Introduction: Stomach cancer, or gastric cancer, is a malignant neoplasm characterized by the abnormal proliferation of cells in the stomach. It is considered a multifactorial disease, with genetic predisposition, demographic characteristics, unbalanced diets, and infection by Helicobacter pylori being significant risk factors for its development. Gastric cancer is a major public health concern and ranks among the top five primary locations of malignant neoplasms in terms of incidence and mortality worldwide, with the majority of cases occurring in developing countries. In Brazil, the regional distribution of this disease reveals notable disparities. Objective: To analyze the temporal and epidemiological trends of mortality due to malignant neoplasm of the stomach in Brazil between the years 2010 and 2021. Methods: This is a retrospective, descriptive, and quantitative study based on data provided by SIM, available on the DATASUS platform. The analyzed information refers to deaths caused by malignant neoplasm of the stomach in Brazil from January 2010 to December 2021. The variables analyzed were: age group, year, and region. Data were organized in Excel tables, and the graphs were generated using the R Studio software version 4.1.1 with the "Forecast" package. Results: A total of 169,864 deaths from malignant neoplasm of the stomach were recorded in Brazil from 2010 to 2021. The highest prevalence occurred in 2019, with 15,111 deaths (8.9%), while the lowest was in 2011, with 13,328 deaths (7.84%). Regarding the spatial distribution of deaths, the Southeast region had the highest concentration with 78,259 cases (46.07%), followed by the Northeast with 38,988 deaths (23%) and the South with 29,367 deaths (18%). In terms of age groups, the most affected was 70 to 79 years with 44,620 deaths (26.26%), followed by 60 to 69 years – 43,088 (25.36%), 80 years and over – 33,180 (19.53%), and 50 to 59 years – 28,982 (17.06%). The time series analysis showed an upward trend until early 2020, with growth periods between 2011 and 2014, stability between 2015 and 2016, a drop in cases in 2017, and then an exponential increase until 2020. From that year onward, a sharp decline in mortality rates was observed, followed by a rise beginning in 2021. Conclusion: The epidemiological and temporal analysis of malignant neoplasm of the stomach reveals an increasing trend in the number of deaths from this disease in Brazil. In addition to the significant underreporting of cases from 2020 to 2021—likely influenced in part by the COVID-19 pandemic—other contributing factors may also explain the subsequent abrupt rise in deaths, suggesting a multifactorial delayed impact. Therefore, urgent public health policies are essential to reverse this situation, including access to preventive measures and early diagnosis, especially in the most affected populations. This will contribute to improved quality of life and help prevent more severe outcomes related to the current disease burden.
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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