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A thyroglossal cyst or thyroglossal duct cyst is a fibrous cyst that forms from a persistent thyroglossal duct. Thyroglossal cysts can be defined as an irregular neck mass or a lump which develops from cells and tissues left over after the formation of the thyroid gland during developmental stages.
Three-fourths of abnormalities within a persistent thyroglossal duct involve the formation of a cyst. [2] If a persistent thyroglossal duct becomes fluid filled it will form a thyroglossal duct cyst, which accounts for 70% of congenital neck masses and is the most likely diagnosis if the mass is along the midline of the neck. [3]
[6] [9] Surgical removal of the mass is the definitive treatment for ectopic thymus tissue that is causing symptoms. [4] It has been reported that the ectopic thymus tissue can transform into cancerous tissue. [4] However, due to most diagnosed ectopic thymus tissue being resected due to this concern, the natural progression is not well explored.
There are many different possible causes, [1] including head and neck cancer [2] and congenital conditions like branchial anomalies and thyroglossal duct cysts. [ 3 ] Diagnosis
The treatment is surgical excision. On histologic examination, the wall of the cyst includes thymic tissue, and may include parathyroid gland tissue because of the parathyroid gland's common embryonic origin with the thymus gland in the third pharyngeal pouch. Fewer than 100 cases of cervical thymic cysts have been reported in the medical ...
Papillary thyroid cancer (magnified at right) arising within ectopic thyroid tissue of a thyroglossal cyst is a rare occurrence (less than 1% of such cysts). [38] According to Surveillance, Epidemiology, and End Results (SEER), the incidence of papillary cancer has increased from 4.8 to 14.9 per 100,000 from 1975 to 2012. Females are more ...
Cutaneous columnar cysts are a cutaneous condition, a group of different cysts lined by columnar epithelium. [1]: 682 Types of cysts included in this group are: [1]: 682–3 Bronchogenic cyst; Branchial cyst; Thyroglossal duct cyst; Cutaneous ciliated cyst; Median raphe cyst
The thyroglossal duct is an embryological anatomical structure forming an open connection between the initial area of development of the thyroid gland and its final position. It is located exactly mid-line, between the anterior 2/3 and posterior 1/3 of the tongue .