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Incidence of head and neck cancer in adolescents and young adults: a Danish nationwide study from 1978–2014

Head and neck cancer (HNC) is the sixth most frequent malignancy worldwide among adults [1,2]. However, HNC is infrequent in adolescents and young adults and HNC accounts for approximately 8% of cancers in patients aged 15–24 years [3,4]. Previous studies suggest an increase in the incidence of HNC in young adults [5,6], while information on trends in incidence in adolescents is limited. Further, studies of the general trend of HNC in a nationwide, populationbased setting are sparse. We present a nation-wide study addressing the trends in incidence of HNC in adolescents and young adults in Denmark throughout the last four decades.