A member asked:

Do great-aunts having breast cancer affect risk for this disease?or is it only first-degree relatives, (mom, sister, daughter)? 2 great aunts had it.

9 doctors weighed in across 2 answers
Dr. Carlos Encarnacion answered

Specializes in Medical Oncology

Depends: First degree relatives have more "punch" when talking about cancer risk but it depends greatly on the composition and the size of the family. Also depends on the ages at which the patients developed cancer and whether there are other types of cancer in the family. Talk to your gyn or pcp, maybe you need to see a professional with expertise in cancer genetics and risk assessment.

Answered 10/4/2016

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Very minimally: Having a first degree relative with breast cancer will increase the risk of a women getting breast cancer in their lifetime approximately 5% over the average population risk, which is 12%. So, in a woman your age, having a first degree relative with breast cancer would increase the risk to approximately 17%. Having great aunts with breast cancer would increase the risk slightly, perhaps to 13%.

Answered 5/10/2014

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