[Thyroglossal duct cyst with laryngeal extension]

Area of Science:

• Otolaryngology
• Medical Imaging
• Anatomical Pathology

Background:

• Thyroglossal duct cysts (TDCs) are common congenital anomalies typically found in the thyrohyoid region.
• While usually benign, TDCs can, in rare instances, grow significantly and impact adjacent structures.
• Laryngeal involvement by TDCs can lead to serious airway compromise.

Observation:

• A case report details a 60-year-old patient presenting with a large thyroglossal duct cyst.
• The cyst exhibited significant laryngeal extension, invading and remodeling laryngeal cartilages.
• Symptoms included dysphonia and signs of laryngeal obstruction.

Findings:

• Computed tomography (CT) provided clear visualization of the thyroglossal duct cyst.
• CT imaging demonstrated the cyst's extensive nature and its direct impact on laryngeal anatomy, including cartilage erosion.
• The findings underscore the potential for TDCs to cause substantial local destruction.

Implications:

• This case highlights the importance of advanced imaging like CT in diagnosing complex TDC presentations.
• Understanding the potential for laryngeal invasion is crucial for surgical planning and patient management.
• Rare but severe laryngeal complications from TDCs necessitate awareness among clinicians managing head and neck masses.