Due to the fear of transmission of the new coronavirus disease 2019 (COVID-19), many cancer patients have had their diagnosis and treatment affected. 1 Specifically, the rapid spread of the virus has led to a global impact on elective surgical procedures, including cancer centers. 2 Effects of these changes are uncertain, as is the safety of electively operating on patients while the risk of postoperative COVID-19 pneumonia remains unknown. 3 This becomes even more challenging with cancer patients, since delaying their treatment for long periods of time due to the pandemic may worsen prognosis. To prevent both cancer mortality, as well as mortality due to COVID-19, operational efficiency, quick and shared decisions, as well as predictability, are needed. Measures to reduce the circulation of individuals in hospitals and unique attention to patients according to regional and local contagion phases are critical for adequate risk management. It becomes essential to have a plan in place to be able to safely treat patients during the current pandemic. We demonstrate how a cancer center in the largest city in Brazil has managed to maintain the safe treatment of breast cancer patients during the COVID-19 pandemic. This is a retrospective cohort trend study of 
This study was approved by the appropriate institutional 