Objective: Randomized data comparing surgery to radiation for locally advanced oropharyngeal cancer (OPC) are lacking. This study evaluated practice patterns and overall survival outcomes from the National Cancer Database.
Methods: A total of 22,676 patients with stage III to IV, locally advanced OPC were treated between 2004 to 2013 with primary chemoradiation (CRT) or surgery with adjuvant radiotherapy with or without chemotherapy (aRT ± CT). Survival rates were estimated using the Kaplan-Meier method. Crude and adjusted hazard ratios (HR) were computed using Cox regression modeling.
Results: Median follow-up was 40.7 months; 8,555 and 14,121 patients received surgery with aRT ± CT and CRT, respectively. Corresponding 3-year survival was 85.4% and 72.6% (P < 0.0001). On multivariate analysis, adjusting for age, gender, race insurance status, median income, percentage with no high-school degree, Charlson-Deyo score, clinical tumor and node stage, tumor grade, facility type, treatment at > 1 facility, and human papillomavirus (HPV) status, surgery with aRT ± CT had a reduced hazard of death, HR, 0.79 (95% confidence interval 0.69-0.91), P = 0.001.
Conclusion: Primary surgery with aRT ± CT for locally advanced OPC has an improved survival compared to primary radiation-based treatment even when stratified by HPV status.
Level of evidence: 2c. Laryngoscope, 128:1353-1364, 2018.
Keywords: National Cancer Database; Oropharyngeal cancer; chemoradiation; human papillomavirus; radiotherapy.
© 2017 The American Laryngological, Rhinological and Otological Society, Inc.