Study Status: Active, not recruiting
Recruit Status: Active, not recruiting
Study Type: Observational
Official Title: Etude de Concordance Entre la Technique OSNA et Les Techniques Classiques Pour la Recherche de métastases Ganglionnaires Des Cancers Des VADS
Brief Summary: The investigators main objective is to show that OSNA technique is as accurate as pathological analysis (frozen section / HE staining and immunochemistry) to detect occult lymph node metastasis (micro and macrometastasis).