A Case of Hereditary Breast and Ovarian Cancer Syndrome Leading to Metachronous Breast Cancer Manifestation on the Opposite Side 30 Years Later

Abstract

From April 2020, insurance coverage for hereditary breast and ovarian cancer (HBOC) medical care has been expanded, thus insuring for risk-reducing mastectomy. Some reports have suggested that risk-reducing surgery suppresses more than 90% of the onset of new breast cancer and improves the prognosis.

Here, we report the treatment of a patient with right breast cancer who underwent surgery for left breast cancer 30 years before. During the course of treatment, the patient was found to be BRCA2 positive and was diagnosed with HBOC syndrome. This was a suggestive case and is important to be reported.