期刊
INTERNATIONAL JOURNAL OF CANCER
卷 147, 期 10, 页码 2764-2771出版社
WILEY
DOI: 10.1002/ijc.33055
关键词
cancer; HPV; trends; vagina; vulva
类别
资金
- Belgian Cancer Foundation (Brussels, BE)
- Directorate of Research and Innovation of the European Commission (RISCC grant)
Vulvar and vaginal cancers are relatively rare cancers, together responsible for less than 1% of the global cancer incidence among women in 2018. The majority of vaginal cancers and a lesser proportion of vulvar cancers are associated with HPV, with rising incidence rates of vulvar cancer observed in younger women, possibly due to an increased prevalence of high-risk HPV types. This report assesses recent international variations in the incidence rates of vulvar and vaginal cancer derived from high-quality data from population-based cancer registries in 68 countries, and further assesses time trends for selected longer-term series in eight countries (Australia, China, Colombia, India, Norway, Slovakia, the U.S., and the U.K.) over the period 1983 to 2012. We observed a 30-fold variation in the recorded incidence rates of vulvar cancer in contrast with the threefold variation for vaginal cancer. We also observed a rising incidence of vulvar cancer in Australia, Norway and the U.K., and Slovakia, with a more rapid rise in the rates seen in women aged < 60 years at diagnosis. The annual percentage change over the most recent decade varied from 1.7% in Norway to 4.1% in Slovakia. The increases are largely confined to younger women and are likely linked to generational changes in sexual behaviour (earlier age at sexual debut and increasing transmission of HPV among cohorts born 1940 to 1950 and thereafter. Vaginal cancer incidence rates, in contrast, were lower and more stable, despite the higher HPV-attributable fraction relative to vulvar cancer. Irrespective of the trends, an increasing number of women are predicted to be diagnosed worldwide with both cancer types in future decades as population ageing and growth continues. The promise of high-coverage HPV vaccination will likely counter this rising burden, but the impact may take a number of decades.
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