| Specifications | Nombre | Pourcentage |
| Coagulation test |
| |
| Yes (Platelets) | 6 | 11.1 |
| None | 48 | 88.9 |
| Needle Gauge |
| |
| 14 G | 11 | 20.4 |
| 16 G | 24 | 44.4 |
| 18 G | 19 | 35.2 |
| Type of materiel used for biopsy |
| |
| BARD automatic gun | 44 | 81.5 |
| Semi-automatic needle | 10 | 18.5 |
| Duration of the biopsy act |
| |
| Less than 30 minutes | 51 | 94.4 |
| More than 30 minutes | 3 | 5.6 |
| Complication |
| |
| Immediat complications | 2 | 3.7 |
| Late complications | 3 | 5.6 |
| Number of specimens |
| |
| 3 specimens | 23 | 42.5 |
| 4 specimens | 30 | 55.6 |
| 6 specimens | 1 | 1.9 |
| Histology on ultrasound-guided biopsy specimens |
| |
| Adenofibroma | 6 | 11.1 |
| Fibro-cystic dysplasia | 8 | 14.8 |
| Invasif ductal carcinoma | 33 | 61.1 |
| In situ ductal carcinoma | 5 | 9.3 |
| Others* | 2 | 3.7 |