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  1. Hace 16 horas · 22,000 cases globally (2008) [1] [2] Human papillomavirus-positive oropharyngeal cancer ( HPV-positive OPC or HPV+OPC ), is a cancer ( squamous cell carcinoma) of the throat caused by the human papillomavirus type 16 virus (HPV16). In the past, cancer of the oropharynx (throat) was associated with the use of alcohol or tobacco or both, but the ...