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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.
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
Long-standing infected thyroglossal duct cyst in a 29-year-old male patient. a Transverse greyscale ultrasound at midline, just above the level of the thyroid gland, shows an oval cystic lesion with internal echoes (white arrows) and posterior enhancement (arrowheads). b Transverse colour Doppler ultrasound shows surrounding peripheral flow ...
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]
It is located exactly mid-line, between the anterior 2/3 and posterior 1/3 of the tongue. The thyroid gland starts developing in the oropharynx in the fetus and descends to its final position taking a path through the tongue, hyoid bone and neck muscles. The connection between its original position and its final position is the thyroglossal duct.
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 ...
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The indications to do FNAC are: nodules more than 1 cm with two ultrasound criteria suggestive of malignancy, nodules of any size with extracapsular extension or lymph nodes enlargement with unknown source, any sizes of nodules with history of head and neck radiation, family history of thyroid carcinoma in two or more first degree relatives ...