[Synchronous ENT lymphoepitheliomas. Controversies on their diagnosis and treatment].

Lymphoepithelial carcinomas are characterized by proliferation of undifferentiated malignant epithelial cells together with an infiltrate of mature lymphocytes. They mainly appear in the nasopharynx but can also be encountered in other upper and lower aerodigestive sites such as oropharynx, stomach, trachea, and others. When they occur in the larynx they usually do so in the laryngeal ventricle and are characterized by protrusion of the laryngeal band, visible in laryngoscopy.