Abstract
BACKGROUND: Given the lack of published evidence on cancer incidence trends in Mato Grosso disaggregated by health regions, this study aimed to analyze the temporal trends in cancer incidence across the health regions of Mato Grosso. METHODS: Time series study that used data from the Population-Based Cancer Registry of Mato Grosso (2001-2018) to analyze cancer incidence trends. Age-standardized incidence rates were calculated and analyzed by year, sex, health regions, and primary cancer sites. Trends were estimated using the Joinpoint regression method, evaluating annual percentage changes (APC) and the average annual percentage change (AAPC) with a confidence interval of 95.0%. RESULTS: Among men, an increasing trend was observed for prostate cancer in the state (APC: 2.6) from 2001 to 2013, as well as in the Baixada Cuiabana (AAPC: 3.5) and Middle North (APC: 5.5) regions from 2001 to 2015, having oscillated in three other regions and decreasing for lung cancer in the state (APC: -4.2) during 2001-2009 and 2012-2018, in Baixada Cuiabana (AAPC: -2.4), and Garças Araguaia (AAPC: -3.8), and cancers of the oral cavity (AAPC: -2.3) and stomach (AAPC: -3.5) in the state. Among women, a decreasing trend was observed for cervical cancer (AAPC: -6.8) both in the state and in all regions reporting cases. A decreasing trend was also noted for breast cancer in the state (APC: -3.6) from 2001 to 2009, with an increasing trend in the Southwest (AAPC: 5.8) and Araguaia Xingu (AAPC: 5.8) regions. Lung cancer showed a decreasing trend in the state (APC: -2.7) from 2001 to 2009, while thyroid cancer exhibited an increasing trend (AAPC: 6.7). CONCLUSION: By providing detailed information on cancer incidence trends by health region, this study underscores the need for region-specific interventions tailored to the unique magnitude of the cancer burden in each area.