Safety and efficacy of immediate autologous breast reconstruction after mastectomy in patients undergoing neoadjuvant chemoradiotherapy for locally advanced breast cancer

Article type: Research Article

Authors: Clement, Zackariah^{a; b;} | Egbeare, Donna^a | Kollias, Jim^a | Gill, Grantley^a | Whitfield, Robert^a | Bingham, Janne^a | Bochner, Melissa^a

Affiliations: [a] Department of Breast and Endocrine Surgery, Royal Adelaide Hospital, South Australia, Australia | [b] Department of Breast and Endocrine Surgery, The Tweed Hospital, New South Wales, Australia

Correspondence: [*] Corresponding author: Zackariah Clement, MBBS, FRACS, MS, Suite 1C, Medical Centre, John Flynn Private Hospital, 42 Inland Drive, Tugun Qld 4224, Australia. Tel.: +61 07 56481880; Fax: +61 07 56481889; E-mail: zackariah.clement@gmail.com. ORCID: http://orcid.org/0000-0002-5139-5968

Abstract: PURPOSE:Immediate autologous breast reconstruction (IABR) offers fewer surgeries with better psychosocial, quality of life and aesthetic outcomes. In high-risk patients or those with locally advanced breast cancer (LABC), adjuvant postmastectomy radiotherapy decreases local recurrence and improves survival. However, it has negative effects on the reconstructed flap. Reversing the treatment protocol using neoadjuvant radiotherapy may minimise the negative effects on the reconstructed breast in women requesting IABR. We assessed the safety and efficacy of women who underwent mastectomy and IABR post-neoadjuvant chemoradiotherapy (NACRT) for LABC. METHODOLOGY:A cohort study using a retrospective and prospective analysis was performed on women with LABC who underwent mastectomy and IABR post-NACRT between 1998 and 2018. All reconstructions were performed by oncoplastic breast surgeons from a single unit. Outcome measures analysed included surgical complications, flap failure, loco-regional recurrence, overall and disease-free survival. This study was conducted in accordance with the Declaration of Helsinki (as revised in 2013). This study was approved by the institutional review board. RESULTS:A total of 28 women with a median age of 50 (33–64) were included. 25% underwent TRAM flap and 75% underwent LD flap reconstruction. The median period of follow-up was 61 months. Post-NACRT, 35.7% achieved complete pathological response (PCR). 3/28 (10.7%) had early complications (2 implant and 1 donor site infection). 7% underwent revision surgery. There was no flap loss. 1/28 (3.5%) had loco-regional recurrence, 3.2% had distant metastasis, and 2.5% had breast cancer related mortality. CONCLUSION:In women with LABC, NACRT followed by mastectomy and IABR is safe and may not compromise oncological and cosmetic outcomes. If offers the benefits of immediate breast reconstruction and avoids delaying adjuvant therapy.

Keywords: Neoadjuvant radiotherapy, neoadjuvant chemoradiation, breast cancer, mastectomy, breast reconstruction

DOI: 10.3233/BD-210062

Journal: Breast Disease, vol. 41, no. 1, pp. 267-272, 2022