Trauma to Breast

There is a relative in our family (a retired RN) who developed breast cancer in her 70's.  She has recently implied that it was caused by our son's throwing an orange and striking her on the breast (he was 3 at the time).  She has mentioned that her doctors said something about "trauma to the breast", but is evasive about whether or not a doctor actually mentioned a relationship.  Is there any research indicating that physical trauma to the breast can either cause or exacerbate breast cancer?

[CCF-RN,MSN-JS]

Dear Jack: An injury to the breast does not lead to cancer.  Getting hit in the breasts can be painful, lead to bruising but does not lead to breast cancer.  Similarly, scar tissue that results from an injury to the breast won

[felipia]

A related discussion, injured breast was started.

[lillacey]

A related discussion, brest was started.