Inclusion Criteria:

- patients who have been referred to a breast ultrasound because of a positive physical
palpation and/or positive mammograms and/or positive ultrasound and/or positive MRI.

- female

- age 21 or older

- provide informed consent

Exclusion Criteria:

- Women who are unwilling or unable to provide informed consent

- Women with breast implants

- Women with superficial lesions or lesions on skin (with the most superficial surface
of the lesion within 5 mm of the skin surface)

- Women who are pregnant or breastfeeding

- Women who are undergoing chemotherapy or radiotherapy for any cancer

- Women with previous breast conserving surgery on the breast of interest Note:
Previous excision of a benign lesion 4 cm or more away from the suspected lesion
does not constitute an exclusion criterion.