Unlocking delays: revealing barriers to early diagnosis of childhood central nervous system tumors in an upper-middle-income country.

Purpose: Childhood central nervous system (CNS) tumors tend to have a longer time interval until diagnosis than other pediatric malignancies. The aim is to describe the time to diagnosis among Brazilian pediatric patients treated at a tertiary center and explore associated factors.

Methods: Cross-sectional study; application of questionnaires to parents of children with CNS tumors during outpatient visit or inpatient care.