If you are believed to be at risk for a hereditary cancer syndrome, genetic testing can be helpful. It can be used to look for the gene changes linked to these syndromes.
People with this syndrome have dark moles around the mouth, nose, and eyes, as well as multiple polyps in the intestines.
A-T is a rare childhood disease that affects the nervous system and other body systems.
Breast cancer in men is rare—less than 1% of all breast cancer occurs in men.