Postoperative radiotherapy is associated with improved overall survival for alveolar ridge squamous cell carcinoma with adverse pathologic features.

Journal Article (Journal Article)

BACKGROUND: Alveolar ridge squamous cell carcinoma (ARSCC) is poorly represented in randomized trials. METHODS: Adults in the National Cancer Database diagnosed with ARSCC between 2010 and 2014 who should be considered for postoperative radiotherapy (PORT) based on National Comprehensive Cancer Network (NCCN)-defined risk factors were identified. RESULTS: Eight hundred forty-five (58%) of 1457 patients meeting the inclusion criteria received PORT. PORT was associated with improved overall survival (OS) on unadjusted (hazard ratio [HR] 0.83, 95% confidence interval [CI] 0.70-0.98, P = .02) and multivariable (HR 0.78, 95% CI 0.64-0.94, P = .002) analyses. PORT was associated with significantly improved 5-year OS for patients with 1 (68% vs 58%, P < .001), 2 (52% vs 31%, P < .001), and ≥3 (38% vs 24%, P < .001) NCCN-defined risk factors. Prognostic variables significantly associated with worse OS on multivariable analysis included advanced age, primary tumor size ≥3 cm, high grade, positive margin(s), stage N2-3, level IV/V nodal metastasis, and extranodal extension. CONCLUSION: PORT for resected ARSCC with adverse pathologic features is associated with significantly improved OS.

Full Text

Duke Authors

Cited Authors

  • Jacobs, CD; Williamson, H; Barak, I; Rocke, DJ; Kahmke, RR; Suneja, G; Mowery, YM

Published Date

  • January 2021

Published In

Volume / Issue

  • 43 / 1

Start / End Page

  • 203 - 211

PubMed ID

  • 32969107

Electronic International Standard Serial Number (EISSN)

  • 1097-0347

Digital Object Identifier (DOI)

  • 10.1002/hed.26475

Language

  • eng

Conference Location

  • United States