Abstract
Background
Inflammatory breast cancer (IBC) represents a rare (2–3 %) but aggressive subset of breast cancer with a historically reported 5-year overall survival rate of 50 % and a 3-year local-regional recurrence (LRR) rate of 20 %. This study aimed to evaluate long-term LRR in a contemporary cohort of non-metastatic IBC patients undergoing trimodal therapy at a single institution and identify factors associated with local and distant failure.
Methods
The study identified 262 patients with non-metastatic IBC who received trimodal therapy (neoadjuvant chemotherapy, modified radical mastectomy, adjuvant radiation) from an institutional prospective database (2007–2019). Long-term outcomes of local-regional and distant metastasis were reported. Survival outcomes were analyzed using the Cox proportional hazards regression model.
Results
The median age at diagnosis was 52 years, and the median follow-up period was 5.1 years. In this cohort, 82 (31.3 %) patients achieved a pathologic complete response (pCR) in the breast and axilla. Local-regional recurrence was observed in 18 (6.9 %) patients (11 isolated to the chest wall, 4 isolated to regional nodes, and 3 involving chest wall and ipsilateral axillary nodes). Distant metastasis was observed in 92 (35.1 %) patients. During the follow-up period, 90 deaths occurred. In the multivariate analysis, pCR was associated with improved disease-free survival (hazard ratio [HR], 0.26; 95 % confidence interval [CI], 0.13–0.51; p = 0.001) and overall survival (HR, 0.31; 95 % CI, 0.15–0.65; p = 002).
Conclusions
During a median follow-up period longer than 5 years, the local-regional relapse rate for the IBC patients treated with contemporary trimodal therapy was 6.9%, similar to that for the non-IBC patients. After chemotherapy, surgical resection with modified radical mastectomy to negative margins and postmastectomy radiation therapy resulted in excellent long-term local-regional control.
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Acknowledgment
The institutional database is supported by Morgan Welch Inflammatory Breast Cancer Research Program, and a State of Texas Rare and Aggressive Breast Cancer Research Program Grant.
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Wendy Woodward is a consultant for Exact Sciences/Genomic Health and Epic Sciences. The remaining authors have no conflicts of interest.
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Adesoye, T., Everidge, S., Chen, J. et al. Low Rates of Local-Regional Recurrence Among Inflammatory Breast Cancer Patients After Contemporary Trimodal Therapy. Ann Surg Oncol 30, 6232–6240 (2023). https://doi.org/10.1245/s10434-023-13906-5
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DOI: https://doi.org/10.1245/s10434-023-13906-5