primary laryngeal lymphangioma
Primary laryngeal lymphangioma is a rare, benign, congenital malformation of the lymphatic system characterized by a polypoidal, variable-sized, soft tissue mass located in the larynx. Most lesions manifest by the 2nd year of life and, depending on the size, patients may present with changes in voice, dysphagia, stridor, airway obstruction and/or respiratory distress. Cystic hygroma of the neck is frequently associated.