Table 1 Number and percentage of index cases with each of the tumour morphology features
Feature | All index cases | Subgroup of index cases | ||
|---|---|---|---|---|
|  | N = 452†| % | N = 375‡ | % |
Number of mitoses >50 | 71 | 15.7 | 33 | 8.8 |
Nuclear grade - malignant | 386 | 85.4 | 316 | 84.3 |
Tubule formation <10 | 344 | 76.1 | 283 | 75.5 |
Syncytial pattern ≥75% | 36 | 8.0 | 21 | 5.6 |
Circumscribed | 93 | 20.6 | 56 | 14.9 |
Pushing margins | 16 | 3.5 | 11 | 2.9 |
Lymphocytic infiltrate I - diffuse | 162 | 35.8 | 136 | 36.3 |
Lymphocytic infiltrate II - intense | 96 | 21.2 | 69 | 18.4 |
Glandular growth pattern | 307 | 67.9 | 272 | 75.5 |
Lobular growth pattern | 162 | 35.8 | 147 | 39.2 |
Trabecular growth pattern | 109 | 24.1 | 65 | 17.3 |
Tubular growth pattern | 74 | 16.4 | 64 | 17.1 |
Acinar growth pattern | 87 | 19.3 | 60 | 16.0 |
Sclerosis - extensive | 420 | 92.9 | 356 | 94.9 |
Extensive intraductal carcinoma | 70 | 15.5 | 63 | 16.8 |
Necrosis | 173 | 38.3 | 126 | 33.6 |
Apoptosis - moderate or intense | 362 | 80.1 | 294 | 78.4 |
Lymphatic invasion | 141 | 31.2 | 117 | 31.2 |
ER positive | 226 | 56.4 | 201 | 61.1 |
PR positive | 258 | 64.3 | 219 | 66.6 |