title: [Echography in the study of the velo-pharyngeal sphincter].
mesh_terms: D006801:Humans; D010614:Pharynx / Q000002:abnormalities*; D014463:Ultrasonography; D014681:Velopharyngeal Insufficiency / Q000175:diagnosis*
vernacular_title: L'échographie dans l'étude du sphincter vélo-pharyngien.