Extranodal extension in laryngeal squamous cell carcinoma

Abstract

Objective: Although large retrospective database studies have associated extranodal extension (ENE) with worse survival in several head and neck cancers, the prognostic significance of ENE in laryngeal squamous cell carcinoma (LSCC) remains unclear. Our study examines ENE and overall survival (OS) in LSCC. Methods: The 2006–2017 National Cancer Database was queried for patients with LSCC undergoing surgical resection and neck dissection, with or without adjuvant therapy. Kaplan–Meier and multivariable Cox regression survival analyses were implemented to identify the independent impacts of pathologic nodal (pN) classification and ENE on OS. Results: Of 4208 patients satisfying inclusion criteria, 2343 (55.7%) were pN0/ENE-negative, 1059 (25.2%) were pN1-2/ENE-negative, and 806 (19.2%) were pN1-2/ENE-positive. The 5-year OS of pN0/ENE-negative, pN1-2/ENE-negative, and pN1-2/ENE-positive patients was 62.8%, 56.7%, and 32.9%, respectively (p