Inclusion Criteria:

- Patients must have a breast lesion/mass found at physical examination, mammography or
ultrasound (US), that has not been surgically resected

- Patients may have any of the following characteristics:

- Taking hormones (e.g., contraceptives, hormone replacement therapy, post-cancer
Tamoxifen)

- Breast implants

- Previous breast biopsy

- Previous breast surgery

- Previous breast cancer

- High risk of breast cancer (e.g., breast cancer susceptibility gene (BRCA)
mutations, other gynecologic cancer)

- Ability to understand and the willingness to sign a written informed consent document

Exclusion Criteria:

- Patients who have had primary surgical excision of the suspicious finding

- Pregnant or lactating women