How is stage I, IIA, IIB, or IIIA (T3N1M0) breast cancer treated?

Updated: Apr 23, 2020
  • Author: Joseph A Sparano, MD; Chief Editor: John V Kiluk, MD, FACS  more...
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Treatment for these stages of breast cancer include the following:

  • Surgery
  • RT in most cases
  • Adjuvant chemotherapy, endocrine therapy, or biologic therapy in some cases

Surgical options include the following:

  • Lumpectomy to negative margins, plus RT or
  • Mastectomy or
  • Mastectomy with reconstruction

Axillary assessment is usually performed with SNB. Axillary dissection may be considered in cases of node-positive breast cancer.

RT is used in patients who undergo lumpectomy or, in selected cases, after mastectomy; treatment fields are determined by axillary node status. RT should follow chemotherapy if chemotherapy is indicated.

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