- In Belgium, fulvestrant is indicated for treating postmenopausal women with hormone receptor-positive locally advanced or metastatic breast cancer with recurrence during or after adjuvant anti-oestrogen therapy or disease progression during anti-oestrogen treatment. However, little information is currently available on how fulvestrant is actually being used by physicians in Belgium. The optimum sequence of endocrine treatment for advanced breast cancer has yet to be defined and may depend on certain patient or disease characteristics.