85% Breast CA: no FH: According to my sources 85% of new breast ca cases have no prior family history. The data states a lifetime risk of somewhere between 1 out of 8-10 (10-12.5%) women in various studies with most occurring post-menopausal. One family member will increase the risk but negligibly over normal stats. It takes two first degree relatives to increase the risk to 25%. Genetic testing is another option.
Answered 10/4/2016
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Yes: Breast cancer is a common malignancy in women so yes, it is possible for you as for any other woman to get it. As to the effect on your risk brought by your aunt's cancer, it depends. How old was she when she had it? Any other family members with cancer? Your risk depends on many personal and family factors. Talk to your doc and see if you need to see a specialist on risk assessment. Best 2u.
Answered 10/4/2016
4.9k views
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