Breast cancer – a rare, but possible diagnosis for men Although breast cancer in men is rare, it does happen. In the United States, about one percent of all breast cancers occur in men. Learn more now.
What is genetic testing for breast cancer and who should get it? Most breast cancers are not related to genes or family history. In fact, only five to 10 percent of all breast cancers diagnosed in the U.S. are thought to be hereditary. Learn More.