Adjuvant therapies for very young women with early stage breast cancer.

Approximately 16,000-19,000 women aged ≤ 45 are diagnosed annually with breast cancer in the United States and thousands more are diagnosed worldwide. Compared to older women, young women are more likely to have cancers with aggressive tumor biology and present with higher stage disease, both of which likely lead to their worse outcomes. We review the available evidence for adjuvant systemic therapy as well as treatment considerations for younger women with breast cancer. Although we have begun to appreciate the issues that younger women with breast cancer face, we need a better understanding of how we can optimally prevent disease recurrence while carefully considering their unique physical and emotional needs with regard to diagnosis, treatment, and survivorship.