Abstract
Background: The purpose of this study was to elucidate the efficacy of concurrent chemotherapy and analyze prognostic factors in the radiation-based therapy for early stage laryngeal squamous cell carcinoma (ELSCC). Methods: The records of 97 patients with ELSCC treated by radiation-based therapy from 2004 to 2016 were retrospectively reviewed. Eighty-one patients were treated with the combined-agent regimens during the treatment. Of the 81 patients, 58 were treated with S-1 regimen and 23 with other regimens. Clinical factors, such as concurrent chemotherapy, non-glottic subsite and the incidence of second primary cancer (SPC) were analyzed for their association with survival. Results: From the analysis of all patients, the 5-year overall survival (OS) rates were found to be significantly poorer for patients with non-glottic cancer compared to those with glottic cancer (P Conclusions: Non-glottic subsite and SPC were associated with worsened survival. CCRT with S-1 can be a useful treatment option for stage II ELSCC.
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