
| ≤ 59 years | 83 | 55.3 |
| > 59 years | 67 | 44.7 |
| Tumour sizec | ||
| pT1 | 48 | 32.0 |
| pT2 | 71 | 47.3 |
| pT3 | 9 | 6.0 |
| pT4 | 20 | 13.3 |
| pTx | 2 | 1.3 |
| Lymph node statusc | ||
| pN0 | 67 | 44.7 |
| pN1 | 35 | 23.3 |
| pN2 | 25 | 16.7 |
| pN3 | 20 | 13.3 |
| pNx | 3 | 2.0 |
| Histological grade | ||
| G1 | 13 | 8.7 |
| G2 | 70 | 46.7 |
| G3 | 66 | 44.0 |
| NA | 1 | 0.7 |
| Histological type | ||
| Ductal | 122 | 81.3 |
| Lobular | 12 | 18.0 |
| Other | 16 | 10.7 |
| Tumour focality | ||
| Unifocal | 130 | 86.7 |
| Multifocal | 19 | 12.7 |
| NA | 1 | 0.7 |
| Immunohistochemistry | ||
| Oestrogen receptor | ||
| Negative (IRSd ≤ 2) | 38 | 25.3 |
| Positive (IRS > 2) | 83 | 55.3 |
| NA | 29 | 19.3 |
| Progesterone receptor | ||
| Negative (IRSd ≤ 2) | 85 | 56.7 |
| Positive (IRS > 2) | 40 | 26.7 |
| NA | 25 | 16.7 |
| Her2 status | ||
| Negative (DAKO score 0; 1+) | 105 | 70.0 |
| Positive (DAKO score 2+; 3+) | 23 | 15.3 |
| NA | 22 | 14.7 |
Due to rounding, percentages may not sum to 100. aOnly female patients with primary invasive breast cancer were included. bMedian 59 years, range 29 to 82 years. cAccording to the UICC (Union Internationale contre le Cancer): TNM Classification of Malignant Tumours [19]. dImmunoreactivity score (IRS) according to Remmele and Stegner [24]. NA, information not available.