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Updated: Dec 27 2020

Thyroglossal Duct Cyst

Images
https://upload.medbullets.com/topic/109069/images/f1.large.jpg
https://upload.medbullets.com/topic/109069/images/tdc.jpg
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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