Table 1.
Pathological results of ultrasonographic-guided vacuum-assisted breast biopsy in 2,920 lesions
| Finding | No. of lesions |
|---|---|
| Benign | 2,302 |
| Fibroadenoma | 919 |
| Fibrocystic change | 558 |
| Fibroadenomatous hyperplasia | 379 |
| Adenosis | 166 |
| Fibrosis | 114 |
| Ductal epithelial hyperplasia | 81 |
| Columnar cell change | 35 |
| Inflammation | 5 |
| Othersa) | 45 |
| High-risk | 460 |
| Atypical ductal hyperplasia | 30 |
| Non-atypical ductal hyperplasia | 430 |
| Papillary lesion | 355 |
| Phyllodes tumor | 53 |
| Mucocele-like lesion | 15 |
| Radial scar | 7 |
| Malignant | 158 |
| Ductal carcinoma in situ | 122 |
| Invasive cancer | 36 |
| Invasive ductal carcinoma | 28 |
| Invasive lobular carcinoma | 2 |
| Mucinous carcinoma | 1 |
| Tubular carcinoma | 1 |
| Neuroendocrine carcinoma | 1 |
| Leukemia | 1 |
| Metastasis to breast | 2 |
a)
Others included inflammation, diabetes mastopathy, epidermal cyst, galactocele, hamartoma, lobular hyperplasia, and xanthogranulomatous mastitis.