Thyroid cancer incidence trend in Xihu district, Hangzhou, 2010−2020

  Objective  To describe the incidence of thyroid cancer in Xihu district, Hangzhou, Zhejiang province, from 2010 to 2020, analyze the trend of thyroid cancer incidence and provide evidence for the prevention and control of thyroid cancer.

  Methods  The tumor incidence data were obtained from the malignant tumor registration reporting system. After data cleaning, the incidence data of thyroid cancer with code C73 in ICD-10 and the corresponding population data were extracted. The crude incidence rate, age-specific incidence rate, Chinese standardized incidence rate and annual percent change (APC) of thyroid cancer were calculated respectively.

  Results  From 2010 to 2020, a total of 4 445 cases of thyroid cancer were reported in Xihu district (standardized incidence rate: 45.05/100 000), and the results of the Joinpoint regression test showed that the incidence rate of thyroid cancer showed a rapid increase between 2010 and 2020, with the average APC of 16.7% (95% CI: 10.3–23.5). The increase included two stages, with the APC of 104.1% (95% CI: 47.7−182.2) between 2010 and 2012 and 1.5% (95% CI: −2.0−5.2) between 2013 and 2020.

  Conclusion  The incidence of thyroid cancer increased rapidly and the cases tended to be younger in Xihu district of Hangzhou, to which close attention nedds to be paid.