No, she did not. As stupid as I hold Rosie O’Donnell, she did not have that treatment. And that was a wise choice.
Mastectomy does not reduce breast cancer risk to zero. Breast tissue extends down the rib cage and under the arm pits towards the back. There is pretty much no way, unless extremely radical surgery is done, to remove 100% of breast tissue. If one cell is still inside the body, one can still get breast cancer. Carrying the gene does not mean that one will get breast cancer; conversely, not carrying the gene does not guarantee a breast cancer free life. In fact, I opted not to get tested for the gene. Would having it cause me unnessissary worry (stress causes many negative health issues), or not having it give me permission to skip a check here or there?
Didn’t her mother die from breast cancer?