Updated: 12/27/2020

Thyroglossal Duct Cyst

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https://upload.medbullets.com/topic/109069/images/thyroglossal_duct_cyst.jpg
Introduction
  • Embryological remnant of migratory path of thyroid from the tongue base   
    • due to arrested endodermal migration from the pharyngeal floor
    • usually located in the midline neck 
    • often close to hyoid bone
    • often go unnoticed until they get infected in association with an upper respiratory tract infection
      • histology of an infected cyst
        • follicular cells surrounding colloid admixed with a neutrophilic infiltrate
Presentation
  • Physical exam
    • palpation of midline mass  
    • moves with protrusion of the tongue and swallowing
Differential Diagnosis
  • Persistent cervical sinus (pharyngeal cleft cyst)
    • differentiating factor
      • lateral neck mass anterior to the sternocleidomastoid muscle
      • does not move with protrusion of the tongue and swallowing
Treatment
  • Surgical
    • excision of mass

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