Trends in contralateral breast cancer and contralateral prophylactic mastectomy from 2009 to 2016
摘要
This study characterizes trends in contralateral breast cancer (CBC) and contralateral prophylactic mastectomy (CPM) in Ontario, Canada, by breast cancer risk level. Overall, there has been a decline in CBC rates and the concomitant rise in CPM rates after unilateral breast cancer diagnosis, largely driven by high-risk individuals. Considerations for breast cancer risk level are recommended in evaluations of CBC and CPM trends.