Abstract
The treatment of head and neck squamous cell carcinoma (HNSCC) with N3 (>6cm) lymph nodes remains difficult, and the best treatment strategy has not been elucidated. The aim of this study was to evaluate the outcomes of various treatment modalities. Sixty-nine patients with HNSCC and N3 neck disease treated with definitive therapy in our institute between 1987 and 2013 were included in the analysis. We compared the clinical outcomes of radiotherapy (RT) alone, chemoradiotherapy (CRT) and surgery with or without induction chemotherapy (ICT). The overall survival (OS) at three years for the patients with N3 neck disease was 41%. The three-year OS rates of patients treated with definitive surgery and definitive CRT were 41% and 48%, respectively. There were no significant differences between these two treatments (P=0.82). The OS of patients who received ICT followed by definitive therapy was significantly better than that of patients who did not (P<0.001). The most common recurrence pattern was distant metastases. The rate of distant metastases was 61% of all treatment failures (20/33). The high rate of distant metastases in patients with N3 neck disease suggests that prevention of distant metastases can improve survival. Based on this study, we consider that ICT may play an important role in the treatment of N3 neck disease.
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