Racial Disparities in Endometrial Cancer Incidence and Outcomes in Brazil: Insights From Population-Based Registries.

Abstract

Purpose: This study aimed to examine trends in the incidence and mortality rates of endometrial cancer (EC) across ethnic groups in Brazil and to analyze the demographic and clinicopathological characteristics associated with these trends.

Methods: The incidence of EC was analyzed from 2010 to 2015 using data from Brazilian Population-Based Cancer Registries (PBCRs), including crude rates and annual percentage changes (APCs). Clinical and sociodemographic information from 2000 to 2019 was gathered from Hospital-Based Cancer Registries. Mortality data between 2000 and 2021 were obtained from the National Mortality Information System, allowing for comparisons between White women and Black women.

Results: From 2010 to 2015, a total of 32,831 new cases of EC were reported across 13 PBCRs, with Black patients accounting for 35.7% of these cases. The median age at diagnosis was 63 years, with Black women diagnosed at a younger age than White women. Black patients experienced a significant increase in incidence rate (APC +6.7% v +3.0%). A greater proportion of Black patients lived without partners (54.0%), had higher rates of alcohol consumption (15%) and smoking (25.8%), and resided in less developed regions (54.6%) with lower education levels (77.5%). From 2000 to 2021, Brazil recorded 72,189 EC-related deaths, showing higher mortality rates among White women (3.8 per 100,000) than Black women (2.4 per 100,000), although the downward trend was steeper among White women (-1.2%) than Black women (-0.6%).

Conclusion: Racial disparities in EC incidence and mortality in Brazil may be closely linked to unfavorable sociodemographic factors faced by Black women. Targeted public health initiatives are critical for improving early detection and access to equitable care for Black women.