Demographic and Clinicopathologic Distribution of Oral Cavity and Oropharyngeal Cancer in Alberta, Canada: A Comparative Analysis.

The incidence of OPC in younger males was higher than that of OCC. Although incidence of OPC per 100 000 population increased over the 12-year study period, it remained largely unchanged for OCC. For both cancers, initial diagnoses were made at advanced stages, with almost twice as many stage IV OPC cases than OCC cases.