Human Papillomavirus Type 16 Oropharyngeal Cancers in Lymph Nodes as a Marker of Metastases | Head and Neck Cancer | JAMA Otolaryngology–Head & Neck Surgery | JAMA Network
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Original Article
Sep 2011

Human Papillomavirus Type 16 Oropharyngeal Cancers in Lymph Nodes as a Marker of Metastases

Author Affiliations

Author Affiliations: Departments of Otolaryngology–Head and Neck Surgery (Drs Mirghani, Périé, and St Guily), Virology (Drs Moreau and Soussan and Ms Tam), and Pathology (Dr Lefèvre), Faculty of Medicine, University Pierre et Marie Curie Paris VI and Hospital Tenon Assistance Publique Hôpitaux de Paris, Paris, France.

Arch Otolaryngol Head Neck Surg. 2011;137(9):910-914. doi:10.1001/archoto.2011.141

Background Oropharyngeal squamous cell carcinomas (OSCCs) are associated with high-grade human papillomavirus (HPV) infection in 20% to 30% of cases. HPV-16 DNA has been detected in cervical lymph node metastases of HPV-16+ OSCC. However, the meaning of HPV-16 DNA detection in lymph nodes remains controversial. Does the presence of HPV-16 DNA in lymph nodes correlate with their metastatic involvement, or is it just a consequence of the filter function of lymph nodes?

Methods Viral load quantification using reverse transcriptase–polymerase chain reaction was retrospectively performed in primary tumors and in cervical lymph nodes, originating from levels IIa, IIb, and III, in 11 patients with HPV-16+ OSCC and in 3 control patients with HPV-16 OSCC.

Results A total of 45 lymph node levels were analyzed. HPV-16 DNA was not detected in HPV-16 OSCC lymph nodes. No statistically significant difference was found between primary tumors and metastatic lymph nodes viral load (P >> .01). The viral load value was significantly higher in metastatic lymph nodes than in tumor-free lymph nodes (P < .01). Among 27 tumor-free lymph node levels, the viral load value was undetectable in 16, low or medium (<105 copies per million cells) in 8, and high (>105 copies per million cells) in 3.

Conclusions HPV-16 DNA detection in lymph nodes of patients affected with HPV-16+ oropharyngeal cancer is indicative of metastatic involvement. Tumor-free lymph nodes with a high viral load value would suggest the presence of occult lymph nodes metastasis and the opportunity to use HPV-16 DNA as a metastatic marker. Further investigations are needed.