[Thyroglossal duct cyst with laryngeal extension].

Thyroglossal cyst is frequently located in the thyrohyoid region. In rare cases, it breaches and remodeles anatomical structures of the larynx and manifests with dysphonia and laryngeal obstruction. A 60-year-old patient with a big thyroglossal duct cyst with laryngeal extension and cartilage erosion is described.