Trends in prostate cancer incidence between 1996 and 2013 in two Swiss regions by age, grade, and T-stage.

The trends in prostate cancer incidence rates were similar in both regions, although on a higher level in Zurich compared to Ticino. However, the difference decreased over time. The distribution of T-stage and grade did not explain the difference in incidence rates. Different use of opportunistic screening may play a role.