Abstract
Oropharyngeal cancer (OPC) remains a significant health burden and about 15-30% of these have been attributed to the human papillomavirus (HPV). Human papillomavirus-related oropharyngeal cancer (HPV OPC) includes tumours which are detected to be p16INK4A positive or have the HPV DNA detected by in situ hybridisation or polymerase chain reaction. HPV OPC is generally believed to have a relatively good prognosis. More recently, there is a recognised pattern of atypical spread in a highly aggressive subset of HPV OPC. These are HPV OPCs which develop distant metastasis or recurrence. This review raises awareness of this subset of HPV OPC and factors associated with poor outcomes. A review of the literature available on HPV OPC was carried out. Studies were sourced from PubMed with searching of relevant headings and sub-headings and cross-referencing. Factors associated with highly aggressive HPV OPC include nodal stage and nodal morphology, alcohol and tobacco use, age and biological characteristics. Treatment options in cases of disease recurrence include salvage resection radiotherapy and/or chemotherapy and management options vary depending on the nature of recurrence and initial treatment. Recent updates in HPV OPC staging have made staging and treatment of tumours more accurate. While HPV OPC overall carries a relatively good prognosis, it is important for clinicians to be aware of potentially highly aggressive cases of HPV OPC and to be aware of factors that should prompt close monitoring.
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