[Hypopharynx and larynx cancers: propositions for the selection and the delineation of peritumoral microscopic disease volumes (lymph nodes excluded)].

This article reviews the concept of selectivity in peritumoral microscopic disease to be included in the Clinical Target Volume (CTV) for elective treatment for larynx and hypopharynx squamous cell carcinoma (50 Gy or 54-60 Gy for SIB-IMRT), using the local tumoral spread. The objective of the present article is to present the different delineations of the target volumes, required for an appropriate application of 3-DCRT and IMRT (supraglottic larynx, vocal cord, subglottic larynx, pyriform sinus, lateral and posterior pharyngeal wall and postcricoid pharynx). These propositions are for the delineation of microscopic peritumoral target volumes when external beam irradiation is required. CTVs are illustrated on CT sections.