Originally Posted by JEY100

Answer depends on type of breast cancer, other treatments completed, metastasis, etc. But a common form (75% ? Or so) is ER+ or Estrogen Receptor Positive, PR + or Progesterone Receptor positive so the doctor removes this organ with estrogen which can stimulate more cancers if metastatic, or in ovary itself. More women choose surgical removal because hormonal suppression of the ovary is the pits (injections). If post-menopausal, or an ER negative cancer, HER2 status, the invasive Triple Negative type, different hormonal treatments are used.