Treatment of Head and Neck Squamous cell carcinoma often combines chemoradiotherapy when organ has to be preserved or when surgery is not indicated. The loco-regional failure is about 30%. Then salvage surgery is the only chance for patients to survive but the overall survival rate is only 29% at 24 months. This prognostic is bad because of poor local control which is non-optimized by a complementary radiotherapy and negative exeresis margins.