Table 2 Radiological and histological characteristics of the 151 stereotactic vacuum-assisted breast biopsies (microbiopsy) according to the presence or the absence of cancer on excision
From: All atypia diagnosed at stereotactic vacuum-assisted breast biopsy do not need surgical excision
Characteristics at microbiopsy | No cancer (n=99), n | Cancer (n=52), n |
|---|---|---|
Radiological criteria | ||
BI-RADSa | ||
3 and 4 | 86 | 34 |
5 | 13 | 18 |
Size/extension of microcalcifications | ||
One focus≤20 mm | 48 | 16 |
One focus>20 mm or multiple focib | 51 | 36 |
Disappearance of microcalcifications after biopsy | ||
No | 67 | 35 |
Yes | 32 | 14 |
Not specified | — | 3 |
Histological criteria calcifications | ||
Number of cores (median) | ||
Without calcifications | 7 (0–23) | 6 (0–27) |
With calcifications | 8 (1–25) | 8 (0–16) |
Topography | ||
In atypia | 82 | 46 |
Out of atypia | 17 | 6 |
Atypia | ||
Types of atypia | ||
Flat epithelial atypia | 24 | – |
Atypical ductal hyperplasia | 18 | 32 |
Lobular neoplasia | 11 | 3 |
Mixed lesions | ||
Predominant flat epithelial atypia | 30 | 5 |
Predominant atypical ductal hyperplasia | 11 | 7 |
Predominant lobular neoplasia | 4 | 3 |
Flat epithelial atypia and atypical ductal hyperplasia | — | 2 |
Flat epithelial atypia and lobular neoplasia | 1 | |
Extension of atypia | ||
Number of cores with atypia (median) | 3 (1–14) | 5 (1–21) |
Percentage of cores with atypia (median) | 25 (5–100) | 41 (5–100) |
Number of foci with atypia (median) | 3 (1–14) | 6 (1–37) |
Size of the largest focus of atypia (mean size) | 3 (1–7) | 2 (1–12) |
Sum of the sizes of foci of atypia (median) | 6 (1–33) | 8 (1–60) |
