Introduction: Thyroid cancer is the most common type of endocrine neoplasm and generally has a favorable prognosis. However, mortality rates can vary across Brazilian regions, reflecting disparities in access to early diagnosis and appropriate treatment. Analyzing confirmed cases and deaths allows for the identification of regional disparities and weaknesses in healthcare systems. Objective: To conduct a comparative analysis of confirmed cases and mortality due to thyroid cancer in the Northern Region of Brazil, based on the disease’s epidemiological profile. Methods: This is a descriptive, cross-sectional and quantitative epidemiological study based on secondary data obtained from the Informatics Department of the SUS (DATASUS) and the Oncology Brazil Panel. Records of confirmed cases and deaths from thyroid cancer were analyzed in the seven states of the Northern Region between 2013 and 2023. Data were organized and analyzed using Microsoft Office Excel 2019, with calculation of the proportional mortality rate by state. Results: From 2013 to 2023, a total of 1,611 cases of thyroid cancer were reported in the Northern Region. The state of Amazonas accounted for the highest proportion of cases (40.9%), followed by Pará (36.6%). The lowest numbers were observed in Amapá (1.4%) and Acre (1.8%). The majority of cases occurred in females (82.4%), consistent with the higher prevalence of the disease in women. The most affected age groups were 40–44 years (11.8%) and 45–49 years (12.5%). In the same period, 618 deaths from thyroid cancer were recorded. Pará registered the highest number of deaths (48.4%), followed by Amazonas (23.8%), while Acre (4.2%) and Amapá (2.4%) reported the fewest. Although most deaths occurred in women (65.0%), the sex ratio (M:F = 1:1.86) indicates relatively higher mortality among men. Most deaths were concentrated in older age groups, particularly in the 60–69 (23.1%), 70–79 (24.3%), and 80+ (21.0%) age groups. The proportional mortality rate (deaths/cases) varied notably among states. Pará had the highest rate (50.7%), exceeding the regional average of 38.3%. Conversely, Rondônia (21,5%) and Amapá (26,3%) had the lowest rates, possibly reflecting disparities in access to timely diagnosis and treatment, or limitations in data quality and reporting. Conclusion: The comparative analysis revealed significant regional disparities in thyroid cancer mortality across Northern Brazil. Pará exhibited the highest proportional mortality rate, indicating potential gaps in diagnosis, treatment, or healthcare infrastructure. Although incidence was higher in women, men showed greater proportional lethality. Mortality rates increased progressively with age, emphasizing the need for age-targeted screening strategies. These findings emphasize the urgency for implementing public policies aimed at ensuring equitable cancer care and strengthening the specialized oncology network throughout the Northern Region.
It is with great enthusiasm that we present the Annals of the Oncology International Symposium 2025, an event that continues to solidify its significance in the oncology landscape of northern Brazil. Held in Belém, Pará, Oncology 2025 centered around the theme "The cancer control challenge: better knowing it to best facing it," dedicating itself to exploring the latest frontiers in cancer treatment and prevention.
This year, the symposium provided a deep dive into the essential role of knowledge in the fight against cancer, presenting new perspectives and scientific advancements across various areas of oncology. Renowned global experts gathered to share their most recent research and innovative approaches, offering participants a comprehensive view of the challenges faced by healthcare professionals and patients worldwide.
Presentations and discussions during the event focused on critical topics such as the use of new technologies, advancements in personalized therapies, and more effective prevention strategies. Additionally, particular attention was given to the unique challenges faced by the Amazon region, with efforts aimed at developing region-specific solutions to meet local needs.
Beyond being a high-caliber academic event, Oncology 2025 stood out as a moment for integration and professional networking, with the warm hospitality of the city of Belém offering participants a unique experience. This event became a platform for exchanging ideas, where science, culture, and humanity came together in pursuit of a common goal: to improve cancer control both in Brazil and globally.
This collection of abstracts and articles presented during the event reflects the ongoing dedication to research and the development of innovative solutions, highlighting the importance of collaboration and shared knowledge in the fight against cancer.
General Submission Guidelines:
The presenting author, who does not have to be the first author, must be registered for Oncology 2025.
Each abstract may have up to 10 authors, including the main author and co-authors.
Only original, unpublished work will be accepted.
Submissions must be related to oncology. However, project descriptions, work proposals, experience reports, and literature reviews will not be considered.
Clinical case reports are allowed, provided the abstract addresses scientific questions, details clinical observations, and includes primary scientific data.
The abstract must be written in English, but presentations may be given in Portuguese.
Abstracts must be between 300 and 500 words.
Comissão Organizadora
Comissão Científica
See Annals of Oncology 2023 at:
https://www.even3.com.br/anais/oncology-2023-international-symposium/
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