Radiation Therapy Without Hormone Therapy for Women Age 70 or Above with Low-Risk Early Breast Cancer: A Microsimulation

Hormone therapy without radiation therapy is considered appropriate for women age 70 or above with low-risk, hormone-positive breast cancer after partial mastectomy. However, some patients may prefer radiation without hormone therapy, for which there is minimal modern data. We modeled the comparative efficacy of aromatase inhibition alone without radiation versus radiation alone without hormone therapy.