1. Autologous fat transfer after breast cancer surgery: An exact-matching study on the long-term oncological safety
- Author
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Daniela Bossi, Luca Sorrentino, Annalisa Caruso, L. Regolo, Marta Truffi, Serena Mazzucchelli, Fabio Corsi, Renzo Vanna, Elisabetta Scoccia, Sara Albasini, Gianfranco Petrolo, and Carlo Morasso
- Subjects
Oncology ,medicine.medical_specialty ,Time Factors ,medicine.medical_treatment ,Mammaplasty ,Breast Neoplasms ,030230 surgery ,Transplantation, Autologous ,Disease-Free Survival ,Autologous Fat Transfer ,03 medical and health sciences ,0302 clinical medicine ,Breast cancer ,Internal medicine ,medicine ,Humans ,Mastectomy ,Retrospective Studies ,Multivariate survival analysis ,business.industry ,Incidence ,Exact matching ,General Medicine ,Luminal a ,medicine.disease ,Survival Rate ,Treatment Outcome ,Adipose Tissue ,Italy ,030220 oncology & carcinogenesis ,Cohort ,Surgery ,Female ,Neoplasm Recurrence, Local ,Breast reconstruction ,business ,Adjuvant ,Follow-Up Studies - Abstract
Introduction Autologous fat transfer (AFT) is widely adopted for breast reconstruction, but its long-term oncologic safety is still not clearly established. The aim of the present study was to compare the 10-year loco-regional recurrence (LRR)-free and distant metastases (DM)-free survival probabilities in AFT vs. control patients, also evaluating the impact of AFT in different intrinsic molecular subtypes of breast cancer. Materials and methods 464 AFT patients were exactly matched with a cohort of 3100 control patients treated between 2007 and 2017. A multivariate survival analysis was performed accounting for all variables related to LRR and DM, including adjuvant/neoadjuvant treatments. End-points were analyzed both overall and in each molecular subtype. Results LRR occurred in 6.4% of AFT and in 5.0% of control patients (p = 0.42), while DM were observed respectively in 7.7% and 5.4% of cases (p = 0.20). AFT showed no effect on the 10-year LRR-free survival probability (adjusted HR 0.87, 95%CI 0.43–1.76, p = 0.69) or the 10-year DM-free survival probability (adjusted HR 0.82, 95%CI 0.43–1.57, p = 0.55). Luminal A patients treated by AFT showed a decreased LRR-free survival probability (HR 2.38, 95%CI 0.91–6.17, Log-Rank p = 0.07), which was significantly lower than controls after 80 months (Log-Rank p = 0.02). No differences in the 10-year event-free survival probability were found in Luminal B, HER2-positive or triple-negative patients. Conclusion AFT does not increase breast cancer recurrence, with the possible exception of late LRRs for Luminal A patients, but further clinical and preclinical data are required to better clarify this data. The use of AFT should not be discouraged.
- Published
- 2019