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[Diagnosis and Treatment of HBOC Syndrome by a Breast Surgical Oncologist]
Kumiko Kida1, Michiko Murai, Hideko Yamauchi
1Dept. of Breast Surgical Oncology, St. Luke's International Hospital.
Abstract:
Of all breast cancer cases, 5-10% occur because of inherited germline mutation. For hereditary breast and ovarian cancer (HBOC)syndrome, congenital knowledge and strategies for breast cancer treatment and risk reduction are necessary. Regarding the surgical procedure for the cancer site, the ipsilateral breast tumor recurrence rate following breast-conserving surgery in breast cancers with BRCA1/2 mutation is not significantly higher than that in sporadic breast cancers. In addition, prognosis did not differ according to surgical methods. Therefore, breast-conserving surgery for HBOC is not an absolute contraindication, although the risk of developing new primary tumors in the long term should be carefully considered. For the contralateral breast, 3 choices are available, surveillance, chemo-prevention, and risk-reducing mastectomy. Risk-reducing mastectomy is known to decrease the risk of breast cancer by 90%. Genetic counseling is essential for decision making in HBOC treatment. In this review, we reevaluated the current evidence for surgical decision making and systemic therapies for HBOC syndrome.
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