Journal
INTERNATIONAL JOURNAL OF CANCER
Volume 136, Issue 9, Pages 2187-2195Publisher
WILEY
DOI: 10.1002/ijc.29251
Keywords
incidence; joinpoint analysis; mortality; thyroid cancer; trends
Categories
Funding
- Italian Association for Cancer Research (AIRC) [10264]
- Swiss Leagues Against Cancer
- Swiss Foundation for Research Against Cancer (KFS) [2437-08-2009]
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In most areas of the world, thyroid cancer incidence has been appreciably increasing over the last few decades, whereas mortality has steadily declined. We updated global trends in thyroid cancer mortality and incidence using official mortality data from the World Health Organization (1970-2012) and incidence data from the Cancer Incidence in Five Continents (1960-2007). Male mortality declined in all the major countries considered, with annual percent changes around -2/-3% over the last decades. Only in the United States mortality declined up to the mid 1980s and increased thereafter. Similarly, in women mortality declined in most countries considered, with APCs around -2/-5% over the last decades, with the exception of the UK, the United States and Australia, where mortality has been declining up to the late 1980s/late 1990s to level off (or increase) thereafter. In 2008-2012, most countries had mortality rates (age-standardized, world population) between 0.20 and 0.40/100,000 men and 0.20 and 0.60/100,000 women, the highest rates being in Latvia, Hungary, the Republic of Moldova and Israel (over 0.40/100,000) for men and in Ecuador, Colombia and Israel (over 0.60/100,000) for women. In most countries, a steady increase in the incidence of thyroid cancer (mainly papillary carcinomas) was observed in both sexes. The declines in thyroid cancer mortality reflect both variations in risk factor exposure and changes in the diagnosis and treatment of the disease, while the increases in the incidence are likely due to the increase in the detection of this neoplasm over the last few decades. What's New? Trends in thyroid cancer incidence and mortality vary widely by country, but for most areas of the world, the data indicate an upward trend in incidence and a downward trend in mortality. Those trends are supported by the present analysis of thyroid cancer mortality and incidence globally. The analyses are based on data maintained by the World Health Organization (1970-2012) and Cancer Incidence in Five Continents (1960-2007). The authors attribute the rise in thyroid cancer incidence to increased detection of the disease and the decline in mortality to changes in diagnosis, treatment, and risk factor exposure.
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