Background: The prevalence of thyroid cancer has increased very rapidly in Korea. However, there is no data focusing on thyroid cancer mortality in Korea. In this study, we aimed to evaluate standardized thyroid cancer mortality using national data from Statistics Korea.
Methods: Population and mortality data from 1985 to 2015 were obtained from Statistics Korea. Age-standardized mortality rates (ASMR) of thyroid cancer per 100 000 were calculated according to the standard population of Korea, as well as World Health Organization (WHO) standard population and International Cancer Survival Standard (ICSS) population weights.
Results: The ASMRs of thyroid cancer was increased from 0.19 to 0.87 between 1985 and 2004. And the ASMRs were decreased from 2005 until 0.43 in 2015. The estimated annual percent change (APC) from 1985 to 2004 was 7.64 and corresponding value from 2004 to 2015 was −4.28. These changes in the ASMRs were similar patterns in males (APC 8.23, 19852003 and APC −4.33, 20032015) and females (APC 7.33, 19852004 and APC −4.63, 20042015). These patterns of the change of ASMR were also observed in elderly subgroup (≥55 years). When ASMRs were calculated based on the WHO standard population and ICSS population weights, those was similarly increased until 2004, and decreased from 2004.
Conclusion: Thyroid cancer mortality in Korea was increased until 2004 and started to decrease after then. The increase in early diagnosis of thyroid cancer might be associated with decrease of thyroid cancer mortality in Korea.
20 - 23 May 2017
European Society of Endocrinology