Trends and survival benefits of bilateral breast-conserving surgery in patients with metachronous bilateral breast cancer

Despite the initial high utilization of BCS in MBBC patients, our study revealed a decline in its usage over the course of the study period. Importantly, this decrease did not impact OS, suggesting the safety of BCS for MBBC patients. In light of these findings, clinicians are encouraged to recommend BCS for eligible MBBC patients, emphasizing its viability as a treatment option.