This protocol was designed for testing the intraoperative use of the Dune device. This multicenter study will take place in Israel at 12 sites.

Use of the device will take place during a partial mastectomy procedure (lumpectomy).The patient will be randomized to enter the device or control arm.

Inclusion criteria

1. Women diagnosed with carcinoma of the breast
2. Undergoing lumpectomy (local wide excision) procedure.
3. Over 18 years of age
4. Signed ICF

Exclusion criteria

1. Neoadjuvant systemic therapy
2. Previous radiation in the operated breast
3. Prior surgical procedure in the same quadrant
4. Implants in the operated breast
5. Pregnancy
6. Participating in any other investigational study for either drug or device which can influence collection of valid data under this study.