OBJECTIVE: Although the majority of human papillomavirus (HPV)-positive oropharyngeal squamous cell carcinomas have a favorable prognosis, we search for markers of poor prognosis by carefully examining a subset of highly aggressive cases. STUDY DESIGN: Seven patients with HPV-positive oropharyngeal cancer who presented with non-pulmonary distant metastasis or developed distant metastasis posttreatment were identified. Eight control cases were chosen which responded well to treatment. Pathologic and radiologic studies were reviewed and compared. RESULTS: Two cases displayed a small cell carcinoma (SmCC) component upon pathologic review. Biomarker analysis revealed lower expression of NOTCH1 in the aggressive cohort in comparison to controls (P = .04). Cases showed a predominance of clustering of lymph nodes, extracapsular spread, and central tumor necrosis. CONCLUSION: Although most HPV-related oropharyngeal cancers display a positive prognosis, it is evident that there is a subset, which behaves more aggressively. This early investigation identifies pathologic and radiologic features that may help to predict this behavior.
OBJECTIVE: Although the majority of human papillomavirus (HPV)-positive oropharyngeal squamous cell carcinomas have a favorable prognosis, we search for markers of poor prognosis by carefully examining a subset of highly aggressive cases. STUDY DESIGN: Seven patients with HPV-positive oropharyngeal cancer who presented with non-pulmonary distant metastasis or developed distant metastasis posttreatment were identified. Eight control cases were chosen which responded well to treatment. Pathologic and radiologic studies were reviewed and compared. RESULTS: Two cases displayed a small cell carcinoma (SmCC) component upon pathologic review. Biomarker analysis revealed lower expression of NOTCH1 in the aggressive cohort in comparison to controls (P = .04). Cases showed a predominance of clustering of lymph nodes, extracapsular spread, and central tumor necrosis. CONCLUSION: Although most HPV-related oropharyngeal cancers display a positive prognosis, it is evident that there is a subset, which behaves more aggressively. This early investigation identifies pathologic and radiologic features that may help to predict this behavior.
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