Inclusion Criteria for Individuals on Hormone Therapy:
- Males 40-75 years of age with a history of ≥9 months of estrogen and/or progesterone hormone therapy.
- Females 40-75 years of age with any history of testosterone hormone therapy, with or without cosmetic mastectomy, but have not undergone complete mastectomy.
- Persons who have undergone breast cancer screening before can participate.
- Individuals who meet criteria for above eligibility and are ≥30-39 years of age with a 1st or 2nd degree family member with breast cancer.
- Ability to speak, read, and write in English.
- Ability to understand a written informed consent document, and the willingness to sign it.
Inclusion Criteria for Breast Radiology Faculty:
- Board-certified radiologist that specializes in breast imaging and are an actively employed faculty member at Froedtert & the Medical College of Wisconsin (main campus location).
- Part of the breast radiology faculty who read both ABUS and MMG of the study participants.
- Ability to speak, read, and write in English.
- Ability to understand a written informed consent document, and the willingness to sign it.
Inclusion Criteria for Breast Radiology Staff:
- Must be either a technician, nurse, or clerical staff that works with the breast radiology team at Froedtert & the Medical College of Wisconsin (main campus location).
- Ability to understand a written informed consent document, and the willingness to sign it.
- Ability to speak, read, and write in English.
Exclusion Criteria for Individuals on Hormone Therapy
- Females who have undergone or planned to undergo a complete mastectomy.
- Females who are post-menopausal on estrogen +/- progesterone hormone therapy since it is a well-established risk for breast cancer).
- A personal history of breast cancer or a known pathogenic gene mutation that increases the risk of breast cancer development (e.g., BRCA1/2, etc.) given that well-defined surveillance and screening recommendations exist for these persons.
Exclusion Criteria for Breast Radiology Faculty
- Not a board-certified radiologist.
- Does not specialize in breast imaging.
- Does not read ABUS and MMG and/or has not read imaging for study participants.
Exclusion for Breast Radiology Staff
1. Does not work with the breast radiology team.