Autologous fat grafting (AFG), or lipofilling, has been used for immediate reconstruction at the time of breast-conserving surgery in order to achieve a satisfactory cosmetic outcome in patients with breast cancer and an unfavorable tumor-to-breast volume ratio or unfavorable tumor location. However, the oncologic safety of this technique is still unclear.
To determine whether AFG performed simultaneously with breast-conserving surgery is associated with differences in local relapse rates and disease-free survival.
Matched retrospective cohort study.
Tertiary referral center.
Patients undergoing breast-conserving surgery with or without AFG between 2004 and 2016 were retrospectively enrolled and matched for age, staging, grade, tumor histology, and tumor immunohistochemical profile.
Main outcome(s) and measure(s)
The cumulative incidence of locoregional recurrence (LRR) and disease-free survival were the primary end points, while distant recurrence and overall survival were the secondary end points.
A total of 320 patients were followed. Cases were matched with controls at a 1:4 ratio. There was no difference in LRR or distant recurrence of breast cancer between the two groups. The annual LRR rate was 0.86% in patients who received immediate AFG vs. 0.7% in patients undergoing breast-conserving surgery alone (p ≥ 0.05). Number of lymph nodes was the sole independent risk factor for local recurrence (p = 0.045). No significant differences in disease-free survival rates were found between the groups.
Conclusions and relevance
At a mean follow-up of 5 years, no significant differences in locoregional recurrence rates were found between patients who received immediate AFG and those who underwent breast-conserving surgery alone. These findings corroborate previous research demonstrating the oncological safety of immediate AFG reconstruction, further suggesting that this technique as a safe, effective way to achieve optimal cosmetic outcomes in primary breast cancer surgery without jeopardizing oncologic outcomes.
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The authors have no conflicts of interest to disclose. Camile Cesa Stumpf had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
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Stumpf, C.C., Zucatto, Â.E., Cavalheiro, J.A.C. et al. Oncologic safety of immediate autologous fat grafting for reconstruction in breast-conserving surgery. Breast Cancer Res Treat (2020). https://doi.org/10.1007/s10549-020-05554-0
- Autologous fat grafting
- Breast conservative surgery
- Immediate breast reconstruction
- Breast cancer