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| Characteristics of malignant tumor incidence and mortality in cancer registration areas of Sichuan Province in 2021 |
| CHENG Shuwen1, DONG Ting1, ZHANG Xin1, LI You1, JI Kui1, LI Yuanqiong2, YUAN Zhipei1
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1. Sichuan Provincial Center for Disease Control and Prevention, Chengdu, Sichuan 610041, China;
2. Ganzi Tibetan Autonomous Prefecture Center for Disease Control and Prevention, Ganzi, Sichuan 626000, China |
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Abstract Objective To investigate the characteristics of malignant tumor incidence and mortality in cancer registration areas of Sichuan Province in 2021. Methods Cancer registration data from 142 registries in Sichuan Province in 2021 were collected via the China Cancer Registry Platform. Crude incidence and crude mortality were calculated. The Chinese population-standardized incidence and world population-standardized incidence were standardized using the age structure of the standard population from the Fifth National Population Census in 2000 and Segi's world standard population. Descriptive analyses examined the distribution of rates by genders, urban/rural areas, and ages, and the ranking of leading cancer sites. Results In 2021, there were 248 600 new malignant tumor cases reported in Sichuan Province, with a crude incidence of 296.37/105. The Chinese population-standardized incidence and world population-standardized incidence were 164.67/105 and 160.47/105, respectively. There were 158 673 malignant tumor deaths, with a crude mortality of 189.16/105. The Chinese population-standardized mortality and world population-standardized mortality were 92.47/105 and 92.00/105, respectively. The Chinese population-standardized incidence and mortality in males were higher than in females (179.56/105 vs. 151.62/105, 125.09/105 vs. 60.35/105). The Chinese population-standardized incidence and mortality in urban areas were higher than in rural areas (175.74/105 vs. 157.54/105, 93.63/105 vs. 91.82/105). Both the crude incidence and crude mortality increased with age. The top ten malignant tumors by crude incidence were lung cancer, colorectal cancer, liver cancer, breast cancer, esophageal cancer, gastric cancer, cervical cancer, prostate cancer, thyroid cancer, and corpus uteri cancer, accounting for 76.33% of all new cases. The top ten by crude mortality were lung cancer, liver cancer, esophageal cancer, colorectal cancer, gastric cancer, breast cancer, pancreatic cancer, cervical cancer, prostate cancer, and brain tumors, accounting for 82.39% of all cancer deaths. Conclusions In registration areas of Sichuan Province, the incidence and mortality of malignant tumors are relatively low. Key populations such as males, urban residents, and the elderly require focused prevention and control efforts. Comprehensive measures should be prioritized for malignant tumors including lung cancer, liver cancer, esophageal cancer, gastric cancer, colorectal cancer, and breast cancer.
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Received: 22 August 2025
Revised: 18 September 2025
Published: 23 October 2025
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