Mary Han1,2, Gaelen B Stanford-Moore1, Andrew R Larson1, David W Schoppy3, David M Cognetti4, Arjun S Joshi5, Jeffery J Houlton6, William R Ryan3. 1. Department of Otolaryngology, Head and Neck Surgery, University of California-San Francisco, San Francisco, California. 2. School of Medicine, University of California-San Francisco, San Francisco, California. 3. Division of Head and Neck Oncologic and Endocrine Surgery, Department of Otolaryngology-Head and Neck Surgery, University of California-San Francisco, San Francisco, California. 4. Division of Head and Neck Oncologic Surgery, Department of Otolaryngology-Head and Neck Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania. 5. Division of Head and Neck Oncologic Surgery, Department of Surgery, George Washington University, Washington, DC. 6. Division of Head and Neck Oncologic Surgery, Department of Otolaryngology-Head and Neck Surgery, University of Washington, Seattle, Washington, U.S.A.
Abstract
OBJECTIVE: Survival outcomes for human papillomavirus-associated oropharynx squamous cell carcinoma (HPV + OPSCC) treated with surgery alone are unclear. To increase understanding, we assessed overall survival (OS) outcomes using the national cancer database (NCDB). METHODS: We conducted a retrospective analysis of OS of 736 NCDB HPV + OPSCC patients who underwent surgery alone from 2010 to 2014 using univariate and multivariate analyses and the Kaplan-Meir method. RESULTS: Multivariable analysis found the following independent risk factors for death: American Joint Commission on Cancer (AJCC) 8th edition pathologic stage(p)N2 versus pN0 disease (hazard ratio [HR], 5.5; P = 0.000006), macroscopic extranodal extension (ENE) versus non-ENE (HR, 4.9; P < 0.02), a positive lymph nodes (LN) percentage of ≥10% (HR, 4.2; P = 0.0002), and five or more positive LNs (HR, 4.9; P = 0.00004). Three-year OS was significantly worse for AJCC 8th edition pN2 versus pN0 but not for 7th edition pN2 versus pN0 disease. Five-year OS was significantly worse for positive versus negative surgical margins, AJCC 8th edition stage II versus I, and either microscopic or macroscopic ENE versus non-ENE positive LNs. For 523 (71%) AJCC 8th edition stage I patients and for 283 (38%) patients who were pT1-T2, with negative margins, pN0-N1, with ≤4 pathologic LNs, without ENE, and with >20 LNs removed during neck dissection, the 3-year OS rates were 93% and 95%, respectively, and the 5-year OS rates were 91% and 95%, respectively. CONCLUSION: In the context of the lack of detail and possible inaccuracies found in the NCDB, surgery alone for AJCC 8th edition stage I HPV + OPSCC, particularly pT1-T2, pN0-N1 with ≤4 pathologic LNs, without ENE, and with negative surgical margins has a high OS. LEVEL OF EVIDENCE: 4 Laryngoscope, 130:E423-E435, 2020.
OBJECTIVE: Survival outcomes for human papillomavirus-associated oropharynx squamous cell carcinoma (HPV + OPSCC) treated with surgery alone are unclear. To increase understanding, we assessed overall survival (OS) outcomes using the national cancer database (NCDB). METHODS: We conducted a retrospective analysis of OS of 736 NCDB HPV + OPSCC patients who underwent surgery alone from 2010 to 2014 using univariate and multivariate analyses and the Kaplan-Meir method. RESULTS: Multivariable analysis found the following independent risk factors for death: American Joint Commission on Cancer (AJCC) 8th edition pathologic stage(p)N2 versus pN0 disease (hazard ratio [HR], 5.5; P = 0.000006), macroscopic extranodal extension (ENE) versus non-ENE (HR, 4.9; P < 0.02), a positive lymph nodes (LN) percentage of ≥10% (HR, 4.2; P = 0.0002), and five or more positive LNs (HR, 4.9; P = 0.00004). Three-year OS was significantly worse for AJCC 8th edition pN2 versus pN0 but not for 7th edition pN2 versus pN0 disease. Five-year OS was significantly worse for positive versus negative surgical margins, AJCC 8th edition stage II versus I, and either microscopic or macroscopic ENE versus non-ENE positive LNs. For 523 (71%) AJCC 8th edition stage I patients and for 283 (38%) patients who were pT1-T2, with negative margins, pN0-N1, with ≤4 pathologic LNs, without ENE, and with >20 LNs removed during neck dissection, the 3-year OS rates were 93% and 95%, respectively, and the 5-year OS rates were 91% and 95%, respectively. CONCLUSION: In the context of the lack of detail and possible inaccuracies found in the NCDB, surgery alone for AJCC 8th edition stage I HPV + OPSCC, particularly pT1-T2, pN0-N1 with ≤4 pathologic LNs, without ENE, and with negative surgical margins has a high OS. LEVEL OF EVIDENCE: 4 Laryngoscope, 130:E423-E435, 2020.
Keywords:
National Cancer Database; human papilloma virus; neck; neck dissection; oropharyngeal carcinoma; oropharynx; oropharynx cancer; overall survival; risk factors for death; surgery alone
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