Editorial supplement: the best scientific papers in 2020

Dear friends, 2020 was a challenging year for everyone.We were unexpectedly affected by the COVID-19 pandemic, which caused major impacts around the world.Therefore, the 23 rd edition of the Brazilian Congress of Mastology, which would be held in Florianópolis, had to be postponed considering the audience's safety.We were sorry for not being to provide, at that moment, to more than one thousand confirmed attendees, the content that had been built with the effort of experts from different regions of our country.A lot of work has been done to elaborate a special and productive scientific schedule; besides, we also had focused on your stay in Florianópolis being a pleasant experience.During the pandemic, we were apart from friends, family members, and had to deal with the challenge of treating our patients in a chaotic scenario.Many have lost their beloved ones, and others were victims of the new Coronavirus themselves.The moment called for supportive union, and all efforts were addressed to fight the consequences of the pandemic.Still, the Organizing Committee remained together and worked to make sure the structure of the event scheduled for 2021 could be peaceful.We were able to maintain almost all of