Discussion and conclusion
Thyroglossal duct cyst is the most common congenital midline neck
swelling. It results from failure of obliteration of thyroglossal duct
which form a bridge between base of tongue and thyroid gland.
Thyroglossal Duct Cyst usually present as painless cystic mobile
fluctuant swelling in close proximity to hyoid bone [1, 2, 3] which
moves with deglutition and protrusion of tongue. In adults one fourth of
patients presented with draining sinus that result from spontaneous
drainage or surgical drainage of abscess [4].
Thyroglossal Duct Cyst results from failure of involution of
thyroglossal duct and present as midline cyst as fistula or sinus in
neck which should be properly investigated and diagnosed and should be
excised preferably by sistrunk procedure. Our study is small to reach
any conclusion but whenever you come across a midline neck
swelling,thyroglossal duct cyst should be ruled out. Clinical and
radiological findings were altered and limited due to history of neck
trauma.This case illustrates the need to consider thyroglossal duct cyst
in the differential diagnosis when working up a post-traumatic neck
swelling with discharge. A secondary educational objective in this case
is to be diligent to consider and rule out laryngeal fracture in the
case of a neck mass presenting after trauma as they can easily be missed
and present with many overlapping symptoms.