Does pre-chemotherapy extent of nodal involvement impact your decision to offer adjuvant radiation in cN1, ypN0 triple-negative breast cancer?

There are few data on this subject. The group at the Netherlands Cancer Institute in Amsterdam created what they called the "MARI" approach for such patients (Koolen et al., PMID 28524246). In brief, they performed an axillary ultrasound and marked the largest suspicious node with a radioactive seed...