This study will compare patients' relative arm volume changes and symptoms data from before drug therapy throughout drug treatment and for up to six months after treatment has finished.~A Perometer and Sozo device will be used to measure volume changes~All participants will be accrued at Massachusetts General Hospital for a target accrual of 142 participants
This a prospective, longitudinal study designed to track edema and Breast Cancer Related Lymphedema (BCRL) onset in breast cancer patients taking targeted therapy treatments for early and metastatic breast cancer.~A Perometer and Sozo devise will be used to measure volume changes