Thyroid cancer incidence in Canada: a national cancer registry analysis.

ABSTRACT:

Background

Thyroid cancer incidence rates are increasing in many developed countries while mortality rates remain stable. International evidence shows that the increase in incidence rates is mostly caused by overdiagnosis of small papillary cancers. We sought to describe how thyroid cancer incidence has changed and how it varies between provinces in Canada.

Methods

Data were obtained from the National Cancer Incidence Reporting System, causes of death tables and the Canadian Cancer Registry using the 1991 census population structure. We report thyroid cancer incidence by sex, age and province and mortality by sex from 1970 to 2012.

Results

Since 1970, age-standardized thyroid cancer incidence rates have increased in women from 3.9 to 23.4 per 100 000 and in men from 1

SUBMITTER: Topstad D 

PROVIDER: S-EPMC5621959 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature