Abstract INTRODUCTION Peruvian health system was severely impacted by COVID-19 pandemic. Public hospitals were saturated by patients with COVID-19 rapidly. Many patients had to seek medical attention for other health conditions in private institutions. This situation was also observed in pediatric patients with brain tumors. The objective of the present study was to describe clinical and neuroimaging characteristics from pediatric patients diagnosed with brain tumors in two private institutions fron Lima-Peru during COVID-19 pandemic. METHODS Descriptive study of cases of brain tumor in patients aged less than 18 years observed in two private institutions from Lima-Peru from March 2020 to December 2021. RESULTS Six consecutive cases of intracranial tumors were detected during a large part of COVID-19 pandemic's first year (October 2020 to March 2021), all of them with diagnosis of primary intracranial sarcoma . Before the pandemic, the last primary intracranial sarcoma in children operated occurred in June 2018, and was the only case that year. CONCLUSION The present study found an unusual frequency of primary intracranial sarcoma in children in two private institutions from Lima-Peru during COVID-19 pandemic.