Abstract
Background
Contralateral risk-reducing mastectomy (CRRM) for breast cancer patients with BRCA mutations has been reported to not only reduce breast cancer incidence but also to improve survival. The National Comprehensive Cancer Network guidelines recommend providing CRRM to women with BRCA mutations who desire CRRM after risk-reduction counseling. However, in Japan, CRRM cannot be performed generally because it is not covered by health insurance. Thus, we conducted a feasibility study to confirm the safety of CRRM.
Methods
CRRM with bilateral breast reconstructions were performed for breast cancer patients with BRCA mutations. The primary endpoint was early adverse events within 3 months, and secondary endpoints were late adverse events.
Results
Between August 2014 and November 2016, ten patients were enrolled. The median age was 37.5 years, and five of the patients had the BRCA1 mutation while five had the BRCA2 mutation. Six patients received neoadjuvant chemotherapy. Eight patients selected silicone breast implants, and two patients selected transverse rectus abdominis myocutaneous flap reconstruction. Pathological findings showed no evidence of occult breast cancers in any of the patients. At a median of 25.5 months follow-up time, CRRM-related early adverse events were hematoma (subsequently removed by re-operation; grade 2, n = 1), wound infection (grade 2, n = 1), skin ulceration (grade 1, n = 2) and wound pain (grade 1, n = 1). Overall, there were no grade 3 or more severe adverse events.
Conclusion
Our results confirm that CRRM with reconstruction could be performed safely.
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Abbreviations
- SBI:
-
Silicone breast implant
- LD:
-
Latissimus dorsi muscle transfer flap
- TRAM:
-
Transverse rectus abdominis myocutaneous flap
- TE:
-
Tissue expander
- CRRM:
-
Contralateral risk-reducing mastectomy
- RRSO:
-
Risk-reducing salpingo-oophorectomy
- Bt:
-
Total mastectomy
- SSM:
-
Skin sparing mastectomy
- NSM:
-
Nipple sparing mastectomy
- SLNB:
-
Sentinel lymph node biopsy
- Ax:
-
Axillary lymph node dissection
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We thank all the patients and investigators who participated in this study.
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Yoshimura, A., Okumura, S., Sawaki, M. et al. Feasibility study of contralateral risk-reducing mastectomy with breast reconstruction for breast cancer patients with BRCA mutations in Japan. Breast Cancer 25, 539–546 (2018). https://doi.org/10.1007/s12282-018-0850-z
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DOI: https://doi.org/10.1007/s12282-018-0850-z