Benign Neoplasms Malignant Neoplasms Laryngoceles Evaginations of the mucous membrane of the laryngeal ventricle. Internal laryngoceles displace and enlarge the false vocal cords, resulting in hoarseness and airway obstruction. External laryngoceles extend through the thyrohyoid membrane, producing a mass in the neck. Laryngoceles, which are filled with air, can be expanded by the Valsalva maneuver and tend to occur in musicians who play wind instruments. They appear on CT as smooth, ovoid, low-density masses.
Treatment is excision.
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