Annals of Surgical Oncology

, Volume 20, Issue 11, pp 3469–3476 | Cite as

Breast-Conserving Therapy Achieves Locoregional Outcomes Comparable to Mastectomy in Women with T1-2N0 Triple-Negative Breast Cancer

  • Zachary S. Zumsteg
  • Monica Morrow
  • Brittany Arnold
  • Junting Zheng
  • Zhigang Zhang
  • Mark Robson
  • Tiffany Traina
  • Beryl McCormick
  • Simon Powell
  • Alice Y. HoEmail author
Breast Oncology



Conflicting data exist regarding optimum local therapy for early-stage triple-negative breast cancer (TNBC). We examined outcomes according to local treatment type in a large cohort of node-negative TNBC patients.


A total of 1,242 consecutive patients with TNBC treated at a single institution from 1999 to 2008 were identified. Of these, 646 with pathologic stage T1-2N0 TNBC underwent breast-conserving therapy (BCT) (N = 448) or total mastectomy (TM) without postmastectomy radiation (N = 198) and comprised the study population. Locoregional recurrence (LRR), distant metastasis (DM), and overall recurrence were investigated with a competing risk analysis using Gray’s test and multivariable Fine and Gray competing risk regression. Overall survival was assessed using standard Kaplan–Meier methods and a Cox proportional hazards analysis.


Median follow-up was 78.3 months (range 1–156). Eight-one percent of patients received adjuvant chemotherapy. TM patients were younger, were more likely to have lymphovascular invasion, and had larger tumors than patients undergoing BCT (all P ≤ 0.05). The 5-year cumulative incidence of LRR was 4.2 and 5.4 % for patients undergoing BCT and TM, respectively. There was no significant difference in LRR, DM, overall recurrence, disease free survival, or overall survival between groups on univariate analysis, or after adjusting for other variables in multivariate models. Lack of chemotherapy and high tumor stage independently predicted for decreased overall survival (both P < 0.001).


A low, 5-year risk of LRR (4.7 %) was achieved in a large group of women with T1-2N0 TNBC treated with multimodality therapy. BCT was as equally effective as TM for local and distant control.


BRCA Mutation Locoregional Control Total Mastectomy TNBC Patient Cumulative Incidence Rate 
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Copyright information

© Society of Surgical Oncology 2013

Authors and Affiliations

  • Zachary S. Zumsteg
    • 1
  • Monica Morrow
    • 2
  • Brittany Arnold
    • 1
  • Junting Zheng
    • 3
  • Zhigang Zhang
    • 3
  • Mark Robson
    • 4
  • Tiffany Traina
    • 4
  • Beryl McCormick
    • 1
  • Simon Powell
    • 1
  • Alice Y. Ho
    • 1
    Email author
  1. 1.Department of Radiation OncologyMemorial Sloan-Kettering Cancer CenterNew YorkUSA
  2. 2.Department of SurgeryMemorial Sloan-Kettering Cancer CenterNew YorkUSA
  3. 3.Department of Epidemiology-BiostatisticsMemorial Sloan-Kettering Cancer CenterNew YorkUSA
  4. 4.Department of MedicineMemorial Sloan-Kettering Cancer CenterNew YorkUSA

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