Update on cancer incidence trends in Canada, 1984 to 2017. / Le point sur les tendances de l'incidence du cancer au Canada (1984-2017).

Overall, cancer incidence is declining at a rate of −1.1% per year. In males, the two largest decreases were for prostate (−4.4% per year) and colorectal (−4.3% per year) cancer. In females, they were for thyroid (−5.4% per year) and colorectal (−3.4% per year) cancer. Melanoma (males: 2.2% per year; females: 2.0% per year) and multiple myeloma (males: 2.5% per year; females: 1.6% per year) rates are increasing. Cancer trends in Canada are dynamic and type-specific. The decreases for prostate and thyroid cancer underscore the importance of updating testing practices based on best evidence.