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Therapeutic strategy for advanced stages salivary carcinomas of the tongue: A multicenter REFCOR study
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International audience. Locally-advanced stage Totalglossectomy
Materials and methods: This retrospective multicentric study, based on the French national network on rare head and neck cancers (REFCOR), included all patients with a T3-T4 salivary carcinoma of the tongue, diagnosed between January 2009 and December 2018. Results: In total, 47 patients were included, of which 44.7 % underwent surgery. Histologies were mostly adenoid cystic carcinomas (61.7 %), followed by other adenocarcinomas (27.7 %) and mucoepidermoid carcinomas (10.6 %). Median follow-up duration was 63.9 months. In multivariable analysis, surgery was significantly associated with better Recurrence-Free Survival (HR = 0.23, 95 %CI [0.09;0.55]) and Local/Regional Recurrence-Free Survival (HR = 0.31, 95 %CI [0.10;0.95]). The rate of distant metastasis at the end of follow-up was 61.9 % in the surgical group and 57.7 % in the non-surgical group. The Distant Metastasis Free Survival was 54.9 % [38.3;68.7], without statistical difference between both groups. There were similar rates of definitive gastrostomies but the rate of normal oral diet at the last follow-up seemed higher in the surgery group (38.1 % vs 15.4 %). Conclusion: Radical surgery in that population mainly aims to improve local/regional control, which may result in better long-term swallowing functions. About half of these tumors may be associated with occult distant metastasis at initial presentation. More studies are warranted to establish the role of postoperative RT and nonsurgical treatment with concurrent CRT.
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