Lymphoepithelial cysts of the vallecules are rare benign lesions, their incidence and prevalence are not well studied. The clinical picture in adults is usually asymptomatic, the positive diagnosis is made during an indirect or direct laryngoscopy of the larynx. paraclinical assessment is based on computed tomography or magnetic resonance imaging. The therapeutic management is surgical may be indicated in extreme urgency in the face of total obstruction of the airways. Left untreated, the progression may be to complications dominated by infection.