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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]
The cyst wall is composed of squamous epithelium (90%), columnar cells with or without cilia, or a mixture of both, with lymphoid infiltrate, often with prominent germinal centers and few subcapsular lymph sinuses. The cyst is typically surrounded by lymphoid tissue that has attenuated or absent overlying epithelium due to inflammatory changes.
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
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
[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.
English: What is a thyroglossal duct cyst? Thyroglossal duct cysts are cysts in the neck that form as a result of the thyroglossal duct not closing. Sources: · Robbins Pathology 9th Edition · Langman’s Medical Embryology
Thyroglossal duct cyst; ... (simple sebaceous duct cyst, solitary ... eruptions are skin conditions of the palms and soles which are resistant to treatment. [34]