Stage 3a Breast Cancer

Hello Dr.

Iam a twin both my sister and I were diagnoed with
breast cancer, I was stage 0, my sister 3A, is it too much in asking her oncologist to remove her ovaries, she is estrogen receptor postive.We want to everything in
our power to prevent reoccurance.
Thank you,

[allmymarbles]

Removing the ovaries does not improve the prognosis.