Breast cancers that are lymph node-positive are usually treated with chemotherapy before surgery (neoadjuvant chemotherapy). If those cancers become lymph node-negative after neoadjuvant chemotherapy, there’s been a debate about whether to treat the nodes or not.

A new study has practicing-changing results: Nodal radiation isn’t need.

Dr. Marisa Weiss, Breastcancer.org chief medical officer and founder, and radiation oncologist, explains the findings.

Listen to the podcast to hear Dr. Weiss explain: