Trends in testicular cancer incidence in Vaud, Switzerland

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Abstract
Upward trends in testicular cancer incidence have been reported in Europe and North America, particularly for seminomas. We considered incidence data between 1974 and 1999 from the Swiss cancer registry of Vaud, i.e. one of the highest incidence areas on a worldwide scale, including a total of 731 cases. Testicular cancer incidence was around 8.5/100 000 between the mid-1970s and the late 1980s, and increased to around 10/100 000 in the 1990s. Corresponding figures at age 15–44 were around 16/100 000 between the mid-1970s and the late 1980s, and about 19/100 000 thereafter. No evidence of persisting upward trends was evident over the last few years. The rise in testicular cancer incidence in the 1990s was apparently restricted to seminomas, whose rates increased from about 4 to 5.7/100 000 at all ages, and from 7 to over 11/100 000 at age 15–44. No consistent pattern of trends was observed for malignant teratomas and for other and unspecified histotypes. Testicular cancer in Vaud has shown no tendency to further rising over the last decade, thus re-opening the issue of a probable asymptote of testicular cancer incidence in this population.