early-stage breast cancer

Definition of early-stage breast cancer
National Cancer Institute

early-stage breast cancer

(ER-lee-stayj brest KAN-ser)
Breast cancer that has not spread beyond the breast or the axillary lymph nodes. This includes ductal carcinoma in situ and stage I, stage IIA, stage IIB, and stage IIIA breast cancers.

Source: NCI Dictionary of Cancer Terms