A Department of Veterans Affairs memo obtained by ProPublica erects new roadblocks to care for veterans with the rare but deadly cancer. The agency cites no new science but relies on an executive order about “restoring biological truth” in government.
From what I could find, gynecomastia (the medical term for breasts on amab people) is not required for breast cancer. Therefor any human can develop breast cancer, as long as they are born with mammary glands, which is essential everyone.
Gynecomastia is linked with an increased chance of breast cancer in males though.