[donocco]

I looked this p in Pub Med. There was an article in Ther Adv Med Oncology June 18 2018
that addressed this question. The conclusion was that extended Anti-Hormonal therapy with either Tamoxifen or Arimidex (pre-menopausal vs post menopausal) seemed to be more efficacious although no firm conclusions were drawn. It seems they were thinking about late relapses after five years. You have to consider side effects etc so each patient is individual. The conclusion suggested was a general one, not set in stone. Hope this helps.

Paul