preferred_name: Clinically node negative (t1n0m0 or t2n0m0) invasive breast cancer before or after neoadjuvant systemic therapy
preferred_name_lc: clinically node negative (t1n0m0 or t2n0m0) invasive breast cancer before or after neoadjuvant systemic therapy
label: Node neg pre/post syst ther
label_lc: node neg pre/post syst ther