Scholars and guidelines have advocated for the routine implementation of early lymphedema surveillance and intervention after breast cancer treatment. Regular clinic visits to monitor extracellular fluid present an opportunity for therapists to provide risk management education, psychological support, physical rehabilitation, empowerment, and survivorship care. The findings from the current study support the use of BIS as part of an early prospective surveillance model of care that results in significantly earlier detection of lymphedema over time. Furthermore, the earlier detection of lymphedema will lead to lower health care costs if it results in the effective management of symptoms and prevents progression to severe clinical lymphedema. Open access: Yes View