Locally advanced epithelial sinonasal tumors: The impact of multimodal approach

Objective Outcomes of locally advanced epithelial sinonasal cancers remain unsatisfactory; moreover, only limited and heterogeneous data exist on prognostic factors. Methods We reviewed all consecutive patients with American Joint Committee Cancer stage III to IV epithelial sinonasal cancers treated with platinum-based induction chemotherapy (IC) followed by locoregional treatment between 1996 and 2015. Results We identified 69 patients treated with a multimodal approach (IC, surgery, radiotherapy). Overall, 44 patients recurred (64%). Of those, 19 patients received salvage surgery, but only four remained disease-free. Median overall survival (OS) was 62.5 months. Sinonasal neuroendocrine and small cell histotypes (P = 0.0085), neuroendocrine differentiation (P = 0.006), and lack of response to IC (P = 0.03) were associated with worse OS. In patients who recurred, median OS was 13 months since recurrence. Survival was longer in patients submitted to salvage surgery (44%) than in those receiving chemotherapy alone at recurrence (29.5 vs. 4.6 months). Patients with a clinical benefit after palliative chemotherapy had a longer median OS than those with disease progression (29.2 vs. 4.4 months; P < 0.0001). Conclusion Globally, the prognosis of locally advanced epithelial sinonasal cancers is dismal, with worse outcomes for neuroendocrine lesions. In the recurrent setting, feasibility of salvage surgery and clinical benefit from palliative chemotherapy are associated with longer OS. A multimodal treatment strategy with IC seems to offer improved OS when compared with other retrospective series not employing such a therapeutic tool.