A high risk of breast cancer can be caused by reasons other than a hereditary syndrome.
For example, if you have a close relative – mother or sister – diagnosed with breast cancer, your risk of developing the disease is slightly bigger (2 or 3 times) than the general population. This means that you should start mammogram screenings earlier than usual.
Talk with your doctor to understand better your risk level.
Your doctor will have to know more about your familial history concerning not only breast cancer, but other cancer types, as well as any tumors in the family and other relevant clinical evidence.
Ask about the possibility of starting mammogram screenings earlier than usual (before the age of 40 or 50, depending on the country), and how often they should be done.